CN110725277A - Anti-scouring ecological treatment method for river bank hydro-fluctuation belt - Google Patents
Anti-scouring ecological treatment method for river bank hydro-fluctuation belt Download PDFInfo
- Publication number
- CN110725277A CN110725277A CN201910699080.7A CN201910699080A CN110725277A CN 110725277 A CN110725277 A CN 110725277A CN 201910699080 A CN201910699080 A CN 201910699080A CN 110725277 A CN110725277 A CN 110725277A
- Authority
- CN
- China
- Prior art keywords
- slope
- net
- ecological
- binding
- mesh
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B3/00—Engineering works in connection with control or use of streams, rivers, coasts, or other marine sites; Sealings or joints for engineering works in general
- E02B3/04—Structures or apparatus for, or methods of, protecting banks, coasts, or harbours
- E02B3/12—Revetment of banks, dams, watercourses, or the like, e.g. the sea-floor
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G17/00—Cultivation of hops, vines, fruit trees, or like trees
- A01G17/005—Cultivation methods
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G22/00—Cultivation of specific crops or plants not otherwise provided for
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G22/00—Cultivation of specific crops or plants not otherwise provided for
- A01G22/60—Flowers; Ornamental plants
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B3/00—Engineering works in connection with control or use of streams, rivers, coasts, or other marine sites; Sealings or joints for engineering works in general
- E02B3/04—Structures or apparatus for, or methods of, protecting banks, coasts, or harbours
- E02B3/12—Revetment of banks, dams, watercourses, or the like, e.g. the sea-floor
- E02B3/122—Flexible prefabricated covering elements, e.g. mats, strips
- E02B3/127—Flexible prefabricated covering elements, e.g. mats, strips bags filled at the side
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Botany (AREA)
- Environmental Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Revetment (AREA)
Abstract
The invention discloses an anti-scour ecological treatment method for a river bank hydro-fluctuation belt, which comprises the following steps: s1. construction diversion; s2, excavating earth and stone; s3. constructing a gabion retaining wall; s4. constructing geotechnical stereo cells; s5. filling ecological vegetation bags in the cells; s6. piling up ecological vegetation bags on the gabion net; s7. watering on slope; s8. cover the geotextile. The method of the invention adopts a method of combining plants and engineering materials to realize the coordination of a river system with the activities of animals, plants, microorganisms and human beings, thereby achieving the purpose of ecological restoration of the bank slope; meanwhile, the bank slope stability is ensured and the anti-scouring purpose is achieved through the construction processes of plastic alloy steel geocell laying, ecological zone backfilling compaction, basalt fiber composite rib anchor rod and plant root system fixing, lead wire gabion retaining wall and the like; on the other hand, the ecological restoration method is reasonably configured in different water level areas on the basis of following the principles of combination of arbor, shrub and grass, species symbiotic fusion, combination of deep roots and shallow roots and the like, so that the aims of ecological restoration and landscape creation are fulfilled.
Description
Technical Field
The invention belongs to the technical field of ecological management, and particularly relates to an anti-scouring ecological management method for a river bank hydro-fluctuation belt.
Background
The riparian zone is an important ecological transition area for exchanging materials, energy and information between rivers and land ecosystems. The conventional river bank engineering slope protection mainly uses the technologies of mortar-masonry or dry-masonry block stone slope protection, reinforced concrete slope protection and the like. Considering that the river bank hydro-fluctuation belt is a corridor exchanged between a water ecosystem and an land ecosystem and has the functions of a buffer belt and a water filter, the influence of the traditional engineering treatment mode on the environment and the ecology of a treatment area is neglected, and the ecological environment is often worsened.
Secondly, the water level of the river bank falling zone changes violently, the geological environment problem is complex, the influence of high water level soaking and low water level exposure erosion causes the obvious change of the internal stress, physical and chemical properties of the rock soil of the bank slope, and the prominent geological disaster problems of bank slope collapse, landslide, water and soil loss and the like are caused. The existing ecological slope protection technology is only suitable for land bank slopes and is difficult to meet the complex environmental conditions of the hydro-fluctuation area.
Therefore, the river bank hydro-fluctuation belt is faced with the ecological environment problems of water and soil loss, land and water cross pollution, species diversity reduction and the like, so that the ecological system is degraded and the ecological landscape is destroyed, and the plant species in the traditional ecological slope protection technology cannot meet the special conditions of the water flooding time and the soil humidity of the river bank hydro-fluctuation belt.
Disclosure of Invention
The purpose of the invention is:
(1) aiming at the traditional bank engineering slope protection, the problems of ecological environment deterioration, poor landscape environment and the like caused by neglecting the influence of the environment and ecology of a treatment area are solved.
(2) Aiming at the problems that the existing ecological slope protection technology is only suitable for land bank slopes and is difficult to meet the complex environmental conditions of the hydro-fluctuation area, the technology ensures the stability of the bank slopes and meets the anti-scouring requirement by combining various construction processes.
(3) Aiming at the defect that plant varieties in the existing ecological slope protection technology are difficult to meet the growth environment of the hydro-fluctuation belt of the river bank, the technology can achieve the purposes of dry resistance, moisture resistance and flooding resistance by reasonably configuring plants in different water level areas and repairing the biological community.
In order to achieve the technical purpose, the technical scheme adopted by the invention is as follows:
an anti-scour ecological treatment method for river bank hydro-fluctuation belts comprises the following steps:
s1. arranging cofferdams along the flood bank according to the river terrain;
s2, excavating according to the designed excavation range and the slope of the side slope and the top-down process, so that the side slope forms the slope and the flatness required by the design;
s3. digging a foundation pit at the side slope and leveling; installing a gabion mesh in the excavated foundation pit, and installing a gabion mesh cover after filling stones in the gabion mesh;
s4., finishing the slope, hanging and paving plastic alloy steel geotechnical three-dimensional grid chambers, and arranging a drainage system;
s5. ecological vegetation bags filled with improved planting soil, flowers, grass, slow-release compound fertilizer and soil conditioner are filled in the geotechnical stereo grid;
s6., stacking ecological vegetation bags on the gabion mesh, and ensuring reliable anchoring connection between the ecological vegetation bags and the gabion mesh;
s7. spraying and sowing the slope with water to improve planting soil, flower, grass, slow-release compound fertilizer and soil conditioner;
s8. and covering the geotextile after the construction is finished.
Further, in step s1, the elevation of the weir crest of the cofferdam is 0.5m higher than the standard diversion flood water level; the cofferdam is a clay woven bag cofferdam and is impermeable by geotextile.
Further, in step s2, when the permanent side slope is excavated to be close to the design side slope, a protective layer with a thickness of 0.2-0.3 m is reserved according to the design side slope.
Further, the specific step of step s3 includes:
s31, accurately measuring and paying off, and then excavating a foundation pit, wherein the width of the pit bottom is ensured to reserve 1m as a reserved working pit at two sides of the gabion, and the foundation pit is excavated to a control elevation;
s32, when the gabion mesh box is installed, masonry between layers should be criss-cross and connected up and down, and 'through seams' are avoided; a T-shaped box body is arranged on each layer of gabion mesh box group; the spacing net and the net body are intersected at an angle of 90 degrees and bound to form a rectangular net box group or a net box; the binding wire is a steel wire made of the same material as the net wire; each binding is finished by tightly twisting twin-wire;
during binding, the joints of net sheets forming a net box group or a net box are bound, and the intersection angles of the partition net and the net body are bound together; binding the joint of the spacing net and the net body at intervals of 10 cm; adjacent frame lines between the spacing net and the net body are connected by adopting a combined line; when the net cage groups are connected and bound, the upper corner and the lower corner of each adjacent net cage group are bound together; binding upper and lower frame lines or folding lines of adjacent net box groups at intervals of 10 cm; binding 2 parts per square meter of mesh binding surfaces of adjacent mesh box groups, and binding the lower mesh boxes together to connect the mesh boxes into a whole;
s33, when the filler in the gabion mesh box is filled, the filler is uniformly fed into each cell on the same layer at the same time, and the single-cell mesh box cannot be fully filled at one time; in the filling construction, the feeding thickness of each layer is controlled to be below 30cm, the top surface filling stones are higher than the net cage properly, and small gravels are filled in gaps; the surface of the exposed filling stones is leveled by manual or mechanical building and piling, and the stones are mutually overlapped;
s34, constructing the gabion mesh cover on the basis that stones on the top are built and leveled; during construction, after each adjacent node is fixed by using a cover clamp, binding is performed; the gabion mesh cover and the net cage frame are crossed and bound one by one at intervals of 10 cm; after the construction of one layer of net cage is finished, the wall rear filler is timely filled to be level with the net cage, the surface of the same layer is necessarily on the same horizontal plane, and then one layer of net cage is stacked.
Further, the specific step of step s4 includes:
s41, removing pumice, dangerous stones, large granular soil blocks and disordered plants on the slope surface; leveling the slope surface by adopting a manual or mechanical slope repairing and tamping mode, and removing all impurities which are not beneficial to the laying of the plastic alloy steel geotechnical three-dimensional grid chamber; spreading a layer of high-quality soil to be flat so as to facilitate the growth of plants;
piling and compacting collapsed bank slopes by adopting ecological vegetation bags, and piling and leveling the slope surfaces by using the ecological vegetation bags according to a slope-leveling angle pull line, so as to level the slope surfaces to the design requirements;
s42, arranging a drainage system when the plastic alloy steel geotechnical three-dimensional grid chamber slope protection is paved, so that a slope top intercepting ditch, a transverse drainage ditch and a longitudinal drainage ditch are kept smooth;
s43, arranging an anchor rod according to the expansion size of the plastic alloy steel geotechnical three-dimensional grid chamber, wherein the anchor rod is made of basalt fiber composite ribs; the anchor rod positioned in the middle is fixed after the geocell is unfolded smoothly, so that the stress of the geocell is ensured to act on the anchor rod; the geocell is fully expanded to the designed expansion size by the anchor rod assembly and is pressed and fixed on the slope surface.
Further, in step s6, the reliability of the anchoring of the ecological vegetation bags and the gabion mesh and the reliability of the connection between the ecological vegetation bags should be ensured; ensuring that the ecological vegetation bags compact the footing parts of the geocell; the emergent aquatic plants should be transplanted at later stage.
The invention has the beneficial effects that: on the basis of meeting the requirements of stability and safety of the riverway side slope, the method of combining plants and engineering materials is adopted to realize coordination of a river system with activities of animals, plants, microorganisms and human beings, so that the aim of ecological restoration of the bank slope is fulfilled; meanwhile, the bank slope stability is ensured and the anti-scouring purpose is achieved through the construction processes of plastic alloy steel geocell laying, ecological zone backfilling compaction, basalt fiber composite rib anchor rod and plant root system fixing, lead wire gabion retaining wall and the like; on the other hand, the ecological restoration method is reasonably configured in different water level areas on the basis of following the principles of combination of arbor, shrub and grass, species symbiotic fusion, combination of deep roots and shallow roots and the like, so that the aims of ecological restoration and landscape creation are fulfilled.
Drawings
FIG. 1 is an elevation view of a river bank slope support of the present invention;
FIG. 2 is a cross-sectional view of the river bank slope support of the present invention;
FIG. 3 is a detailed structure diagram of the hanging net soil spraying of the present invention;
fig. 4 is a schematic structural view of a U-shaped anchor rod in the present invention;
FIG. 5 is a plant layout of the present invention;
fig. 6 is a cross-sectional view of a plastic alloy steel geocell of the present invention.
FIG. 7 is a schematic view of the connecting pin of the present invention;
fig. 8 is a schematic structural view of the stop cap of the present invention.
Detailed Description
The anti-scour ecological treatment method for the river bank hydro-fluctuation belt comprises the following steps:
s1. diversion for construction
The construction diversion mode adopts a dry period standard, a longitudinal cofferdam water retaining mode and a main riverbed diversion construction diversion mode; combining the current situation topography of the river channel, arranging cofferdams along the flood control dike along the river channel, and heightening the standard diversion flood water level by 0.5m at the top elevation of the weir; the cofferdam adopts a clay woven bag cofferdam and geotextile for seepage prevention.
S2. excavation of earth and stone
Before the river channel treatment is excavated, firstly, measuring and lofting an excavation side line, drawing an excavation plan and a section according to a design drawing and an actual section of an excavation part, then determining an opening boundary according to an excavation range or a slope gradient, and excavating according to a top-down process; when a permanent side slope is excavated, the side slope is trimmed by manually matching with a back shovel, when the permanent side slope approaches to a designed side slope, a protective layer with the thickness of 0.2-0.3 m is reserved according to the designed side slope, and the side slope is manually cut to the slope and the flatness required by the design.
s3. gabion retaining wall construction
S31, excavating and leveling foundation pit
And (3) excavating a foundation pit after accurately measuring and setting off the line, excavating and removing waste soil according to the set line by using a small excavator, wherein the width of the bottom of the pit is ensured to ensure that 1m can be added to each of the two wide sides after the gabion is installed to serve as a reserved working pit, and the foundation pit is excavated until the elevation control position is reached.
s32. gabion mesh installation
When the check box is installed, masonry between layers should be criss-cross and vertically connected, and a 'through seam' is strictly forbidden; a T-shaped box body is properly placed in each layer of check guest net box group; the spacing net and the net body are intersected at an angle of 90 degrees and bound to form a rectangular net box group or a net box; the binding wire is a steel wire made of the same material as the net wire; each tie must be doubled and twisted.
Binding and connecting the joints of various net sheets forming the net box group or the net cage, and binding the intersecting angles of the partition net and the net body together; binding the joint of the spacing net and the net body at intervals of 10 cm; adjacent frame wires between the spacing net and the net body need to be connected by adopting a combined wire, namely, a binding wire, a hole winding, a circle connection and a hole winding are connected in a spiral perforation twisting way by two circles; for the connection and binding of the net cage groups, the upper and lower four corners of adjacent net cage groups are respectively bound one by one; the upper and lower frame lines or fold lines of adjacent net box groups are bound together at intervals of 10 cm; the mesh joint surfaces of adjacent net box groups are bound at 2 positions per square meter, and the lower net boxes are bound together so as to be connected into a whole.
s33. bulk stone filling
When the filler in the gabion mesh box is constructed, the filler is uniformly fed into each cell on the same layer at the same time, and the single mesh box cannot be fully filled at one time by generally selecting artificial auxiliary filler; in the filling construction, the feeding thickness of each layer is controlled to be below 30cm, and generally, four layers of feeding are suitable for a net cage with one meter height; the top surface is filled with stones which are properly higher than the net cage, and the top surface is required to be compact, and gaps are filled with small broken stones; the exposed filling stones are leveled by manual or mechanical building and should be mutually overlapped.
s34. gabion mesh cover construction
The gabion sealing cover is required to be carried out on the basis that stone on the top is built and leveled, and places which are bent, deformed, uneven in surface and the like and do not meet the construction requirements are corrected; firstly, fixing adjacent nodes at each end by using a cover clamp, and then binding; the sealing cover and the net cage frame are crossed and bound one by one at intervals of 10 cm; after the construction of one layer of net cage is finished, the filler behind the wall is filled to be level with the net cage in time, the surface of the same layer is required to be on the same horizontal plane, and then one layer of net cage is built by a dish.
s4. construction of earthwork stereo lattice
S41. slope surface finishing
The slope flatness relates to the success or failure of the grass planting protection of the plastic alloy steel geotechnical three-dimensional grid chamber, and when the slope is uneven, stress concentration is easily generated when the geotechnical grid chamber is laid, so that local welding spots of the grid chamber are damaged, the slope of the plastic alloy steel geotechnical three-dimensional grid chamber collapses, and further slope protection engineering fails; therefore, when the slope surface is treated, pumice, dangerous stones, large-particle soil blocks, disordered plants and the like on the slope surface must be removed, the slope surface is leveled by adopting a manual or mechanical slope repairing and leveling (such as a vibrating plate) mode, all impurities which are not beneficial to the laying of the plastic alloy steel geotechnical three-dimensional grid room are removed, and besides the slope surface is kept flat and solid, a layer of high-quality soil is sprayed firstly to level, so that the growth of the plants is facilitated.
And (3) piling and compacting collapsed bank slopes by adopting ecological vegetation bags, preventing the collapse disasters of the bank slopes from further expanding, finishing the foundation during treatment, and piling and leveling the slopes by using the ecological vegetation bags according to a slope-laying angle pull line, wherein the slopes are required to be leveled to the design requirement.
s42 arrangement of drainage System
A drainage system (slope top intercepting ditches, transverse and longitudinal drainage ditches and the like are required to be kept smooth) is arranged when the plastic alloy steel geotechnical three-dimensional grid chamber slope protection is paved, rainwater is prevented from being poured into the grid chamber from the slope top to destroy the grid chamber, and water flow is prevented from directly scouring the slope surface of the plastic alloy steel geotechnical three-dimensional grid chamber slope protection.
S43. hanging and paving plastic alloy steel geotechnical stereo grid
Fixing each anchor rod according to the expansion size of the plastic alloy steel geotechnical three-dimensional grid chamber, wherein the anchor rods adopt basalt fiber composite bars, and the construction is implemented by noticing that the size of a construction drawing of a middle anchor rod and the size of a stress point of the geotechnical grid chamber drift due to uneven slope surface, so that the middle anchor rod is fixed after the geotechnical grid chamber is expanded smoothly, and the stress zone of the geotechnical grid chamber is ensured to act on the anchor rods); the geocell component is fully expanded to a designed expansion size and pressed and fixed on the slope surface by virtue of anchor rod components (a slope top main anchor rod, a middle main anchor rod, two side main anchor rods, a bottom anchor rod and an auxiliary anchor rod) which play roles of bearing, bearing and fixing.
In the embodiment, the model parameter of the plastic alloy steel geocell produced by adopting the modified plastic material is HJGTGLS-PM-H-A-T
HJGTGLS: alloy steel geotechnical stereo grid
PM: production of modified plastic materials
H: geocell height (150mm)
A: pitch, welding distance (440mm)
T: thickness (1.3mm ± 0.2);
in this embodiment, the performance of the adopted plastic alloy steel geocell is as follows:
aging resistance grade: the conservation rate of the tensile yield strength of the geocell sheet is I65%, II 75%, III 85% and IV 95% respectively according to national standard specification when the irradiation intensity is 550 w/square meter and the irradiation is 150 hours; the content of carbon black is 1.5-2%.
The retention rate of the tensile yield strength of the plastic alloy steel geocell is 97 percent, and the grade is judged as IV; the carbon black content was 1.7%. And (see the detection report of the institute of weight and measurement and detection in Chongqing city).
Heavy metal content mg/kg: not detected (no contamination).
Cell tensile strength: more than 25Mpa, and the elongation is less than 15 percent;
the grid size is 270mm multiplied by 270 mm;
the expansion area (the length and the width can be customized according to the field requirement).
In this embodiment, the type and performance of the special anchor rod are as follows:
the length of the anchor rod special for the geocell is selected according to the height of the geocell and the use occasion, and the engineering selects
(basalt fiber composite rib) and
(screw-thread steel processing, red lead primer and green finish treatment) anchor rod.
In this embodiment, the special connecting pins are used for connecting the geocell groups and the sheets.
In this embodiment, the special limiting cap is a geocell sheet, and the group limiting cap is a special limiting cap.
In this embodiment, the main mechanical index comparison and test performance of the adopted geocell are as follows:
the performance indexes of the plastic alloy steel geotechnical three-dimensional grid chamber are as follows:
s5. ecological vegetation bags filled in the cells
Embedding the ecological vegetation bags which are manufactured according to the size of the cells and are filled with planting soil, flowers and grass seeds into the cells and ensuring compaction; the bag is filled with materials for improving planting soil, flowers, grass, slow-release compound fertilizer, soil conditioner and the like. And transplanting shrubs. As shown in fig. 5, which is a schematic diagram of plant configuration, the following plants are used in this embodiment for ecological management: water flooding resistant arbor: birch, metasequoia, pond fir, Chinese ash, weeping willow, bamboo willow, etc.; 2. shrubs resistant to water flooding: mulberry, Chinese mosquitos, hemp, salix chebula, etc.; 3. herbal plants resistant to water flooding: bermuda grass, vetiver grass, giant reed rhizome, goosegrass herb and the like; 4. semi-submerged emergent aquatic flower plants: canna, Arundo donax, Typha angustifolia, Acorus calamus, Ecliptae herba, etc.; the reason for using the arrangement shown in fig. 5 is as follows:
1. the semi-submerged emergent aquatic flower plants are arranged above the water level line of the hydro-fluctuation zone which can be continuously and totally submerged by water for about 7 days, so that the water and soil loss can be prevented and treated, the variety of biodiversity species communities in the area can be increased, and the function of the ecological landscape of the area is improved.
2. The water-flooding resistant herbaceous plants are arranged in water level areas of the hydro-fluctuation belt which can be continuously and completely flooded by water for 30-300 days, and the water level areas are areas where trees and shrubs cannot live or areas where trees can live but cannot comprehensively prevent water and soil loss, so that the purposes that trees cannot finish water and soil loss prevention, bank fixation and bank protection and biological diversity quick restoration in the areas are relieved or compensated.
3. The tree which is resistant to water flooding is arranged in a water level section of a hydro-fluctuation belt which can be continuously and totally flooded by water for 30-200 days, the purpose is that the depth and the width of root systems of herbaceous plants and shrubs for soil stabilization and water erosion prevention are limited, the depth and the width of root systems of trees are not large, the trees are wide, namely developed, and the root systems of trees are not strong in soil stabilization and anti-scouring capacity.
4. Without the herbaceous and shrub configuration of trees, biodiversity cannot be fully satisfied. Because only herbs and shrubs or herbs or shrubs are available, bird inhabitation is not satisfactory and larger "amphibian" animals are difficult to favor.
5. The arbor, the shrub and the tree are horizontally or vertically arranged, so that the destroyed ecological environment of the area is quickly improved, a new world which is suitable for the ecological environment of the area is rebuilt through manual intervention, and the harmonious habitat between people and nature of the area is realized.
s6. ecological vegetation bags piled on gabion net
And (4) after the plastic alloy steel earthwork grid chamber is laid and the ecological vegetation bag is embedded in the grid chamber, carrying out construction of piling the ecological vegetation bag on the gabion net. In the process, attention is paid to 1) the reliability of anchoring the ecological vegetation bag and the gabion net and the reliability of connection between the bags, and the connection is guaranteed to be a whole; 2) ensuring that the ecological vegetation bags compact the footing parts of the geocell; 3) and transplanting emergent aquatic plants in a later period.
s7. slope watering
After the slope is watered thoroughly, the slope is sprayed with materials for improving planting soil, flowers, grass, slow-release compound fertilizer, soil conditioner and the like.
s8. geotextile
After construction, the geotextile is covered in time, and the effect is mainly as follows: 1) the direct irradiation of sunlight is reduced, so that the evaporation speed of water is reduced; 2) the surface is prevented from converging when raining, and the slope surface is washed; 3) the heat preservation and the moisture preservation are beneficial to the growth of plants.
Finally, the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all of them should be covered in the claims of the present invention.
Claims (6)
1. An anti-scour ecological treatment method for river bank hydro-fluctuation belts is characterized by comprising the following steps:
s1. arranging cofferdams along the flood bank according to the river terrain;
s2, excavating according to the designed excavation range and the slope of the side slope and the top-down process, so that the side slope forms the slope and the flatness required by the design;
s3. digging a foundation pit at the side slope and leveling; installing a gabion mesh in the excavated foundation pit, and installing a gabion mesh cover after filling stones in the gabion mesh;
s4., finishing the slope, hanging and paving plastic alloy steel geotechnical three-dimensional grid chambers, and arranging a drainage system;
s5. ecological vegetation bags filled with improved planting soil, flowers, grass, slow-release compound fertilizer and soil conditioner are filled in the geotechnical stereo grid;
s6., stacking ecological vegetation bags on the gabion mesh, and ensuring reliable anchoring connection between the ecological vegetation bags and the gabion mesh;
s7. spraying and sowing the slope with water to improve planting soil, flower, grass, slow-release compound fertilizer and soil conditioner;
s8. and covering the geotextile after the construction is finished.
2. The ecological management method for the scour-resistant river bank hydro-fluctuation belt according to claim 1, which is characterized in that: in step s1, the elevation of the weir crest of the cofferdam is 0.5m higher than the standard diversion flood water level; the cofferdam is a clay woven bag cofferdam and is impermeable by geotextile.
3. The ecological management method for the scour-resistant river bank hydro-fluctuation belt according to claim 1, wherein in the step s2, when the permanent side slope is excavated to be close to the designed side slope, a protective layer with the thickness of 0.2-0.3 m is reserved according to the designed side slope.
4. The ecological management method for the scour-resistant river bank hydro-fluctuation belt according to claim 1, which is characterized in that: the specific steps of step s3 include:
s31, accurately measuring and paying off, and then excavating a foundation pit, wherein the width of the pit bottom is ensured to reserve 1m as a reserved working pit at two sides of the gabion, and the foundation pit is excavated to a control elevation;
s32, when the gabion mesh box is installed, masonry between layers should be criss-cross and connected up and down, and 'through seams' are avoided; a T-shaped box body is arranged on each layer of gabion mesh box group; the spacing net and the net body are intersected at an angle of 90 degrees and bound to form a rectangular net box group or a net box; the binding wire is a steel wire made of the same material as the net wire; each binding is finished by tightly twisting twin-wire;
during binding, the joints of net sheets forming a net box group or a net box are bound, and the intersection angles of the partition net and the net body are bound together; binding the joint of the spacing net and the net body at intervals of 10 cm; adjacent frame lines between the spacing net and the net body are connected by adopting a combined line; when the net cage groups are connected and bound, the upper corner and the lower corner of each adjacent net cage group are bound together; binding upper and lower frame lines or folding lines of adjacent net box groups at intervals of 10 cm; binding 2 parts per square meter of mesh binding surfaces of adjacent mesh box groups, and binding the lower mesh boxes together to connect the mesh boxes into a whole;
s33, when the filler in the gabion mesh box is filled, the filler is uniformly fed into each cell on the same layer at the same time, and the single-cell mesh box cannot be fully filled at one time; in the filling construction, the feeding thickness of each layer is controlled to be below 30cm, the top surface filling stones are higher than the net cage properly, and small gravels are filled in gaps; the surface of the exposed filling stones is leveled by manual or mechanical building and piling, and the stones are mutually overlapped;
s34, constructing the gabion mesh cover on the basis that stones on the top are built and leveled; during construction, after each adjacent node is fixed by using a cover clamp, binding is performed; the gabion mesh cover and the net cage frame are crossed and bound one by one at intervals of 10 cm; after the construction of one layer of net cage is finished, the wall rear filler is timely filled to be level with the net cage, the surface of the same layer is necessarily on the same horizontal plane, and then one layer of net cage is stacked.
5. The ecological management method for the scour-resistant river bank hydro-fluctuation belt according to claim 1, which is characterized in that: the specific steps of step s4 include:
s41, removing pumice, dangerous stones, large granular soil blocks and disordered plants on the slope surface; leveling the slope surface by adopting a manual or mechanical slope repairing and tamping mode, and removing all impurities which are not beneficial to the laying of the plastic alloy steel geotechnical three-dimensional grid chamber; spreading a layer of high-quality soil to be flat so as to facilitate the growth of plants;
piling and compacting collapsed bank slopes by adopting ecological vegetation bags, and piling and leveling the slope surfaces by using the ecological vegetation bags according to a slope-leveling angle pull line, so as to level the slope surfaces to the design requirements;
s42, arranging a drainage system when the plastic alloy steel geotechnical three-dimensional grid chamber slope protection is paved, so that a slope top intercepting ditch, a transverse drainage ditch and a longitudinal drainage ditch are kept smooth;
s43, arranging an anchor rod according to the expansion size of the plastic alloy steel geotechnical three-dimensional grid chamber, wherein the anchor rod is made of basalt fiber composite ribs; the anchor rod positioned in the middle is fixed after the geocell is unfolded smoothly, so that the stress of the geocell is ensured to act on the anchor rod; the geocell is fully expanded to the designed expansion size by the anchor rod assembly and is pressed and fixed on the slope surface.
6. The ecological management method for the scour-resistant river bank hydro-fluctuation belt according to claim 1, which is characterized in that: in step s6, ensuring the anchoring reliability of the ecological vegetation bags and the gabion mesh and the connection reliability of the ecological vegetation bags; ensuring that the ecological vegetation bags compact the footing parts of the geocell; the emergent aquatic plants should be transplanted at later stage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910699080.7A CN110725277A (en) | 2019-07-31 | 2019-07-31 | Anti-scouring ecological treatment method for river bank hydro-fluctuation belt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910699080.7A CN110725277A (en) | 2019-07-31 | 2019-07-31 | Anti-scouring ecological treatment method for river bank hydro-fluctuation belt |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110725277A true CN110725277A (en) | 2020-01-24 |
Family
ID=69217725
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910699080.7A Pending CN110725277A (en) | 2019-07-31 | 2019-07-31 | Anti-scouring ecological treatment method for river bank hydro-fluctuation belt |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110725277A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111851399A (en) * | 2020-08-11 | 2020-10-30 | 河北冀水规划设计有限公司 | Sand river bed water and soil loss prevention and control and water quality purification system |
| CN112544350A (en) * | 2020-11-30 | 2021-03-26 | 中建五局第三建设有限公司 | Construction method for protecting side slope of ecological grass planting roadbed in geocell |
| CN117888499A (en) * | 2024-03-13 | 2024-04-16 | 武汉市城市防洪勘测设计院有限公司 | Ecological restoration system for river bank zone and construction method thereof |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009019500A1 (en) * | 2007-08-06 | 2009-02-12 | Hesco Bastion Limited | Gabions |
| CN102704441A (en) * | 2012-05-30 | 2012-10-03 | 中水东北勘测设计研究有限责任公司 | Arrangement method of ecological gabion chamber revetment type |
| CN103898870A (en) * | 2014-03-18 | 2014-07-02 | 北京工业大学 | Gabion box ecological gabion river channel slope protection construction method |
| CN104328766A (en) * | 2014-10-31 | 2015-02-04 | 杭州市市政工程集团有限公司 | Ecological stone cage net box retaining wall and construction method |
| CN104358266A (en) * | 2014-12-08 | 2015-02-18 | 北京东方园林股份有限公司 | Method for repairing geocells and side slopes |
| CN106884412A (en) * | 2017-04-14 | 2017-06-23 | 北京群祥兴新材料科技股份有限公司 | A kind of self-purification waterbody ecology soft structure bank protection and its construction |
| CN207260089U (en) * | 2017-10-09 | 2018-04-20 | 杨勇 | A kind of honeycomb cell compartment type is used for dykes and dams ecological management and rainwater purification system |
-
2019
- 2019-07-31 CN CN201910699080.7A patent/CN110725277A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009019500A1 (en) * | 2007-08-06 | 2009-02-12 | Hesco Bastion Limited | Gabions |
| CN102704441A (en) * | 2012-05-30 | 2012-10-03 | 中水东北勘测设计研究有限责任公司 | Arrangement method of ecological gabion chamber revetment type |
| CN103898870A (en) * | 2014-03-18 | 2014-07-02 | 北京工业大学 | Gabion box ecological gabion river channel slope protection construction method |
| CN104328766A (en) * | 2014-10-31 | 2015-02-04 | 杭州市市政工程集团有限公司 | Ecological stone cage net box retaining wall and construction method |
| CN104358266A (en) * | 2014-12-08 | 2015-02-18 | 北京东方园林股份有限公司 | Method for repairing geocells and side slopes |
| CN106884412A (en) * | 2017-04-14 | 2017-06-23 | 北京群祥兴新材料科技股份有限公司 | A kind of self-purification waterbody ecology soft structure bank protection and its construction |
| CN207260089U (en) * | 2017-10-09 | 2018-04-20 | 杨勇 | A kind of honeycomb cell compartment type is used for dykes and dams ecological management and rainwater purification system |
Non-Patent Citations (6)
| Title |
|---|
| 中国市政工程协会: "《中国市政工程海绵城市建设实用技术手册》", 30 June 2017 * |
| 周大纲等: "《土工合成材料制造技术及性能》", 31 March 2001 * |
| 朱杰兵等: "《山区高速公路边坡施工安全监控实践》", 31 December 2016 * |
| 王旭旭: "库滨消落带污染调查及治理对策", 《东北水利水电》 * |
| 王正春等: "《重庆三峡水库消落区生态治理及苗木繁育技术研究》", 30 September 2016 * |
| 王祥荣等: "《长江三峡库区（重庆段）沿江景观生态研究》", 31 July 2006 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111851399A (en) * | 2020-08-11 | 2020-10-30 | 河北冀水规划设计有限公司 | Sand river bed water and soil loss prevention and control and water quality purification system |
| CN112544350A (en) * | 2020-11-30 | 2021-03-26 | 中建五局第三建设有限公司 | Construction method for protecting side slope of ecological grass planting roadbed in geocell |
| CN117888499A (en) * | 2024-03-13 | 2024-04-16 | 武汉市城市防洪勘测设计院有限公司 | Ecological restoration system for river bank zone and construction method thereof |
| CN117888499B (en) * | 2024-03-13 | 2024-06-07 | 武汉市城市防洪勘测设计院有限公司 | Ecological restoration system for river bank zone and construction method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103898870B (en) | A kind of gabion net Ecotypic Stone Mesh-box river course slope protection construction method | |
| KR100917790B1 (en) | Grid type hollow block for ecological restoration of bank and construction method of bank using thereof | |
| KR100920027B1 (en) | Vegetation Method Reinforced Soil Slopes with Geotextile Curtain Wall combined with steel buckel and anchor Nails | |
| CN101580305B (en) | Wetland governance method for improving ecological environmental in reservoir falling zone | |
| CN105756073B (en) | A kind of ion type rareearth mine ecological slope protection building block and its ecological revetment system | |
| CN104612107A (en) | River channel reinforced gabion and water-permeable geotextile composite ecological slope protection retaining wall construction method | |
| CN110725277A (en) | Anti-scouring ecological treatment method for river bank hydro-fluctuation belt | |
| CN110306491A (en) | A kind of river channel ecology bank protection construction technique | |
| CN103362135B (en) | Fang Beng hilllock, protect water and soil net grass bank protection | |
| CN114182686B (en) | Log frame and recycled concrete combined structure ecological slope protection and construction method thereof | |
| CN210031857U (en) | Ecological embankment side slope structure | |
| CN207959233U (en) | Ecological grid structures | |
| CN108166520B (en) | Water and soil conservation method for electric power transmission line engineering construction | |
| CN108411856B (en) | Ecological restoration structure and method for river waste residue bank slope | |
| RU2582814C1 (en) | Method for construction of landslide protection structure of biopositive | |
| CN113089695B (en) | Landslide body side slope ecological restoration structure and method | |
| CN205653751U (en) | Modular ecological embankment | |
| CN105926645A (en) | Ecological restoration method for construction refuse landfill | |
| CN215252656U (en) | Be used for prosthetic green slope protection structure of planting of geological disasters | |
| CN109577276A (en) | Ecological protection structure suitable for rocky bank slope in reservoir hydro-fluctuation area and construction method of ecological protection structure | |
| KR102261999B1 (en) | Construction Method for Drainage and Slope Restoration Using Eco-friendly Earth Pouch Wire Net Kit | |
| CN214993495U (en) | Slope type ecological sea wall structure assembled with grid net | |
| CN211037008U (en) | Comprehensive treatment system for slope slag-adhering under plateau area road | |
| CN111321700B (en) | Overflowing energy dissipation type ecological bank protection method for anti-scouring and anti-landslide barrier plugs | |
| CN114635432A (en) | Construction method of composite ecological slope protection of foundation pit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20200124 |
|
| RJ01 | Rejection of invention patent application after publication |