JP3429422B2 - Flexible seawall and greening method - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a flexible revetment material for vegetation revetment for shores of rivers, lakes, regulating ponds (for example, slopes of dams, low water level of rivers, etc.). It relates to the greening construction method used.

[0002]

2. Description of the Related Art As a revetment method for rivers, lakes and marshes, a stone-clad construction method, a concrete-clad block construction method,
Many construction methods have been used, such as the frame construction method, the block mat construction method, the cloth formwork mortar injection construction method, and the gabion construction method.
However, due to the excessive importance of safety against floods and easiness of maintenance, it may result in damage to the natural environment such as rivers, lakes and marshes, which is typical of rivers and lakes. Has become.

For this reason, in recent years, in addition to protecting and protecting slopes, active greening at the water's edge by vegetation creates a habitat environment for aquatic plants and animals and a multi-natural waterway with a water purification function. Various attempts have been made to construct revetments. One of the typical construction methods is a flexible revetment made by packing palm fibers in a nylon bag at a high density inside a river,
Laying on the shore of lakes, regulating ponds, etc., and using this as a growth base for aquatic plants, plants that have been grown sufficiently in the field are planted on the flexible revetment material, thereby making the waterside green and This is a greening method that restores and restores the ecosystem.

[0004]

The above-mentioned conventional greening method requires a great deal of time and labor for the maintenance and transportation of the plant to be planted, and at the construction site, the plant is planted on the flexible revetment material. Therefore, the workability is poor. Moreover, since it is a flexible revetment material in which a tubular bag body is filled with coconut fiber, it has a small specific gravity, and it is difficult to fix the flexible revetment material at the riverbank of rapids or sandy soil. It is necessary to use it in combination with a stone net-filled revetment material that is a nylon net filled with stones, and two types of revetment material are prepared and combined, which makes construction extremely troublesome. Further, when the flexible revetment material planted with plants and the revetment material in the form of a snake basket are alternately laid, there is no vegetation in the revetment material in the form of a snake basket, resulting in striped greening,
It will give an unnatural impression.

[0005]

The present invention has been made in view of such circumstances, and it is laid in rivers, lakes and marshes, regulating ponds, etc. to cover and protect them, and at the same time, active greening at the waterside by vegetation is carried out.
Flexible revetment materials that can efficiently construct multi-natural waterways and revetments that create aquatic fauna and habitat environment and water quality purification functions, and have good followability to ground changes, and greening using these The purpose is to provide a construction method.

[0007]

The present invention comprises means for solving the above-mentioned problems as follows. That is, in the invention of the flexible revetment material according to claim 1, in the stone,
Diameter 10 obtained by filling a mixture of soil for plant growth with at least one of plant seeds, foliage and root stock
-30 cm long, 1.0 m to 3.0 m long, using a grid-shaped reinforcing band made of fibers with high tensile strength and high durability, and a fabric woven between the reinforcing bands. It is characterized in that two or more flexible tubular bags are connected in the longitudinal direction.

In the invention of the flexible revetment material according to claim 2, a mixture of stone, soil for growing plants, and at least one of plant seeds, foliage and root stocks has a diameter of 10 to 30c.
m, a length of 1.0 m to 3.0 m, a lattice-shaped reinforcing band made of fibers having high tensile strength and high durability, and a cloth woven between the reinforcing bands. After filling the inside of a flexible tubular bag for a certain period, the filled and unfilled parts
The boundary is closed with a fastening member, and similarly, the mixture is intermittently and repeatedly filled, and a plurality of filling portions are connected in the longitudinal direction.

The invention according to claim 3 is characterized in that the flexible revetment material according to claim 1 or 2 is laid on the shore of a river, a lake, a regulating pond or the like.

A fourth aspect of the present invention is a flexible revetment material laid on the bottom of a river, the flexible revetment material being laid on the bottom of the river, in which stones are filled. A flexible tubular bag body having a diameter of 10 to 30 cm, a length of 1.0 m to 3.0 m, and a lattice-shaped reinforcing band composed of fibers having high tensile strength and high durability. The invention according to claim 5 is a flexible revetment material laid on the riverbed of a river, wherein two or more pieces are connected in the longitudinal direction, and stones are provided inside a flexible tubular bag body. After section filling, the boundary between the filled and unfilled parts is closed with a fastening member, and further, stones, soil for plant growth, plant seeds, foliage, and a mixture of at least one kind of roots are intermittently mixed. The filling is repeated, and a plurality of filling portions are connected in the longitudinal direction.

Since the tubular bag body is flexible and is divided into small blocks and connected, a change in the ground after laying,
For example, it has good followability to uneven settlement, erosion, etc., is not divided, and is excellent in river disaster prevention.

[0012] Further, during construction, since unevenness in the ground to be constructed is well followed, uneven correction of the ground to be constructed may be slight, and construction workability is excellent.

Crushed stone and gravel are used as stones to be filled in the tubular bag body of the flexible revetment material. As the soil for growing plants, bark compost, artificial soil such as peat moss, horticultural soil made from incinerated ash, on-site soil, and mixtures of these with water purification agents such as fertilizers and activated carbon are arbitrarily selected. Then used.

As the plant seed, for example, Kentucky 31 fescue, Bermudagrass, reed canary grass, weasel or the like is used, and as the foliage or the root stock, there is used Seri, reed, weasel, willow or the like.

[0015]

[0016]

[0017]

[0018]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. Figure 1 is a perspective view of a flexible seawall,
The flexible revetment material 1 has a particle diameter of 20 inside the tubular bag body 2.
~ 70mm stone (crushed stone, gravel, etc.) and bark compost,
Artificial soil such as peat moss, horticultural soil made from incinerated ash, etc., soil generated at the site, and a mixture of these with a water purification material such as fertilizer or activated carbon for plant cultivation to be used appropriately It is a mixture of soil and a mixture 3 of plant seeds, foliage and roots.

The above-mentioned "plant seed, foliage, root stock" means
These three types may be used, of which one type or two types may be used. Examples of the plant seeds include Kentucky 31 fescue, Bermudagrass,
Reed canary grass, weasel, etc. are used, and as stems and leaves or roots, there are
Willow etc. are used.

Such a flexible revetment 1 is used for rivers, lakes,
Laying on the shore of a regulating pond, etc., while covering and protecting the slope, using the soil for plant growth as a medium, plant seeds, foliage, roots are germinated and rooted, and by growing, the vegetation By proactively greening, it is possible to construct a multi-natural water channel / bank with good construction, which creates a habitat for aquatic plants and animals and has a water purification function. The composition of the mixture 3 to be filled in the tubular bag 2 is set at the installation site, river water level,
It may be arbitrarily adjusted according to the weather conditions.

In the above-mentioned tubular bag body 2, for example, a lattice-like reinforcing band composed of fibers having high tensile strength and high durability, and woven in a fine mesh between the reinforcing band, It is preferable to use a fabric in which only the reinforcing band remains due to corrosion or dissolution over time.
It is possible to use a cloth that is interlaced in a comb-like shape that is relatively proof and does not interfere with the growth of plants by causing suitable misalignment, and other materials may be used depending on the construction conditions. It may be appropriately selected.

The cylindrical bag 2 has a diameter of 10 to 3
The length is 0 cm and the length is about 1.0 to 3.0 m, and the end portions of the respective tubular bags 2 are connected to each other by the connecting member 4. The connecting member 4 includes an eye fitting 41 fixed to an end of each tubular bag 2, a U-shaped bolt 42, a washer 43, and a nut 44.
It can be easily attached and detached at the time of on-site construction, but the eye fittings 41, 41 may be connected to each other with an appropriate string, wire, or the like, and may be devised appropriately according to the usage conditions and the like. .

FIG. 2 shows a different embodiment of the flexible revetment material. After filling the above-mentioned fillers into the tubular bag body 2 for a predetermined section , the boundary between the filled portion 22 and the unfilled portion 21 is fastened. It is closed by a member 7, and is similarly intermittently and repeatedly filled with a mixture 3, and a plurality of filling portions 22, ... Are connected in the longitudinal direction.

The fastening member 7 may be formed, for example, by forming bolt holes at both ends of a U-shaped sheet metal material and fastening them with bolts and nuts. Alternatively, a string or wire may be inserted through the bolt holes. The unfilled portion 21 may be fastened with a cord or a wire, and may be appropriately devised in accordance with construction conditions and the like.

As described above, when the flexible revetment material 1 continuously formed in the longitudinal direction is laid on the shore of a river, lake, pond or the like (see FIGS. 3 and 4), as described above. , The ground (slope) 5 has a very good followability, the construction work is easy, and the correction of the unevenness of the construction target ground is extremely small, and the construction workability at the site is excellent. Further, the flexible revetment material 1 can be arranged in various decorative patterns (see FIG. 5). In addition, as shown in FIG. 3, when arranging on the river bottom 6, the vegetation base material is not included in the tubular bag body 2, and the arrangement direction is the same as the river flow even in the direction along the river flow. The directions may be orthogonal to each other.

FIG. 6 shows an example of the case where a wand portion 8 and a low water channel portion 9 which are entangled in a river or the like are constructed. In the wand portion 8, a flexible revetment material 1 is attached to a water shoreline 10 which is complicatedly entered. , ... can be arranged flexibly, and in the low water channel portion 9, the flexible revetment materials 1, ... Are arranged in an arc shape so as to continuously project from the watershore line 10, and It is also possible to effectively prevent erosion and runoff of the low water channel portion 9.

The constructed flexible revetment material 1 is stably settled on the ground 5 due to the weight of stones, and has good fixing ability even in a place having a water flow or a bank of sandy soil, but it is necessary. Depending on the situation, pegs and anchors may be placed.

In addition to the fact that the tubular bag body 2 itself is flexible and the tubular bag bodies 2 and 2 are deformable with each other, various grounds 5 after laying can be obtained. Changes (uneven ground subsidence, erosion, uplift, etc.) to prevent further changes, and the tubular bags 2 and 2 are not separated from each other, and greening with excellent disaster prevention Is possible.

When such a flexible revetment material 1 is laid, erosion and frost heave are effectively prevented, and after a predetermined period of time, plant seeds filled in the tubular bag body 2,
The foliage and root stocks absorb water from rivers and lakes, rainwater, nutrients contained in the soil for plant growth, and germinate and root with the soil for plant growth as a medium. The greening at the edge of the slope is done.

Therefore, there is no need to carry the plant grown in the field to the construction site and plant it on the flexible revetment material, and it is combined with a snake basket-like one in which nylon net is filled with stones. It is not necessary to cover and protect the shores of rivers and lakes, etc., and actively green the waterfront by vegetation to create a habitat environment for aquatic flora and fauna and a multi-natural waterway / bank protection. It is possible to construct efficiently and to follow the change of the ground flexibly, and it is possible to maintain an excellent revetment function for a long time.

[0031]

[0032]

As described above, according to the flexible revetment material of the present invention and the greening method using the same, stones and
Diameter 10 obtained by filling a mixture of soil for plant growth with at least one of plant seeds, foliage and root stock
-30 cm long, 1.0 m to 3.0 m long, using a grid-shaped reinforcing band made of fibers with high tensile strength and high durability, and a fabric woven between the reinforcing bands. Since two or more flexible tubular bags are connected in the longitudinal direction, the tubular bags are flexible and the tubular bags can be deformed with each other. The changeability of the ground, such as uneven ground subsidence, erosion, and uplift, is improved, and further changes can be effectively prevented.

Further, the weight of stones provides good fixing properties, is not divided, and is excellent in disaster prevention of rivers.

On the other hand, during construction, since the ground is well followed by unevenness and ups and downs, the ground to be constructed can be slightly modified and the workability is excellent.

[0035]

[Brief description of drawings]

FIG. 1 is a partially cutaway perspective view showing an embodiment of a flexible revetment material of the present invention.

FIG. 2 is a perspective view showing a different embodiment of the same flexible revetment material.

FIG. 3 is a perspective view of a flexible revetment material constructed on the shore of the river.

FIG. 4 is a cross-sectional view of a flexible revetment material applied to the undulating slope.

FIG. 5 is a perspective view of a flexible revetment material arranged in a zigzag pattern on the slope.

FIG. 6 is a perspective view of the wand portion, the low water passage portion, and the riverbank where flexible seawall materials are applied.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Flexible revetment material, 11 ... Flexible vegetation floating body, 2 ... Cylindrical bag body, 21 ... Unfilled part, 22 ... Filled part, 3 ... Mixture.

─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Yasuaki Watanabe 4-1-8 Konan, Minato-ku, Tokyo Reinju Shinagawa Building Asahi Engineering Co., Ltd. (72) Inventor Hiroshi Kikuta 4-1-8 Konan, Minato-ku, Tokyo Shinagawa Building Asahi Engineering Co., Ltd. (72) Inventor Mitsuo Taniguchi 1 at 590 Takao, Tsuyama City, Okayama Prefecture Japan Vegetation Co., Ltd. (72) Inventor Taira Fujishima 1 at 590 Takao City, Tsuyama City, Okayama Prefecture Japan Vegetation Stock In-company (56) References JP-A-8-3960 (JP, A) JP-A-8-311844 (JP, A) JP-A-8-4014 (JP, A) Actual Development Sho 53-62126 (JP, U) ) Actual Kaihei 7-23023 (JP, U) Actual Kaihei 6-79225 (JP, U) Utility model registration 2510306 (JP, Y2) (58) Fields investigated (Int.Cl. ⁷ , DB name) E02B 3 / 12 A01G 1/00 303 A01G 31/00 604 E02D 17/20 102

Claims (4)

(57) [Claims] 1. A mixture of stones, soil for growing plants, and at least one of plant seeds, foliage and root stocks, having a diameter of 10 to 30 cm and a length of 1.0 m to.
A flexible tubular bag body made of a fiber having a tensile strength of 3.0 m and having high tensile strength and high durability, and a fabric woven between the lattices of the reinforcing band. A flexible revetment material characterized by being formed by connecting two or more wires in the longitudinal direction. 2. A mixture of stone, soil for growing plants, and at least one of plant seeds, foliage and root stocks having a diameter of 1
A grid-like reinforcing band composed of fibers having 0 to 30 cm and a length of 1.0 m to 3.0 m and having high tensile strength and high durability, and a fabric woven between the reinforcing bands. After filling the inside of the flexible tubular bag used for a predetermined period, the boundary between the filled portion and the unfilled portion is closed with a fastening member, and similarly, the mixture is intermittently and repeatedly filled in the longitudinal direction. A flexible revetment material, characterized in that a plurality of filling parts are connected to each other. 3. A method of greening using a flexible revetment material, characterized in that the flexible revetment material according to claim 1 or 2 is laid on the shore of a river, lake, pond or the like. . 4. A flexible revetment material laid on the bottom of a river, which has a diameter of 10 to 30 cm and is filled with stones,
Two or more flexible tubular bags that have a length of 1.0 m to 3.0 m and use a lattice-shaped reinforcing band made of fibers with high tensile strength and high durability are connected in the longitudinal direction. Flexible revetment material.