KR101103051B1 - Apparatus for draining subsurface water - Google Patents

Abstract

The present invention relates to a groundwater drainage device for relieving the positive pressure of groundwater acting on a building that is constructed relatively lower than the groundwater level, and more particularly, groundwater flowed from the lower part of the foundation concrete embedded in the foundation concrete layer. It is possible to straighten the connecting pipes connecting the vertical vertical flow pipes to simplify the piping and the construction is very easy to groundwater drainage.

The present invention is a water collecting well installed on one side of the basement of the building, the first groundwater drainage means installed on the base concrete layer supporting the building, and the first groundwater drainage means and a plurality of installed through the foundation concrete layer A plurality of horizontal pipes connected to the vertical water pipes of the plurality of horizontal pipes respectively extending to the pillars or walls of the building along the upper surface of the foundation concrete layer, and between two horizontal pipes adjacent to each other. And a second groundwater drainage means connected to each other through the interconnection pipes and the horizontal pipes to maintain the groundwater level below the design stability level of the building.

According to the present invention by connecting the horizontal pipes extending a certain length in the direction of the pillar or wall of the building from the vertical water pipes, it is possible to straighten the connecting pipes and the construction is very easy. In addition, it provides an easy advantage of maintenance and maintenance due to construction errors.

Groundwater, Drainage, Drainage, Sump, Buoyancy, Positive Pressure

Description

Groundwater drainage {Apparatus for draining subsurface water}

The present invention relates to a groundwater drainage device for relieving the positive pressure of groundwater acting on a building that is constructed relatively lower than the groundwater level, and more particularly, groundwater flowed from the lower part of the foundation concrete embedded in the foundation concrete layer. It is possible to straighten the connecting pipes connecting the vertical vertical flow pipes to simplify the piping and the construction is very easy to groundwater drainage.

In general, when a building structure is newly constructed, as shown in FIG. 1, the ground of the building structure generates self-weight (dead load) due to the building structure, and buoyancy due to groundwater acts simultaneously, in this case, acting on the floor of the building. If the buoyancy (positive pressure) by groundwater is greater than the weight of the building, the building will be injured and the building structure will be greatly damaged by the increase and decrease of hydraulic pressure.

In particular, when constructing large-scale buildings such as apartments, underground parking is mandatory in recent years, and the underground parking lot of apartments is located in the lower ground due to the increasing trend of occupants and their desire to secure green space. The buoyancy will be more affected.

In order to fundamentally eliminate such adverse effects on buoyancy buoyant, the anchor anchor method is generally used to fix the structure to the lower bedrock and drainage that suppresses buoyancy acting on the floor by continuously draining the floor. Dewatering has been used.

However, in the case of the anchoring method, since it is a method of perforating to the rock layer and tensioning and fixing more than the required load after inserting the strands, the construction cost is high, the construction period is long, and water-resistant defects occur frequently in the anchor drilling part. In addition, the damage of the structure is easy to occur due to the corrosion and stress reduction of the tensioned steel wire, difficult to repair, and in order to compensate for this, the re-stretching system has a disadvantage that is 2, 3 times more expensive than the general case.

As an example of the drainage method, Korean Patent Registration No. 317530 discloses a positive pressure relief system for underground structures, and Utility Model No. 0195274 discloses a vertical drainage pipe for preventing buoyancy of underground buildings. The vertical buoyancy pipe for preventing buoyancy has a drainage hole formed at the bottom of the foundation slab, the filter pipe is connected through the drainage hole, and the inlet pipe is installed vertically, and the upper end portion of the inlet pipe is connected to the upper ground pipe level according to the usual groundwater level. It has a structure. The buoyancy preventing drain pipe and the upper pipe is exposed to the outside is not aesthetically good, will interfere with the internal facilities, and maintenance is not easy.

In order to solve the above problems, the present applicant has developed the groundwater drainage device disclosed in Korean Patent Registration No. 0710920. However, the groundwater drainage device is connected to the drainage portion installed in the lower portion of the foundation concrete, vertical connecting pipes vertically penetrating the foundation concrete layer are interconnected by the first horizontal connection pipe. In this case, when installing in a real site, a plurality of vertical connectors are not arranged in a row, but are irregularly and randomly arranged in several places of the foundation concrete layer. Therefore, the first horizontal connector which interconnects the vertically arranged vertical connectors is also not connected in a straight line, and it is necessary to connect both vertical connectors in a form bent by a joint pipe in the middle, so the piping is too complicated and the construction is not easy. A problem was found.

The present invention was created in order to improve the above problems, the groundwater is easy to install without the complexity of the pipe construction when interconnecting the vertical water pipes through which the groundwater flowing from the lower part of the foundation concrete flows The purpose is to provide a drainage system.

Groundwater drainage device of the present invention for achieving the above object is a water collecting well installed on one side of the basement of the building; A first groundwater drainage means installed below the foundation concrete layer supporting the building; A plurality of vertical water pipes connected to the first ground drainage means and installed through the foundation concrete layer; A plurality of horizontal pipes connected to the vertical water pipes and extending to a pillar or a wall of the building along an upper surface of the foundation concrete layer; Connecting pipes for connecting and passing water between adjacent horizontal pipes among the horizontal pipes; It is characterized in that it comprises a second groundwater drainage means connected to each of the horizontal pipes to maintain the groundwater level below the design stability level of the building.

The second groundwater drainage means extends in the same direction as the horizontal pipes and is formed along the side of the column or wall of the building up to a design stable water level of the groundwater, and connected to the sump well from the overflow pipe. Overflowing groundwater is characterized in that it is provided with a drain pipe drained to the sump.

The second groundwater drainage means is further provided on each end of the horizontal pipe is characterized in that it further comprises a branch box for branching the plurality of overflow pipes.

It characterized in that it further comprises a drain plate provided between the base concrete layer and the upper concrete concrete layer is installed on the base concrete layer and the horizontal pipes and the connection pipes are installed.

The drainage plate includes a main body having a rectangular shape and a plurality of protrusions which are inserted from the main body and protrude downward, and are spaced apart from each other in the longitudinal and transverse directions, and the spacing between each of the protrusions is the horizontal pipes and the connection pipes. It is characterized by being larger than the outer diameter.

As described above, according to the groundwater drainage device of the present invention, the vertical water pipes, which are buried in the foundation concrete layer and flowed from the lower part of the foundation concrete, are not directly connected to each other, but are directly connected to the pillar or wall of the building from the vertical water pipes. By interconnecting the lengthwise horizontal pipes are possible to straighten the connectors to simplify the piping is very easy to install. In addition, it provides an easy advantage of maintenance and maintenance due to construction errors.

In addition, by installing a drainage plate between the base concrete layer and the upper protective concrete layer to protect the horizontal pipe and the connection pipe and at the same time can reduce the condensation and leakage of the building floor surface.

Hereinafter, the groundwater drainage apparatus according to a preferred embodiment of the present invention with reference to the accompanying drawings will be described in detail.

1 is a partial cutaway perspective view showing an embodiment of the groundwater drainage apparatus according to the present invention, Figure 2 is a partial plan view showing a second groundwater drainage means of the groundwater drainage, Figure 3 is a first groundwater drainage means 4 is a perspective view illustrating a partial extraction of the groundwater drainage system.

Referring to the drawings, the groundwater drainage device 10 is a first groundwater drainage for collecting the groundwater from the ground basin 5 and the groundwater drainage system 100 which is largely installed on one side of the basement of the building and discharging the groundwater to the catchment well 100. Means 20, vertical water pipes 50 connected to the first groundwater drainage means 20, horizontal pipes 60 extending from the vertical water pipes 50, and horizontal pipes 60 And a second groundwater drainage means (80) connected to the horizontal pipes (60) and the connecting pipes (70) interconnected therebetween.

It is for collecting ground water from the underground bed 3 of the first groundwater drainage means 20 and discharging it to the sump well 100. For example, the nonwoven fabric 15 and the nonwoven fabric 15 are installed in the underground bed 3. A plurality of first drain plates 30 are installed on the) and arranged to be adjacent to the first drain plate 30, the height from the upper surface of the base plate 70 relative to the first drain plate (30) Has a second drain plate 40 which is formed high and forms a groundwater discharge passage 45 to discharge groundwater introduced through the gap formed by the first drain plates 30 to the sump 100. In addition, a groundwater discharge pipe 103 communicating with the discharge passage 45 of the second drainage plate 40 is installed inside the collecting well 100, and a valve 105 capable of opening and closing a flow path in the discharge pipe 103. Is installed.

As shown in detail in FIG. 3, the first drain plate 30 includes a first main body 31 having a rectangular plate shape, and a first protrusion 32 drawn in a predetermined depth downward from the first main body 31. Since the first protrusion 32 protrudes downward from the first body 31, when the first drain plate 30 is arranged on the nonwoven fabric of the base plate 3, the first body 31 and the base plate 3 are disposed. A predetermined space is formed on the space to form a space for draining the groundwater. Since the upper surface of the first protrusion 32 is open, the concrete mortar is filled in the filling space 33 to prevent the spaced apart space from collapsing due to the load of the concrete.

The second drain plate 40 includes a second main body 41 and a second protrusion 44 protruding downward from the second main body 41. The second main body 41 includes a drain board 42 formed in a rectangular plate shape, and a skirt portion 43 extending a predetermined length downward from an edge of the drain board 42. The skirt portion 43 has a base concrete layer 50 through a space between the upper surface of the first drain plate 30 and the upper surface of the second drain plate 40 according to the height difference between the first and second drain plates 30 and 40. In order to block the flow of concrete mortar during pouring, it is preferable that the lower end of the skirt portion 43 extends to contact the upper surface or the side surface of the first drain plate 30.

Similar to the first protrusion 32, the second protrusion 44 protrudes downward from the second main body 41, and is provided with a filling space 33 in which the second protrusion 44 is opened upward so that concrete mortar can be filled therein. The second protrusion 44 has a longer protruding length than the first protrusion 32, so that a distance from the top surface of the foundation concrete layer 5 to the second body 41 is greater than that of the first body 31. It is relatively short compared to the separation distance of). As such, when the protrusion height of the second protrusion 44 is formed to be long and connected, the point where the second drain plate 40 is arranged has a larger drain space than the portions where the first drain plates 30 are arranged. As a result, the movement of the infiltration water or the dew condensation water can be easily performed. Therefore, the second drainage plate 40 may be arranged to extend to the sump well 100 to form a discharge passage 45 extending to the sump well 100.

Although the second drainage plate 40 also has a larger distance from the base plate 3 than the first drainage plate 30, the concrete mortar during filling of the foundation concrete layer 50 fills the space of the second protrusion 44. Since it is filled in 33, the second drain plate 40 may also stably support the foundation concrete layer 5.

The first groundwater drainage means 20 is not limited to the above-described embodiment, and its structure may vary depending on the ground on which the building is installed. In the case of the soft ground, the first groundwater drainage means 20 may be formed of drainage pipes wrapped by a nonwoven fabric. have.

In addition, the first groundwater drainage means 20 may control the drainage of the groundwater by manipulating the valve 105 installed in the discharge pipe 103.

The vertical water pipe 50 is installed vertically through the foundation concrete layer 5 so that the lower end is connected to the first groundwater drainage means 20. The upper portion of the vertical water pipe 50 is installed to protrude a certain height from the base concrete layer (5). The vertical water pipe 50 has a flow path formed therein so that the groundwater introduced from the first groundwater drainage means 20 is moved by pressure.

And the upper portion of the vertical water pipe 50 is provided with a cylindrical connecting cap 55 of the lower opening and the hollow inside so that the horizontal pipe 60 can be connected at right angles. The side of the connection cap 55 is a pipe-shaped protrusion (not shown) is formed to protrude a predetermined length. The inner diameter of the protrusion is slightly larger than the outer diameter of the horizontal tube 60 so that the horizontal tube 60 fits into the protrusion. Unlike shown, the horizontal pipe 60 may be connected to the vertical water pipe 50 and the elbow pipe or may be connected by a conventional connector.

The horizontal pipe 60 is coupled to the connection cap 55 and extends in the direction of the pillar 9 or the wall of the building along the upper surface of the foundation concrete layer 5. In the example shown, the horizontal tube 60 extends in the direction of the pillar 9. Horizontal tubes 60 extending from each vertical water pipe 50 are formed extending in the direction of each pillar (9). Therefore, the horizontal tubes 60 are spaced apart from each other and extend side by side.

In this case, the length of the horizontal tube 60 extending from the vertical tube 50b farther from the column than the horizontal tube 60 extending from the vertical tube 50a having a short distance from the column 9 is relative. Longer. These horizontal pipes 60, the length of the unit pipes are interconnected in a straight line to extend to the column is easy to adjust the length.

The vertical water pipe 50 and the horizontal pipe 60 is a pipe of a pvc material having a flow path formed therein, and preferably, a pipe having a diameter of 50 mm.

Each horizontal tube 60 is interconnected in the transverse direction by a connecting tube (70). In this case, the four connecting pipes 60 having a smaller diameter than the horizontal pipes extend side by side between neighboring horizontal pipes 60. In addition, the connection tube 70 may be two or three side by side extending horizontal pipes 60 of course.

In the present invention as described above, in the connection work so that the groundwater flowing into any one of the vertical water pipe 50 to communicate with the other vertical water pipes, the vertical water pipe 50 to the connection pipe 70 as in the prior art Rather than connecting directly to the horizontal pipe 60 extending to a predetermined length from the vertical water pipe 50 has the advantage that the connection pipe 70 can be installed in a straight line. Therefore, piping is not complicated and simple, and construction is fast. In addition, it provides an easy advantage of maintenance and maintenance of the pipes due to construction errors.

The second groundwater drainage means 80 is connected to the first groundwater drainage means 20 and discharges groundwater that has not been drained by the first groundwater drainage means 20 when the groundwater level is rapidly increased due to rainy season or flooding. The overflow pipe 81 and the drain pipe 85 are provided.

The overflow pipe 81 is connected to the end of the horizontal pipe 60 and extends in the vertical direction side by side along the side of the column (9). The upper height of the overflow pipe 81 is extended to the height of the design stable water level of the groundwater of the building. In this case, a branch box 65 is installed at the end of the horizontal pipe 60 so that a plurality of the upstream pipe can be easily branched from the horizontal pipe 60. In the illustrated example, two or four overflow pipes 81 are branched from one branch box 65. The branch box 65 is made of a circular pipe having a diameter equal to or larger than that of the horizontal pipe 65. In addition, the branch box 65 may be formed in various shapes such as a rectangular cylindrical shape.

One side of the pillar 9 is preferably installed in the mounting portion 8 formed of a square groove so that the overflow pipe 81 is not exposed to the outside of the pillar 9. The drainage pipe 85 is installed at the mounting portion 8 of the column in parallel with the overflow pipe 81 and flows through the groundwater flowing in from the overflow pipe 81 and flows at the same height as the overflow pipe 85. The drain pipe 85 extends into the sump 100 to allow the groundwater flowing through the drain pipe 85 to be discharged to the sump 100.

In addition, unlike the illustrated, in order to discharge the groundwater flowing over from the overflow pipe 81 to the sump 100, a drainage channel (not shown) in communication with the mounting portion 8 of the column is formed in the base concrete layer 5 and discharged. You can. In this case, the drainage channel is formed to extend up to the sump 100.

The second groundwater drainage means 80 having the above structure is connected by the first groundwater drainage means 20, the vertical water supply pipe 50, and the horizontal pipe 60 to use the first groundwater drainage means 20 for a long time. Therefore, when the drainage efficiency is lowered or when the capacity of the first groundwater drainage means 20 is exceeded, it may be used as an auxiliary discharge means for discharging groundwater.

On the other hand, after the horizontal pipe 60 and the connecting pipe 70 is installed on the base concrete layer 5, the upper protective concrete layer 7 is placed on the base concrete layer (5). In this case, a third drainage plate 90 is installed between the foundation concrete layer 5 and the upper protective concrete layer 7 to prevent condensation of the floor of the building.

Since the third drainage plate 80 has the same configuration as the first drainage plate 30 mentioned above, a detailed description thereof will be omitted. However, the distance between each protrusion formed to protrude downward of the main body is formed larger than the outer diameter of the horizontal tube 60 and the connecting tube 70. For example, if the outer diameter of the horizontal tube is 50 mm and the diameter of the tube is 25 mm, the distance between the projections should be greater than 50 mm. Therefore, when constructing the third drainage plate 90 on the foundation concrete layer 5, the connecting pipe 70 and the horizontal pipe 60 are disposed between the protrusions. The third drainage plate 90 can protect the horizontal pipe 60 and the connection pipe 70 from external impact during concrete placing to form the upper protection concrete layer 7 together with the prevention of condensation of the floor of the building. In addition, by preventing the deformation of the horizontal pipe 60 and the connection pipe 70, it is possible to block the leakage of the connection portion in advance.

The groundwater drainage device 10 of the present invention configured as described above discharges groundwater to the sump 100 through the first groundwater drainage means 20 installed in the basement of the building. Underground water is collected into the space formed by the first drain plate 30 through the nonwoven fabric, and the collected ground water is discharged through the discharge passage 45 and the discharge pipe 103 formed by the second drain plate 40. It is discharged to the sump 100.

When the groundwater level around the underground building is rapidly increased due to the rainy season or the flood, the groundwater collected by the first groundwater drainage means 20 is drained to the sump 100 through the second groundwater drainage means 80. In this process, if the groundwater level rises above the design stable level, it is discharged until the groundwater level becomes below the design stable level by the above-described method. In particular, the overflow pipe 81 can prevent the groundwater discharge from being suppressed by the difference between the groundwater pressure and the atmospheric pressure when the groundwater is discharged by the first groundwater drainage means 20. That is, the groundwater discharge pressure at the underground side can be made under atmospheric pressure.

In addition, since the first groundwater drainage means 20 may control the drainage by the valve 105 installed in the discharge pipe, when the valve 105 is locked, the first groundwater drainage means 20 may only operate when the groundwater level rises above the design stability level. Groundwater may be drained through the groundwater drainage means 80.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the scope of the invention.

Therefore, the true scope of protection of the present invention should be defined only by the appended claims.

1 is a partial cutaway perspective view showing an embodiment of the groundwater drainage apparatus according to the present invention,

Figure 2 is a partial excerpt plan view showing a second groundwater drainage means of the groundwater drainage,

3 is a perspective view showing a first groundwater drainage means,

4 is a partial cross-sectional view of the groundwater drainage.

<Description of the symbols for the main parts of the drawings>

3: underground foundation 5: foundation concrete layer

7: Concrete layer for upper protection 9: Column

20: first groundwater drainage means 50: vertical water pipe

60: horizontal tube 70: connector

80: second groundwater drainage means 90: third drainage plate

100: sump

Claims (5)

A water collecting well installed on one side of the basement of the building; A first groundwater drainage means installed below the foundation concrete layer supporting the building; A plurality of vertical water pipes connected to the first ground drainage means and installed through the foundation concrete layer and having an upper portion protruding a predetermined height to an upper portion of the foundation concrete; It is connected to each of the connection caps provided on the top of the vertical water pipes and disposed in a horizontal direction outside the foundation concrete layer, the corresponding pillar or wall direction of the plurality of pillars or walls of the building along the upper surface of the foundation concrete layer A plurality of horizontal tubes extending side by side to be spaced apart from each other by extending to; A plurality of horizontal connecting pipes interconnecting one point of the extension portions of both neighboring horizontal pipes in a substantially vertical direction with respect to the extending direction of the horizontal pipes so as to connect the plurality of horizontally extending horizontal pipes; Second groundwater drainage means connected to ends of the horizontal pipes to maintain the groundwater level below the design stable level of the building; And And an upper protective concrete layer disposed on an upper portion of the horizontal pipe and the connection pipe disposed horizontally on the upper portion of the basic concrete layer. The second groundwater drainage means extends in the same direction as the horizontal pipes and is formed along the side of the column or wall of the building up to a design stable water level of the groundwater, and connected to the sump well from the overflow pipe. Groundwater drainage device characterized in that it comprises a drain pipe for overflowing the groundwater flowing into the sump. delete The groundwater drainage device according to claim 1, wherein the second groundwater drainage means further includes branching boxes respectively installed at end portions of the horizontal pipes and branching the plurality of overflow pipes. The groundwater drainage device according to claim 1, further comprising a drain plate disposed between the foundation concrete layer on which the horizontal pipes and the connection pipes are installed, and the upper protective concrete layer placed on the foundation concrete layer. The apparatus of claim 4, wherein the drain plate includes a main body having a rectangular shape and a plurality of protrusions which are inserted from the main body and protrude downward, and are spaced apart from each other in the longitudinal and transverse directions. Wherein the spacing between each protrusion is greater than the outer diameter of the horizontal tubes and the connecting tubes.

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