Underground water control structure for retaining wall slope

Abstract

The utility model relates to a retaining wall slope groundwater control structure which is characterized in that a retaining wall is poured on a groundwater isolating layer, a plurality of groundwater collecting wells are closely arranged on the back side of the retaining wall, and an inverted filter and an upper drainage ditch are sequentially stacked above the groundwater collecting wells; other areas on the back side of the retaining wall and the outer sides of the underground water collecting well, the inverted filter and the upper drainage ditch are covered with soil, a lower drainage ditch is arranged at the corner of the free side of the retaining wall, and a drainage pipeline used for communicating the underground water collecting well with the lower drainage ditch is arranged in the retaining wall. The device has the beneficial effects that when rainfall occurs or the underground water level rises, underground water in the side slope is collected through the underground water collecting well, and the collected underground water is discharged into the lower drainage ditch located on the free side of the retaining wall through the drainage pipeline, namely, the collected underground water is discharged to the outside of the side slope; according to the underground water control structure, the underground water level and the underground water pressure in the side slope can be rapidly reduced, the stability of the side slope is improved, and the influence of the underground water pressure on the side slope is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of civil engineering, specifically relates to a retaining wall slope groundwater control structure. BACKGROUND

[0002] With the acceleration of urbanization, a large amount of land is developed and utilized, and retaining wall slope plays a more and more important role in urban construction, however, the stability problem of retaining wall slope has been a difficult problem in engineering field, especially in the area where the underground water level is higher, the influence of underground water on the stability of retaining wall slope is more significant, therefore, how to effectively control underground water and improve the stability of retaining wall slope is the problem to be solved in the current engineering field. SUMMARY

[0003] The utility model relates to the technical field of civil engineering, specifically relates to a retaining wall slope groundwater control structure.

[0004] The utility model solves the technical problem that the utility model provides a retaining wall slope groundwater control structure to overcome the above-mentioned deficiencies in the prior art.

[0005] A retaining wall slope groundwater control structure, comprising: a groundwater isolation layer, a retaining wall is poured on the groundwater isolation layer, a plurality of groundwater collection wells are arranged close to the back side of the retaining wall, a filter layer and an upper drainage ditch are stacked in turn above the groundwater collection wells, other areas of the back side of the retaining wall and the outside of the groundwater collection wells, the filter layer and the upper drainage ditch are covered by soil, a lower drainage ditch is arranged at the corner of the free side of the retaining wall, and a drainage pipeline for connecting the groundwater collection wells and the lower drainage ditch is arranged in the retaining wall.

[0006] On the basis of the above technical scheme, the utility model can also be improved as follows.

[0007] Further, the drainage pipe is arranged in the retaining wall in the area corresponding to the filter layer, and the drainage pipe is arranged to be inclined to the free side of the retaining wall at a slope of 4% to 5% along the back side of the retaining wall.

[0008] Further, the area where the filter layer contacts the soil is covered with filter geotextile.

[0009] Further, the unit area mass of the filter geotextile is 200g / m 2 ~ 300g / m 2 .

[0010] Further, the filter layer comprises: a gravel filter layer located below and a sand gravel filter layer located above.

[0011] Further, the thickness of the gravel filter layer is less than the thickness of the sand gravel filter layer.

[0012] Further, the drainage pipeline is arranged downwardly along the back side of the retaining wall towards the open side of the retaining wall.

[0013] Further, the drainage pipeline is arranged with a slope of 4% to 5%.

[0014] Further, the upper drainage ditch is level with the top of the retaining wall.

[0015] Further, the retaining wall is made of C30 concrete, and the underground water isolation layer is a rammed clay water isolation layer.

[0016] The beneficial effects of the utility model are as follows:

[0017] 1) When the rainfall or the underground water level rises, the underground water in the slope is collected by the underground water collection well, and the collected underground water is discharged into the lower drainage ditch on the open side of the retaining wall through the drainage pipeline, that is, is discharged to the outside of the slope, the structure effectively solves the problems of poor underground water discharge and large lateral pressure on the retaining wall in the traditional drainage mode, the underground water control structure can more quickly reduce the underground water level and the underground water pressure in the slope, thereby reducing the lateral pressure of water on the retaining wall, significantly improving the stability of the slope, compared with the traditional method, the utility model not only can improve the construction quality and safety, but also has high practicality and economic value due to its high efficiency and reliability;

[0018] 2) By setting the underground water isolation layer on the outside of the slope of the retaining wall, the influence of the underground water pressure on the slope is effectively reduced, the use of the isolation layer blocks the direct contact of the underground water with the retaining wall and the slope, significantly improves the stability of the slope, solves the problem of slope instability caused by the underground water pressure, and enhances the safety and reliability of the retaining wall;

[0019] 3) By introducing the filter layer in the back side of the retaining wall, the underground water is quickly discharged and collected for reuse, compared with the traditional drainage mode, not only the discharge speed of the underground water is accelerated, but also the reuse of water resources is effectively considered, thereby improving the drainage efficiency and reducing the waste of resources;

[0020] 4) Through the filter layer, the filter geotextile and the drainage pipeline on the back side of the retaining wall, the soil and water loss of the soil body on the back side of the retaining wall can be better reduced, thereby reducing the seepage flow through the retaining wall, and further ensuring the stability of the slope. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 The utility model discloses a structure diagram of the retaining wall slope underground water control structure.

[0022] In the drawings, the component list represented by each sign is as follows:

[0023] 1. Groundwater isolation layer, 2. Retaining wall, 3. Groundwater collection well, 4. Upper drainage ditch, 5. Soil, 6. Lower drainage ditch, 7. Drainage pipe, 8. Geotextile filter, 9. Gravel filter layer, 10. Sand and gravel filter layer, 11. Drainage pipe. DETAILED DESCRIPTION

[0024] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0025] Example 1

[0026] like Figure 1 As shown, a retaining wall slope groundwater control structure comprises: a groundwater isolation layer 1, the groundwater isolation layer 1 is used to isolate the influence of groundwater pressure on the slope and improve the stability of the slope, a retaining wall 2 is cast on the groundwater isolation layer 1, a plurality of groundwater collection wells 3 are arranged closely on the back side of the retaining wall 2, the groundwater collection wells 3 on the back side of the retaining wall 2 are preferably arranged vertically, a filter layer and an upper drainage ditch 4 are stacked in sequence above the groundwater collection wells 3, the upper drainage ditch 4 is used to collect ground rainwater, and the upper drainage ditch 4 is wider than the filter layer, the other areas on the back side of the retaining wall 2 are covered by soil 5, the outer side of the groundwater collection well 3 is covered by soil 5, the outer side of the filter layer is covered by soil 5, and the outer side of the upper drainage ditch 4 is covered by soil 5; a lower drainage ditch 6 is arranged at the corner of the retaining wall 2 facing the air, and a drainage pipe 7 is arranged inside the retaining wall 2 to connect the groundwater collection well 3 with the lower drainage ditch 6;

[0027] 1) When it rains or the groundwater level rises, groundwater inside the slope is collected through the groundwater collection well 3 and discharged into the lower drainage ditch 6 on the air-facing side of the retaining wall 2 through the drainage pipe 7, that is, discharged to the outside of the slope. This structure effectively solves the problems of poor groundwater drainage and large lateral pressure on the retaining wall 2 in traditional drainage methods. The groundwater control structure can more quickly reduce the groundwater level and groundwater pressure inside the slope, thereby reducing the lateral pressure of water on the retaining wall 2 and significantly improving the stability of the slope. Compared with traditional methods, the utility model not only improves construction quality and safety, but also has high practicality and economic value due to its high efficiency and reliability.

[0028] 2) By providing a groundwater isolation layer 1 outside the retaining wall 2 slope, the impact of groundwater pressure on the slope is effectively reduced. The use of this isolation layer blocks direct contact between groundwater and the retaining wall and slope, significantly improving the stability of the slope, solving the problem of slope instability caused by groundwater pressure, and enhancing the safety and reliability of the retaining wall;

[0029] 3) By introducing the filter layer in the retaining wall 2 wall back side, the rapid drainage and collection of groundwater for reuse, compared with the traditional drainage, not only to speed up the discharge of groundwater, but also effectively take into account the reuse of water resources, so as to improve the drainage efficiency and reduce the waste of resources.

[0030] Embodiment 2

[0031] As Figure 1 shown, this embodiment is further improved on the basis of embodiment 1, as follows:

[0032] The retaining wall 2 in the corresponding area of the filter layer is provided with a drainage pipe 11 which is inclined to the free side of the retaining wall 2 with a slope of 4% to 5% along the back side of the retaining wall 2. The drainage pipe 11 can quickly drain the groundwater in the filter layer to the free side of the retaining wall 2. Under normal circumstances, the drainage pipe 11 is preferably distributed with a slope of 5%.

[0033] Further, the area where the filter layer contacts the soil 5 is covered with a filter geotextile 8. Through the filter layer, the filter geotextile 8 and the drainage pipe 11 on the back side of the retaining wall 2, the soil and water loss on the back side of the retaining wall 2 can be better reduced, thereby reducing the seepage flow through the retaining wall 2 and further ensuring the stability of the slope.

[0034] In this embodiment, the unit area mass of the filter geotextile 8 is preferably 200g / m 2 ~ 300g / m 2 .

[0035] In addition, the filter layer includes a gravel filter layer 9 located below and a sand gravel filter layer 10 located above. The structure of the filter layer can realize the rapid drainage and collection of groundwater for reuse, compared with the traditional drainage, not only to speed up the discharge of groundwater, but also effectively take into account the reuse of water resources, so as to improve the drainage efficiency and reduce the waste of resources. The thickness of the gravel filter layer 9 is less than that of the sand gravel filter layer 10, which is more rapid than the traditional drainage. The groundwater through the gravel filter layer 9 and the sand gravel filter layer 10 of the retaining wall 2 will concentrate the water body extracted by the precipitation and be used for washing and flushing toilets in domestic water, and for dust control by watering on site. The water body treated or meeting the requirements can be used for the recycling technology of structure maintenance water, foundation pit support water, such as soil nailing wall support water, soil nailing hole cement slurry water, and concrete test block maintenance water, on-site masonry plastering construction water, etc.

[0036] Embodiment 3

[0037] As Figure 1 shown, this embodiment is further improved on the basis of embodiment 1 or 2, as follows:

[0038] The drainage pipe 7 is arranged along the back side of the retaining wall 2 and tilted downward toward the air side of the retaining wall 2 , which is beneficial for the groundwater collected in the groundwater collection well 3 to be discharged into the lower drainage ditch 6 .

[0039] Typically, the drainage pipe 7 is preferably distributed at a slope of 4% to 5%.

[0040] Example 4

[0041] like Figure 1 As shown, this embodiment is a further improvement on the basis of embodiment 1, 2 or 3, and the details are as follows:

[0042] The upper drainage ditch 4 is at the same height as the top of the retaining wall 2, and the retaining wall 2 is cast with C30 concrete, and the groundwater isolation layer 1 is a compacted clay waterproof layer.

[0043] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are illustrative and cannot be understood as limitations on the present invention. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A retaining wall slope groundwater control structure, characterized by, The invention relates to a retaining wall (2) built on a groundwater isolation layer (1), wherein a plurality of groundwater collection wells (3) are arranged in close proximity to the back side of the retaining wall (2), and wherein a reverse filter layer and an upper drainage ditch (4) are sequentially stacked above the groundwater collection wells (3), and wherein the other areas of the back side of the retaining wall (2) as well as the outside of the groundwater collection wells (3), the reverse filter layer and the upper drainage ditch (4) are covered by soil (5), and wherein a lower drainage ditch (6) is arranged at the corner of the free side of the retaining wall (2), and wherein a drainage pipe (7) is arranged in the retaining wall (2) to communicate the groundwater collection wells (3) with the lower drainage ditch (6). The retaining wall (2) is provided with a drainage pipe (11) in the area corresponding to the reverse filter layer, which is arranged to slope at an angle of 4%-5% from the back side of the retaining wall (2) to the free side of the retaining wall (2).

2. A retaining wall slope groundwater control structure according to claim 1, wherein, The area where the reverse filter layer contacts the soil (5) is covered by a reverse filter geotextile (8).

3. A retaining wall slope groundwater control structure according to claim 2, wherein, The reverse filter layer comprises a gravel reverse filter layer (9) at the lower side and a sand-gravel reverse filter layer (10) at the upper side.

4. A retaining wall slope groundwater control structure according to claim 3, wherein, The unit area mass of the geotextile (8) is 200 g / m 2 ~ 300 g / m 2 .

5. A retaining wall slope groundwater control structure according to claim 1, wherein, The thickness of the gravel reverse filter layer (9) is less than that of the sand-gravel reverse filter layer (10).

6. A retaining wall slope groundwater control structure according to claim 5, wherein, The drainage pipe (7) is arranged to slope downward from the back side of the retaining wall (2) to the free side of the retaining wall (2).

7. A retaining wall slope groundwater control structure according to claim 1, wherein, The drainage pipe (7) is arranged to slope at an angle of 4%-5%.

8. A retaining wall slope groundwater control structure according to claim 7, wherein, The upper drainage ditch (4) is at the same height as the top of the retaining wall (2).

9. A retaining wall slope groundwater control structure according to claim 1, wherein, The retaining wall (2) is made of C30 concrete, and the groundwater isolation layer (1) is a rammed clay water isolation layer.

10. A retaining wall slope groundwater control structure according to claim 1, wherein, ​

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