Recyclable drainage device for foundation pit slope
By using a drill sleeve and filter media design in the foundation pit slope interception and drainage system, the problem of soil loss in PVC pipes was solved, achieving effective water and soil separation and ensuring construction safety and slope stability.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- WENHUA UNIV
- Filing Date
- 2025-05-08
- Publication Date
- 2026-04-17
AI Technical Summary
In existing foundation pit slope interception and drainage systems, the PVC pipes lack internal interception structures, leading to soil loss during drainage.
A recyclable drainage device for foundation pit slopes was designed. It consists of a water inlet assembly composed of a drilling sleeve, a filter media section, and an opening section. The drilling sleeve is inserted into the slope, and the filter media section intercepts soil particles to prevent soil from being lost with the water.
It effectively prevents soil particles from being discharged with water, avoids soil and water loss at the insertion point of the slope drainage pipe, and ensures construction safety and slope stability.
Smart Images

Figure CN224133779U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of foundation pit slope interception and drainage technology, and in particular to a foundation pit slope recyclable drainage device. Background Technology
[0002] Slope interception and drainage is an important part of foundation pit engineering. It aims to control the impact of groundwater and surface water on the slope. The interception and drainage system can lower the water level in the foundation pit, reduce the water and soil pressure on the support structure, ensure construction safety and slope stability, and avoid collapse accidents caused by water damage.
[0003] In existing foundation pit slope interception and drainage systems, PVC pipes are usually buried in the slope soil to collect and drain liquid water from the soil. However, during use, the PVC pipes do not have an internal interception structure, which allows the soil at the insertion point of the PVC pipe to flow out with the water through the pipe, resulting in soil erosion at that location.
[0004] Therefore, in order to solve the above problems, this utility model proposes a recyclable drainage device for foundation pit slopes. Utility Model Content
[0005] The purpose of this invention is to provide a recyclable drainage device for foundation pit slopes to solve the problems mentioned in the background art.
[0006] To achieve the above objectives, this utility model provides the following technical solution: a recyclable drainage device for foundation pit slopes, comprising:
[0007] The main body of the drainage pipe is used to collect water from the slope soil.
[0008] A drilling assembly, comprising a drilling sleeve disposed at one end of a drain pipe body, wherein a fixing part for fixing the drilling sleeve is provided at the connection between the drain pipe body and the drilling sleeve.
[0009] The water inlet assembly includes an opening portion disposed on the outside of the drain pipe body and the drilling sleeve, the opening portion being used for water inlet into the drain pipe body and the drilling sleeve, and the inner cavity of the drain pipe body and the drilling sleeve being provided with a filter material portion for isolating soil.
[0010] A water outlet assembly is located at the other end of the main body of the drain pipe and is used for draining water from the main body of the drain pipe.
[0011] Preferably, the fixing part includes:
[0012] The locking external thread is located on the outside of the drain pipe body;
[0013] The locking internal thread is located on the inner wall of the drill sleeve and is used to lock and fix the external thread.
[0014] Preferably, the opening includes:
[0015] First water inlet hole, and multiple first water inlets are formed around the outside of the drill sleeve;
[0016] Second water inlet, multiple second water inlets are arranged around the outside of the main body of the drain pipe;
[0017] The absorbent material is placed in the inner cavity of one end of the drain pipe body and the inner cavity of the drilling sleeve.
[0018] Preferably, the drill sleeve is conical, and the conical drill sleeve is used to reduce insertion resistance.
[0019] Preferably, the filter media section includes:
[0020] The first filter material is disposed in the inner cavity of the main body of the drain pipe;
[0021] The second filter media is disposed on the side of the first filter media away from the drill sleeve;
[0022] The third filter media is disposed on the side of the second filter media away from the first filter media;
[0023] The isolation nets, including multiple isolation nets, are installed inside the main body of the drain pipe. The isolation nets are used to separate the first filter material, the second filter material, and the third filter material.
[0024] Preferably, the water outlet assembly includes:
[0025] The outlet pipe has its end inserted into the middle of the main body of the drain pipe;
[0026] A connector is provided at the intersection of the outlet pipe and the drain pipe body, and the connector is used to fix the position of the outlet pipe.
[0027] Preferably, the connector includes:
[0028] A fixed external thread is provided on the outside of the water outlet pipe;
[0029] A fixed internal thread is provided on the inner wall of the other end of the drain pipe body, and the fixed internal thread is used to engage and fix the fixed external thread.
[0030] The technical effects and advantages of this utility model are as follows:
[0031] The main body of this utility model is inserted into the slope through the drilling sleeve in the drilling assembly. Liquid water in the soil enters the main body of the drainage pipe through the opening on the outside of the drilling sleeve. The filter material intercepts the soil particles in the water, preventing the soil particles from being discharged out of the drainage pipe with the water. This design uses the opening and filter material to intercept soil, avoiding soil and water loss at the insertion point of the drainage pipe on the slope. Attached Figure Description
[0032] Figure 1 This is a schematic diagram of the overall structure of this utility model and the foundation pit slope.
[0033] Figure 2 This is a schematic diagram of the overall structure of this utility model.
[0034] Figure 3 This is a cross-sectional view of the entire utility model.
[0035] Figure 4 This is a cross-sectional view of the main body of the drain pipe and the drilling sleeve of this utility model.
[0036] In the diagram: 1. Main body of the drain pipe; 101. Second inlet hole; 102. Fixed internal thread; 103. Locking external thread; 2. Drill sleeve; 201. First inlet hole; 202. Locking internal thread; 3. Outlet pipe; 301. Fixed external thread; 4. Water-absorbing material; 5. Filter media section; 501. First filter media; 502. Second filter media; 503. Third filter media; 504. Isolation net. Detailed Implementation
[0037] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0038] This utility model provides, for example Figure 1-4 As shown:
[0039] Example 1,
[0040] A recyclable drainage device for foundation pit slope includes: a drainage pipe body 1, a drilling assembly, a water inlet assembly, and a water outlet assembly;
[0041] It should be noted that the main body of the drainage pipe 1 is used to collect water in the slope soil. The main body of the drainage pipe 1 is made of stainless steel. The water outlet component is located at the other end of the main body of the drainage pipe 1 and is used for drainage of the main body of the drainage pipe 1.
[0042] Specifically, the drilling assembly includes a drilling sleeve 2, which is disposed at one end of the drain pipe body 1, and a fixing part for fixing the drilling sleeve 2 is provided at the connection between the drain pipe body 1 and the drilling sleeve 2.
[0043] It should be noted that the drill sleeve 2 is set in a conical shape. The conical drill sleeve 2 is used to reduce the insertion resistance. The drill sleeve 2 is made of stainless steel. The fixing part includes: locking external thread 103 and locking internal thread 202.
[0044] Specifically, the locking external thread 103 is located on the outside of the drain pipe body 1, and the locking internal thread 202 is located on the inner wall of the drill sleeve 2. The locking internal thread 202 is used to lock and fix the external thread 103. The drill sleeve 2 and the drain pipe body 1 are threadedly fixed by the locking internal thread 202 for locking the external thread 103.
[0045] It should be noted that the water inlet assembly includes an opening portion disposed on the outside of the drain pipe body 1 and the drilling sleeve 2. The opening portion is used for water inlet of the drain pipe body 1 and the drilling sleeve 2. The inner cavity of the drain pipe body 1 and the drilling sleeve 2 is provided with a filter material portion 5 for isolating soil.
[0046] Specifically, the opening includes: a first water inlet 201, a second water inlet 101, and water-absorbing material 4;
[0047] It should be noted that multiple first water inlets 201 are arranged around the outside of the drilling sleeve 2, and multiple second water inlets 101 are arranged around the outside of the drain pipe body 1. The water-absorbing material 4 is disposed in the inner cavity of one end of the drain pipe body 1 and the inner cavity of the drilling sleeve 2.
[0048] Specifically, both the first water inlet hole 201 and the second water inlet hole 101 are circular holes, and the water-absorbing material 4 is a porous fiber material. The water-absorbing material 4 fills and submerges the first water inlet hole 201 and the second water inlet hole 101, preventing soil particles from entering the main body of the drain pipe 1.
[0049] Furthermore, the filter media 5 includes: a first filter media 501, a second filter media 502, a third filter media 503, and a separator 504;
[0050] It should be noted that the first filter material 501 is disposed in the inner cavity of the drain pipe body 1, the second filter material 502 is disposed on the side of the first filter material 501 away from the drilling sleeve 2, the third filter material 503 is disposed on the side of the second filter material 502 away from the first filter material 501, and multiple isolation nets 504 are disposed in the inner cavity of the drain pipe body 1.
[0051] Specifically, the isolation net 504 is made of steel wire mesh, which is in close contact with the inner wall of the main body 1 of the drain pipe. There are four isolation nets 504. The first filter material 501 is clay ceramsite with a particle size range of 5-8 mm. The second filter material 502 is shale ceramsite with a particle size range of 3-6 mm. The third filter material 503 is fly ash ceramsite with a particle size range of 2-4 mm. The isolation nets 504 are set on the opposite sides of the first filter material 501, the second filter material 502 and the third filter material 503. One of the isolation nets 504 is set on the opposite side of the water-absorbing material 4 and the first filter material 501.
[0052] Example 2,
[0053] A water discharge component is applied to the recyclable drainage device for the foundation pit slope in Embodiment 1;
[0054] Specifically, the water outlet assembly includes: water outlet pipe 3 and connectors;
[0055] It should be noted that the end of the outlet pipe 3 is inserted into the middle of the drain pipe body 1, and the connector is set at the intersection of the outlet pipe 3 and the drain pipe body 1. The connector is used to fix the position of the outlet pipe 3.
[0056] Specifically, the connector includes a fixed external thread 301 and a fixed internal thread 102;
[0057] It should be noted that the external fixing thread 301 is located on the outside of the outlet pipe 3, and the internal fixing thread 102 is located on the inner wall of the other end of the drain pipe body 1.
[0058] Specifically, the fixed internal thread 102 is used to engage and fix the fixed external thread 301. The water outlet pipe 3 and the drain pipe body 1 are connected by the fixed external thread 301 and the fixed internal thread 102. The isolation net 504 on the side of the third filter material 503 away from the second filter material 502 prevents the third filter material 503 from leaking out.
[0059] In actual use, the user inserts the recyclable drainage device of the foundation pit slope into the positioning point of the foundation pit slope. The drilling sleeve 2 can be used to achieve quick insertion. After insertion, wait for the foundation pit slope surface to be sprayed with concrete protection. After the foundation pit slope project is completed, use a cork hammer to knock and loosen the recyclable drainage device of the foundation pit slope for recycling. When it is necessary to reuse the recyclable drainage device of the foundation pit slope, new filter media can be replaced according to the actual situation.
[0060] Liquid water in the soil enters the main body of the drainage pipe 1 through the opening on the outside of the drilling sleeve 2. The filter material 5 intercepts the soil particles in the water, preventing the soil particles from being discharged out of the main body of the drainage pipe 1 with the water. This design uses the opening and the filter material 5 to intercept the soil, avoiding soil and water loss at the insertion point of the drainage pipe 1 on the slope.
[0061] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A foundation pit slope recyclable drainage device, characterized in that, include: Drainage pipe body (1), the drainage pipe body (1) is used to collect water in the slope soil; The drilling assembly includes a drilling sleeve (2), which is disposed at one end of the drain pipe body (1). A fixing part for fixing the drilling sleeve (2) is provided at the connection between the drain pipe body (1) and the drilling sleeve (2). The water inlet assembly includes an opening portion disposed on the outside of the drain pipe body (1) and the drilling sleeve (2), the opening portion being used for water inlet of the drain pipe body (1) and the drilling sleeve (2), and the inner cavity of the drain pipe body (1) and the drilling sleeve (2) being provided with a filter material portion (5) for isolating soil. A water outlet assembly is provided at the other end of the drain pipe body (1) and is used for draining water from the drain pipe body (1).
2. The excavated slope drain according to claim 1, wherein, The fixing part includes: A locking external thread (103) is provided on the outside of the drain pipe body (1); The locking internal thread (202) is provided on the inner wall of the drill sleeve (2) and is used to lock and fix the external thread (103).
3. The foundation pit slope recyclable drainage device according to claim 2, characterized in that, The opening portion includes: First water inlet (201), a plurality of first water inlets (201) are formed around the outside of the drill sleeve (2); Second water inlet (101), a plurality of second water inlets (101) are arranged around the outside of the drain pipe body (1); Water-absorbing material (4) is placed in the inner cavity of one end of the main body (1) of the drain pipe and the inner cavity of the drilling sleeve (2).
4. The recyclable drainage device for foundation pit slopes according to claim 3, characterized in that, The drill sleeve (2) is configured to be conical, and the conical drill sleeve (2) is used to reduce the insertion resistance.
5. The foundation pit slope recyclable drainage device according to claim 1, characterized in that, The filter media section (5) includes: The first filter material (501) is disposed in the inner cavity of the drain pipe body (1); The second filter material (502) is disposed on the side of the first filter material (501) away from the drill sleeve (2); A third filter material (503) is disposed on the side of the second filter material (502) away from the first filter material (501); Isolation nets (504), multiple isolation nets (504) are disposed in the inner cavity of the drain pipe body (1), and the isolation nets (504) are used to separate the first filter material (501), the second filter material (502) and the third filter material (503).
6. The foundation pit slope recyclable drainage device according to claim 5, characterized in that, The water outlet assembly includes: The outlet pipe (3) is inserted into the middle of the drain pipe body (1) at its end; A connector is provided at the intersection of the outlet pipe (3) and the drain pipe body (1), and the connector is used to fix the position of the outlet pipe (3).
7. A recyclable drainage device for foundation pit slopes according to claim 6, characterized in that, The connector includes: A fixed external thread (301) is provided on the outside of the water outlet pipe (3); A fixed internal thread (102) is provided on the inner wall of the other end of the drain pipe body (1), and the fixed internal thread (102) is used to engage and fix the fixed external thread (301).