Pit leakage stoppage method
By setting up drainage pipes in the water collection pit and pouring materials such as fast-drying cement, anti-seepage micro-expanding concrete, etc., a closed layer is formed, which solves the problem of poor leakage and leakage plugging effect in the water collection pit, and achieves efficient leakage plugging effect.
Patent Information
- Application Number
- CN202411826557.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-12
- Publication Date
- 2025-03-14
AI Technical Summary
The basement water collection pit is easily affected by clay foundation during construction, which leads to difficulties in supporting the mold and difficulty in ensuring the quality of the bottom plate casting, which in turn causes leakage problems and the leakage plugging effect of the existing technology is poor.
By vertically setting up drainage pipes in the collecting pit to remove accumulated water, removing silt at the bottom of the pit, pouring two layers of fast-drying cement to form a fast sealing layer, and erecting steel bar layers and pouring anti-seepage micro-expanded concrete to form a sealing layer.
It quickly eliminates water accumulation in the water collecting pit, forms a solid sealing layer, enhances structural strength and sealing effect, and significantly improves the leakage plugging effect.
Smart Images
Figure CN119615913A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of building construction, and in particular to a method for plugging leakage in a sump. Background Art
[0002] Since the basement sump is deeper than the large surface of the foundation pit, the sump is difficult to support during the excavation and pouring of the bottom plate due to the influence of the clay foundation, and the pouring quality of the sump bottom plate is difficult to ensure. After the large surface of the basement bottom plate is completed, the bottom plate of the sump is damaged by the water pressure, which leads to leakage in the sump.
[0003] The existing sump leakage repair scheme generally adopts chemical grouting to stop the leakage, but the grouting material is easy to age and when there are many leakage points, water may seep from other weak parts of the concrete after grouting at one leakage point. Summary of the invention
[0004] In order to overcome the defects of the prior art, a method for plugging leakage in a sump is provided to solve the problem that the existing method for repairing leakage in a sump has poor plugging effect.
[0005] In order to achieve the above object, a method for plugging leakage in a sump is provided, comprising the following steps:
[0006] A drainage pipe is vertically arranged in the sump to discharge the accumulated water in the sump out of the sump;
[0007] Removing silt from the bottom of the sump;
[0008] Casting quick-drying cement at the bottom of the sump, wherein the quick-drying cement is coated on the lower end of the drainage pipe;
[0009] After the quick-drying cement poured first has hardened, the drainage pipe is removed;
[0010] Pouring post-cast quick-drying cement into the hole after the drainage pipe is removed, and the post-cast quick-drying cement and the pre-cast quick-drying cement are solidified to form a quick-sealing layer;
[0011] A steel bar layer is installed on the quick-sealing layer, and ends of the steel bars of the steel bar layer are implanted into the pit wall of the sump;
[0012] The anti-seepage micro-expansion concrete is poured on the quick-sealing layer, and the anti-seepage micro-expansion concrete is coated on the steel bar layer to solidify and form a closed layer.
[0013] Furthermore, the drainage pipe is arranged at the plane center of the sump.
[0014] Furthermore, the implantation depth of the steel bar is 10d.
[0015] Furthermore, the thickness of the sealing layer is greater than 20 cm.
[0016] The beneficial effect of the present invention is that the water collection pit leakage plugging method of the present invention can quickly drain the water in the water collection pit through the drainage pipe, and can drain the water in the water collection pit before the quick sealing layer is formed, and after the quick sealing layer, a sealing layer is formed on the quick sealing layer through the anti-seepage micro-expansion concrete, and the steel bar layer in the sealing layer is used to strengthen the structural strength and sealing effect of the sealing layer. On the other hand, the anti-seepage micro-expansion concrete can improve the sealing effect. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Other features, objects and advantages of the present application will become more apparent by reading the detailed description of non-limiting embodiments made with reference to the following drawings:
[0018] Figures 1 to 5 It is a schematic diagram of the steps of a method for plugging leakage in a sump according to an embodiment of the present invention. DETAILED DESCRIPTION
[0019] The present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the relevant invention, rather than to limit the invention. It is also necessary to explain that, for ease of description, only the parts related to the invention are shown in the accompanying drawings.
[0020] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.
[0021] Reference Figures 1 to 5 As shown, the present invention provides a method for plugging leakage in a sump, comprising the following steps:
[0022] S1. A drainage pipe 2 is vertically arranged in the sump 1 to discharge the accumulated water in the sump 1 out of the sump 1.
[0023] As a preferred embodiment, the drain pipe 2 is arranged at the plane center of the sump 1 .
[0024] Install a drainage pipe at the center of the sump and connect a pump to pump water to ensure that there is little water outside the center of the sump and that construction conditions are met.
[0025] S2. Clear the sludge 11 at the bottom of the sump 1.
[0026] Clean the silt at the bottom of the sump according to the designed elevation of the bottom surface of the sump.
[0027] S3, pouring quick-drying cement 3 at the bottom of the sump 1, and pouring quick-drying cement 3 to cover the lower end of the drainage pipe 2.
[0028] Quick-drying cement is poured outside the range of the drainage pipe of the sump. The finished surface elevation of the quick-drying cement is 20 cm lower than the designed elevation of the bottom surface of the sump.
[0029] At this time, pouring quick-drying cement first does not block the opening of the drain pipe, so the drain pipe still has a drainage function.
[0030] S4. After the quick-drying cement 3 is poured and hardened, the drainage pipe 2 is removed.
[0031] S5, pouring the post-cast quick-drying cement 4 into the hole after the drainage pipe 2 is removed, and the post-cast quick-drying cement 4 and the pre-cast quick-drying cement 3 are solidified to form a quick-sealing layer.
[0032] After the quick-drying cement outside the sump drainage pipe has hardened, pull out the sump drainage pipe and inject quick-drying cement into the holes left in the drainage pipe until the hole is 20 cm below the designed elevation of the sump bottom plate.
[0033] S6, a steel bar layer 5 is set up on the quick-sealing layer, and the ends of the steel bars of the steel bar layer 5 are implanted into the pit wall of the sump 1.
[0034] As a preferred implementation, the implantation depth of the steel bars is 10d.
[0035] After the quick-drying cement 20cm below the design elevation of the bottom of the sump has completely hardened, embed rebars on the side walls of the sump and tie the steel layer (surface layer steel bars). The embedded rebar specifications are the same as the sump bottom plate steel bar specifications in the design drawings, and the embedded rebar depth is 10d.
[0036] S1. Pour the anti-seepage micro-expansion concrete 6 on the quick-sealing layer, and the anti-seepage micro-expansion concrete 6 is coated on the steel bar layer 5 to solidify and form a sealing layer.
[0037] As a preferred implementation, the thickness of the sealing layer is greater than 20 cm. The impermeable micro-expansive concrete is C50 high-strength impermeable micro-expansive concrete.
[0038] A 20cm thick C50 high-strength, anti-seepage, slightly expansive concrete surface layer is poured to reach the design elevation of the sump bottom plate, and the sump bottom plate achieves a closed effect.
[0039] The sump leakage plugging method of the present invention can quickly drain the water in the sump through a drainage pipe, and can drain the water in the sump before the quick sealing layer is formed. After the quick sealing layer, a sealing layer is formed on the quick sealing layer through the anti-seepage micro-expansion concrete, and the steel bar layer in the sealing layer is used to strengthen the structural strength and sealing effect of the sealing layer. On the other hand, the anti-seepage micro-expansion concrete can improve the sealing effect.
[0040] The above description is only a preferred embodiment of the present application and an explanation of the technical principles used. Those skilled in the art should understand that the scope of the invention involved in the present application is not limited to the technical solution formed by a specific combination of the above technical features, but should also cover other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the inventive concept. For example, the above features are replaced with (but not limited to) technical features with similar functions disclosed in the present application.
Claims
1. A method for plugging leakage in a sump, characterized in that: The following steps are involved: A drainage pipe is vertically arranged in the sump to discharge the accumulated water in the sump out of the sump; Removing silt from the bottom of the sump; Casting quick-drying cement at the bottom of the sump, wherein the quick-drying cement is coated on the lower end of the drainage pipe; After the quick-drying cement poured first has hardened, the drainage pipe is removed; Pouring post-cast quick-drying cement into the hole after the drainage pipe is removed, and the post-cast quick-drying cement and the pre-cast quick-drying cement are solidified to form a quick-sealing layer; A steel bar layer is installed on the quick-sealing layer, and ends of the steel bars of the steel bar layer are implanted into the pit wall of the sump; The anti-seepage micro-expansion concrete is poured on the quick-sealing layer, and the anti-seepage micro-expansion concrete is coated on the steel bar layer to solidify and form a closed layer.
2. The method for plugging leakage in a sump according to claim 1, characterized in that: The drainage pipe is arranged at the plane center of the sump.
3. The method for plugging leakage in a sump according to claim 1, characterized in that: The implantation depth of the steel bar is 10d.
4. The method for plugging leakage in a sump according to claim 1, characterized in that: The thickness of the sealing layer is greater than 20 cm.