Permanent underground water drainage plugging anti-seepage structure
By designing a permanent groundwater drainage and sealing anti-leakage structure including drainage pipes, drainage pipes, sealing plates, water stop rings and water pumps, the problems of long construction time, many processes and high costs in underground structure construction are solved, and high quality bottom plate construction and waterproof and anti-leakage effects are achieved.
Patent Information
- Application Number
- CN202421212879.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-30
- Publication Date
- 2025-02-28
- Estimated Expiration
- 2034-05-30
AI Technical Summary
In the construction of existing underground structures, the drainage method has a long construction time, many processes and high costs, which leads to frequent leakage quality problems of the bottom plate, affecting the construction progress and increasing project costs.
A permanent groundwater drainage sealing and anti-seepage structure is designed, including drainage pipes, drainage pipes, sealing plates, water stop rings and water pumps. The groundwater is drained into the drainage pipe through the drainage pipe, and is centrally pumped and discharged through the water pump. Combined with the water stop rings and water impermeable membranes and other structures, four water barriers are formed to ensure the waterproof and anti-seepage performance of the bottom plate.
It realizes effective drainage and centralized drainage of groundwater, ensures the dry working environment for bottom plate construction, improves the quality of bottom plate casting and waterproof and anti-seepage performance, reduces construction processes and cycles, and reduces construction costs.
Smart Images
Figure CN222541507U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of underground engineering, in particular to a permanent underground water drainage, plugging and anti-leakage structure. Background Art
[0002] During the construction of caissons, retaining wall wells or similar underground structures, it is necessary to cast the bottom plate. The groundwater has a great influence on the concrete pouring quality of the bottom plate. The deeper the foundation pit, the greater the influence of groundwater on the construction quality of the bottom plate. Quality problems such as bottom plate leakage often occur, and the leakage parts of the bottom plate need to be repaired later, which increases the project cost and affects the subsequent construction progress.
[0003] In the prior art, groundwater is often discharged by setting up blind ditches and water collection wells to facilitate the concrete pouring of the base plate. However, the construction time of blind ditches and water collection wells is long, the construction process is many, the cost is high, and it is easy to affect the construction progress. Therefore, it is necessary to provide a permanent groundwater drainage and plugging anti-leakage structure that can solve the problems of long construction time, many processes and high cost required for drainage methods in underground structure construction in the prior art. Summary of the invention
[0004] The utility model aims to provide a permanent groundwater drainage and plugging anti-leakage structure, which can solve the problems of long construction time, many processes and high cost required for drainage methods in underground structure construction in the prior art.
[0005] The utility model is achieved in this way:
[0006] A permanent groundwater drainage, plugging and anti-leakage structure comprises a drainage pipe, a drainage pipe, a first sealing plate, a first water-stop ring and a water pump; the bottom of the drainage pipe is sealed and connected to the first sealing plate, the drainage pipe is pre-buried in the bottom plate and the permeable layer below the bottom plate, the top surface of the drainage pipe is flush with the top surface of the bottom plate, and the bottom surface of the drainage pipe is flush with the bottom surface of the permeable layer; one end of a plurality of drainage pipes are respectively connected to the drainage pipe, and the plurality of drainage pipes are arranged in the permeable layer, so that the permeable layer is connected to the drainage pipe through the drainage pipe; the first water-stop ring is circumferentially arranged on the outer wall of the drainage pipe and is located above the drainage pipe, so that the drainage pipe is sealed and connected to the bottom plate through the first water-stop ring to form a permanent integrated structure, and the water pump is arranged in the drainage pipe.
[0007] A plurality of drainage holes are formed at intervals on the wall of the drainage tube located in the water-permeable layer, and the portion of the drainage tube located in the water-permeable layer is wrapped by a filter net.
[0008] The end of the drainage pipe located in the drainage pipe is connected to the second sealing plate through a flange, so that the second sealing plate can seal the end of the drainage pipe located in the drainage pipe.
[0009] A second water stop ring is circumferentially arranged on the inner wall of the drainage pipe, and concrete is filled in the drainage pipe so that the drainage pipe, concrete and the bottom plate form a permanent integrated structure.
[0010] A roughened surface is formed at the junction of the construction well wall and the bottom plate, and a waterstop is provided at the junction of the bottom plate and the construction well wall, one end of the waterstop is buried in the bottom plate, and the other end of the waterstop is buried in the construction well wall.
[0011] A cushion layer is constructed at the bottom of the base plate, and a waterproof membrane is laid between the cushion layer and the permeable layer. The waterproof membrane is folded upward to the outer wall of the drainage pipe at the drainage pipe, and the waterproof membrane is folded upward at the wall of the construction well to connect with the water stop belt.
[0012] Compared with the prior art, the utility model has the following beneficial effects:
[0013] 1. The utility model is provided with a drainage pipe and a drainage pipe. The groundwater in the permeable layer is drained into the drainage pipe through the drainage pipe, and the groundwater is centrally pumped out by a water pump to ensure that the groundwater level meets the construction requirements during the base plate construction, and a dry working environment is provided for the base plate construction, thereby improving the base plate casting quality; at the same time, the drainage pipe and the drainage pipe can be made of steel pipes and buried in underground structures such as the base plate as a permanent structure to form an integral structure, which greatly reduces the possibility of leakage of the base plate in the later stage, and compared with traditional drainage ditches, water collection wells and other structures, the construction process is reduced, the construction period is shortened, and the construction cost is reduced.
[0014] 2. Since the utility model is provided with the first waterstop ring, the second waterstop ring, the impermeable membrane and the waterstop strip, after the base plate is poured and the drainage pipe is sealed, the first waterstop ring, the second waterstop ring, the impermeable membrane and the waterstop strip provide four water barriers for the base plate, thereby improving the groundwater waterproof and anti-seepage performance of the base plate and greatly reducing the possibility of leakage of the base plate in the later stage. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 It is a top view of the permanent groundwater drainage, plugging and anti-leakage structure of the utility model;
[0016] Figure 2 This is the front view of the permanent groundwater drainage, plugging and anti-leakage structure of the utility model;
[0017] Figure 3 It is a construction schematic diagram of the permanent groundwater drainage, plugging and anti-leakage structure of the utility model;
[0018] Figure 4 The utility model is a partial schematic diagram of the construction completion of the permanent groundwater drainage, plugging and anti-leakage structure.
[0019] In the figure, 1 is a drainage pipe, 2 is a drainage pipe, 201 is a drainage hole, 202 is a flange, 203 is a second sealing plate, 3 is a first sealing plate, 4 is a first water stop ring, 5 is a water pump, 6 is a permeable layer, 7 is a bottom plate, 701 is a cushion layer, 8 is concrete, 9 is a second water stop ring, 10 is an impermeable membrane, 11 is a construction well wall, 12 is a water stop belt, and 13 is a plain concrete bottom seal. DETAILED DESCRIPTION
[0020] The utility model is further described below in conjunction with the accompanying drawings and specific embodiments.
[0021] Please see attached Figure 1 To Attachment Figure 3 A permanent groundwater drainage, plugging and anti-leakage structure comprises a drainage pipe 1, a drainage pipe 2, a first sealing plate 3, a first water-stopping ring 4 and a water pump 5; the bottom of the drainage pipe 1 is sealed and connected with the first sealing plate 3, the drainage pipe 1 is pre-buried in the bottom plate 7 and the water-permeable layer 6 thereunder, the top surface of the drainage pipe 1 is flush with the top surface of the bottom plate 7, and the bottom surface of the drainage pipe 1 is flush with the bottom surface of the water-permeable layer 6; one ends of a plurality of drainage pipes 2 are respectively connected with the drainage pipe 1, and a plurality of drainage pipes 2 are arranged in the water-permeable layer 6, so that the water-permeable layer 6 is connected with the drainage pipe 1 through the drainage pipe 2; the first water-stopping ring 4 is circumferentially arranged on the outer wall of the drainage pipe 1 and is located above the drainage pipe 2, so that the drainage pipe 1 is sealed and connected with the bottom plate 7 through the first water-stopping ring 4 to form a permanent integrated structure, and the water pump 5 is arranged in the drainage pipe 1.
[0022] Preferably, the drainage pipe 1 can be a rigid waterproof pipe such as a steel pipe, which is directly buried in the base plate 7 and the permeable layer 6. During construction, a water pump 5 can be installed to drain water to control the groundwater level in the construction well. After the construction of the base plate 7 is completed and reaches its service life, it can be filled with concrete to form a permanent structure as a part of the base plate 7.
[0023] The top and bottom of the drain pipe 1 are flush with the top of the base plate 7 and the bottom of the permeable layer 6 respectively, so that the drain pipe 1 can be buried in the base plate 7 and the permeable layer 6 as part of a permanent structure. The connection reliability and waterproof and anti-seepage performance of the connection between the base plate 7 and the drain pipe 1 are ensured by the setting of the first water stop ring 4.
[0024] The first sealing plate 3 can be made of steel plate and is used to block the bottom of the drainage pipe 1 so that groundwater can only enter the drainage pipe 1 through the drainage pipe 2. The permeable layer 6 and the drainage pipe 2 can be used to introduce groundwater into the drainage pipe 1, so that the groundwater in the drainage pipe 1 is pumped out by the water pump 5 to achieve the purpose of controlling the groundwater level, avoiding the influence of groundwater on the pouring construction of the bottom plate 7, ensuring the dry working environment and pressure-free construction of the bottom plate 7, and improving the concrete pouring and molding quality of the bottom plate 7.
[0025] Please see attached Figure 1 and attached Figure 2The drainage tube 2 is located in the water-permeable layer 6 and has a plurality of drainage holes 201 formed at intervals on its wall, and the portion of the drainage tube 2 located in the water-permeable layer 6 is wrapped by a filter net (not shown in the figure).
[0026] The number, arrangement spacing, and aperture of the drainage holes 201 can be adaptively adjusted according to actual drainage needs. The drainage holes 201 are used to guide groundwater in the permeable layer 6 into the drainage pipe 2, and then discharge it through the water pump 5 in the drainage pipe 1. The filter net is used to wrap the outer wall and end of the drainage pipe 2 to prevent sediment from entering the drainage pipe 2 and clogging the drainage pipe 2.
[0027] Please see attached Figure 4 The end of the drainage pipe 2 located in the drain pipe 1 is connected to the second sealing plate 203 through the flange 202, so that the second sealing plate 203 can close the end of the drainage pipe 2 located in the drain pipe 1.
[0028] When the drainage pipe 1 is blocked at a later stage, the second sealing plate 203 can be installed to one end of the drainage pipe 2 located inside the drainage pipe 1 through the flange 202 and bolts to block the drainage pipe 2 and prevent groundwater from entering the drainage pipe 1 through the drainage pipe 2, thereby facilitating the pouring and blocking of the drainage pipe 1.
[0029] Please see attached Figure 1 To Attachment Figure 4 A second water stop ring 9 is circumferentially provided on the inner wall of the drainage pipe 1, and concrete 8 is filled in the drainage pipe 1, so that the drainage pipe 1 and the concrete 8 form a permanent integrated structure with the bottom plate 7.
[0030] The concrete 8 is used to fill and seal the drain pipe 1 . After the concrete 8 is poured, the second water stop ring 9 is used to improve the connection reliability between the drain pipe 1 and the bottom plate 7 , and at the same time improve the waterproof and anti-seepage performance of the drain pipe 1 .
[0031] Please see attached Figure 3 A roughened surface (not shown in the figure) is formed at the junction of the construction well wall 11 and the bottom plate 7, and a waterstop 12 is provided at the junction of the bottom plate 7 and the construction well wall 11, one end of the waterstop 12 is buried in the bottom plate 7, and the other end of the waterstop 12 is buried in the construction well wall 11.
[0032] Roughening the inner wall of the construction well wall 11 at the high point where the bottom plate 7 is cast can improve the bonding strength between the concrete of the bottom plate 7 and the construction well wall 11. At the same time, providing a water stop 12 can improve the waterproof and anti-seepage performance of the connection between the construction well wall 11 and the bottom plate 7.
[0033] Please see attached Figure 3A cushion layer 701 is constructed at the bottom of the base plate 7, and a waterproof membrane 10 is laid between the cushion layer 701 and the permeable layer 6. The waterproof membrane 10 is folded upward at the drainage pipe 1 to the outer wall of the drainage pipe 1, and the waterproof membrane 10 is folded upward at the construction well wall 11 to connect with the water stop belt 12.
[0034] The waterproof membrane 10 can play a waterproof role and reduce the impact of groundwater on the cushion layer 701 and the bottom plate 7. The waterproof membrane 10 is laid in an upward folded manner at the junction with the drainage pipe 1 and the construction well wall 11, so as to improve the waterproof and anti-seepage performance of the junction between the bottom plate 7 and the drainage pipe 1 and the construction well wall 11.
[0035] Please see attached Figure 1 To Attachment Figure 4 , the construction method and working process of the utility model are:
[0036] A steel pipe made of Q235B and with a size of DN600 to DN1200 is used as the drainage pipe 1. The area of the drainage pipe 1 is determined according to the area of the base plate 7 and the adaptability of the groundwater volume. The length of the drainage pipe 1 is determined according to the top elevation of the base plate 7 and the bottom elevation of the permeable layer 6.
[0037] A plasma cutting machine is used to open three through holes with a diameter of 100 mm at intervals of 120 degrees at the lower part of the wall of the drainage pipe 1. One end of the three drainage pipes 2 is inserted into the drainage pipe 1 through the three through holes, and the three drainage pipes 2 are fixed to the inner and outer walls of the drainage pipe 1 by full welding. A steel pipe with a material of Q235B and a size of DN100 is used as the drainage pipe 2. The length of the drainage pipe 2 is preferably extended to the edge of the bottom plate 7, and can be adaptively adjusted according to actual use requirements.
[0038] A steel plate is welded at the bottom of the drain pipe 1 as a first sealing plate 3 to seal the bottom of the drain pipe 1. A first water stop ring 4 is welded on the outer wall of the drain pipe 1, and a second water stop ring 9 is welded on the inner wall of the drain pipe 1. The first water stop ring 4 and the second water stop ring 9 can be staggered in height to ensure the anti-seepage effect at the drain pipe 1.
[0039] The welding flange 202 is fully welded on one end of the three drainage pipes 2 located in the drainage pipe 1, so as to facilitate the later closure of the drainage pipes 2. The three drainage pipes 2 are inserted into the permeable layer 6 at intervals of 120°. The parts of the three drainage pipes 2 located in the permeable layer 6 are covered with φ30mm drainage holes 201 in a plum blossom shape. At the same time, the wire mesh is used as a filter net to wrap the part of the drainage pipe 2 located in the permeable layer 6, ensuring that the filter net completely wraps all the drainage holes 201 and a section of the end of the drainage pipe 2 located in the permeable layer 6, preventing mud and sand from entering the drainage hole 201 and blocking the drainage hole 201, thereby ensuring the drainage effect of the drainage hole 201.
[0040] After the plain concrete bottom seal 13 of the bottom of the construction well is completed by conventional construction technology, a crushed stone layer is laid on the plain concrete bottom seal 13 as a permeable layer 6, and the bottom of the drainage pipe 1 is buried in the permeable layer 6, so that the bottom of the drainage pipe 1 fits on the plain concrete bottom seal 13, and the top surface elevation of the drainage pipe 1 is consistent with the top surface elevation of the bottom plate 7.
[0041] The water pump 5 is placed in the drainage pipe 1. The groundwater enters the drainage pipe 2 through the permeable layer 6, the drainage hole 201 and the end of the drainage pipe 2, and then flows into the drainage pipe 1. The water in the drainage pipe 1 is discharged by the water pump 5, so that the water level in the construction well is kept below the surface of the bottom plate 7 during the construction process to meet the construction requirements. By draining and pumping out the groundwater, the bottom plate 7 is constructed in a dry working environment, and the bottom plate 7 is in a pressure-free state, eliminating the adverse effects of groundwater on the concrete pouring of the bottom plate 7, improving the construction working environment, and thus greatly improving the molding quality of the bottom plate 7 concrete.
[0042] After the impermeable membrane 10 is fully spread on the permeable layer 6 as a water barrier, the cushion layer 701 and the bottom plate 7 can be cast. The cushion layer 701 and the bottom plate 7 are constructed using conventional processes, which will not be described here. The bottom plate 7 is usually a reinforced concrete structure, and reinforced steel bars and steel bar densification can be used around the drainage pipe 1 as reinforcement to ensure the overall structural strength and local structural strength of the bottom plate 7. At the same time, the drainage pipe 1 can be welded to the steel bars in the bottom plate 7 to fix the drainage pipe 1 to prevent the drainage pipe 1 from displacement when the bottom plate 7 is cast.
[0043] When pouring the bottom plate 7, the joint surface between the construction well wall 11 and the bottom plate 7 is roughened to form a roughened surface, and a water stop strip 12 is set at the joint surface between the construction well wall 11 and the bottom plate 7, so that after the concrete of the bottom plate 7 is poured, the roughened surface is used to improve the firmness of the connection between the bottom plate 7 and the construction well, and the water stop strip 12 is used to improve the waterproof and anti-seepage effect of the joint surface between the bottom plate 7 and the construction well wall 11, which serves as a second waterproof barrier. The first water stop ring 4 connects the bottom plate 7 and the drainage pipe 1 into a whole, and the first water stop ring 4 serves as a third waterproof barrier.
[0044] Preferably, after the inner wall of the construction well wall 11 is roughened to expose the steel bars in the construction well wall 11, the steel bars of the bottom plate 7 can be welded to the steel bars in the construction well wall 11 into a whole, thereby ensuring the integrity of the connection between the bottom plate 7 and the construction well wall 11 and improving the anti-floating performance of the bottom plate 7.
[0045] After the concrete pouring of the bottom plate 7 is completed and reaches the age, the water in the drainage pipe 1 is drained by the water pump 5, and the second sealing plate 203 is used to seal one end of the drainage pipe 2 located in the drainage pipe 1 through the flange 202 to prevent groundwater from continuing to enter the drainage pipe 1.
[0046] Take out the water pump 5, pour micro-expansive concrete in the drain pipe 1 to form concrete 8, and connect the concrete 8 to the drain pipe 1 through the second water stop ring 9 to form an integrated structure. The second water stop ring 9 serves as the fourth water barrier. The drain pipe 1 is connected to the bottom plate 7 as a whole. Except for the water pump 5, the entire device is buried in the bottom plate 7 and the permeable layer 6 as a permanent structure.
[0047] The above are only preferred embodiments of the present invention and are not intended to limit the protection scope of the present invention. Therefore, any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.
Claims
1. A permanent groundwater drainage and plugging anti-leakage structure, characterized by: The invention comprises a drainage pipe (1), a drainage pipe (2), a first sealing plate (3), a first water stop ring (4) and a water pump (5); the bottom of the drainage pipe (1) is sealed and connected to the first sealing plate (3); the drainage pipe (1) is pre-buried in a bottom plate (7) and a water permeable layer (6) below the bottom plate; the top surface of the drainage pipe (1) is flush with the top surface of the bottom plate (7); the bottom surface of the drainage pipe (1) is flush with the bottom surface of the water permeable layer (6); one end of a plurality of drainage pipes (2) is respectively connected to the drainage pipe (1); the plurality of drainage pipes (2) are arranged in the water permeable layer (6), so that the water permeable layer (6) is connected to the drainage pipe (1) through the drainage pipe (2); the first water stop ring (4) is circumferentially arranged on the outer wall of the drainage pipe (1) and is located above the drainage pipe (2), so that the drainage pipe (1) is sealed and connected to the bottom plate (7) through the first water stop ring (4) to form a permanent integrated structure; the water pump (5) is arranged in the drainage pipe (1).
2. The permanent groundwater drainage and plugging anti-leakage structure according to claim 1 is characterized by: A plurality of drainage holes (201) are formed at intervals on the wall of the drainage tube (2) located inside the water-permeable layer (6), and the portion of the drainage tube (2) located inside the water-permeable layer (6) is wrapped by a filter net.
3. The permanent groundwater drainage and plugging anti-leakage structure according to claim 1 or 2 is characterized in that: One end of the drainage pipe (2) located in the drainage pipe (1) is connected to the second sealing plate (203) via a flange (202), so that the second sealing plate (203) can seal the end of the drainage pipe (2) located in the drainage pipe (1).
4. The permanent groundwater drainage and plugging anti-leakage structure according to claim 3 is characterized by: A second water stop ring (9) is circumferentially provided on the inner wall of the drainage pipe (1), and concrete (8) is filled in the drainage pipe (1), so that the drainage pipe (1), the concrete (8) and the bottom plate (7) form a permanent integrated structure.
5. The permanent groundwater drainage and plugging anti-leakage structure according to claim 1 or 4, characterized in that: A roughened surface is formed at the junction of the construction well wall (11) and the bottom plate (7), and a water stop belt (12) is provided at the junction of the bottom plate (7) and the construction well wall (11), one end of the water stop belt (12) is buried in the bottom plate (7), and the other end of the water stop belt (12) is buried in the construction well wall (11).
6. The permanent groundwater drainage and plugging anti-leakage structure according to claim 5 is characterized by: A cushion layer (701) is constructed at the bottom of the base plate (7), and a waterproof film (10) is laid between the cushion layer (701) and the water-permeable layer (6). The waterproof film (10) is folded upward at the drainage pipe (1) to the outer wall of the drainage pipe (1), and the waterproof film (10) is folded upward at the wall (11) of the construction well to connect with the water stop belt (12).