Foundation pit seepage-proofing and leakage-stopping experimental simulation device

Abstract

The utility model relates to the field of constructional engineering, in particular to a foundation pit seepage prevention and leakage stoppage experimental simulation device which comprises a base and an upper structure, the upper structure is arranged on the base, a water stop piece is arranged between the upper structure and the base, and a water inlet assembly is arranged on the base. The water outlet end of the water inlet assembly is flush with the upper surface of the base, and a water outlet hole is formed in the upper assembly. The upper structure is installed on the base in a sealed mode through the water stop piece, liquid is conveyed between the base and the upper structure through the water inlet assembly, and the quality of materials and the quality of the water stop piece are judged by observing the overflow condition between the water stop piece and the base and the water outlet condition of the water outlet hole; and manual selection of proper materials and water stop pieces is assisted.

Description

Technical Field

[0001] The present application relates to the field of construction engineering, and in particular to a foundation pit anti-seepage and leakage plugging experimental simulation device. Background Art

[0002] In the construction of deep foundation pit projects, since the construction of its maintenance structure is carried out under hidden conditions underground, the quality of the retaining structure project is uncontrollable. In areas with high groundwater levels, foundation pit leakage is called the main risk to foundation pit safety. If the foundation pit leakage is not quickly and promptly blocked, it may cause the maintenance structure to become unstable and the foundation to deform, causing a huge impact on the safety of the foundation pit and the surrounding environment, endangering people's lives and causing adverse social impacts.

[0003] The existing methods for plugging leaks in deep foundation pit projects mainly adopt the backfill method shown in the attached figure, the backfill back-jet reinforcement method, and the back-grouting reinforcement method. The implementation of the existing technology, earth backfill, jet reinforcement, grouting reinforcement and other technologies all require the assistance of large-scale construction machinery. The large-scale machinery operation and construction preparation time is relatively long, and the best time to plug the foundation pit leakage is missed; and the foundation pit leakage mostly occurs in the earth excavation stage. The ground environment of the foundation pit is complex. After the foundation soil is soaked in water, the foundation bearing capacity is reduced, the working surface is muddy, and the silt is accumulated. After the construction machinery is operated many times, the foundation surface is silted. The operating machinery cannot get close to the leakage point, and the operator is inconvenient to operate. Back grouting requires drilling holes in the ground. Since the ground is mostly concrete structure, it needs to be drilled quickly. The existing equipment is mainly imported Atlas geological drilling rigs, and the cost of drilling holes is relatively high. Grouting materials are mostly polyurethane two-component materials, and the consumption of one-time plugging materials is large and the cost is high.

[0004] Since materials have a great influence on basic anti-seepage and leakage plugging, choosing good foundation pit materials and grouting materials is of great significance for anti-seepage and leakage plugging of deep foundation pits. Utility Model Content

[0005] In order to select better foundation pit construction materials and grouting materials, the present application provides a foundation pit anti-seepage and leakage plugging experimental simulation device.

[0006] The present application provides a foundation pit anti-seepage and leakage plugging experimental simulation device adopts the following technical solution:

[0007] A foundation pit anti-seepage and leakage plugging experimental simulation device comprises a base and an upper structure, wherein the upper structure is arranged on the base, a water stop is arranged between the upper structure and the base, a water inlet assembly is arranged on the base, a water outlet end of the water inlet assembly is flush with the upper surface of the base, and a water outlet hole is opened on the upper assembly.

[0008] By adopting the above technical scheme, the upper structure is sealed and installed on the base through the water stop, and the liquid is transported between the base and the upper structure through the water inlet assembly. By observing the overflow between the water stop and the base and the water outlet of the water outlet, the quality of the material and the advantages and disadvantages of the water stop are judged, thereby assisting manual selection of suitable materials and water stop.

[0009] Optionally, the water inlet assembly includes a water tank and a water inlet pipe, one end of the water inlet pipe is arranged on the water tank, and the other end is arranged on the base, and the water outlet end of the water inlet pipe is flush with the upper surface of the base.

[0010] By adopting the above technical solution, when water is injected into the space between the base and the upper structure, the water in the water tank flows downward along the water inlet pipe, and the water flows to the space between the base and the upper structure. Water is injected through the water tank and the water inlet pipe, which facilitates the water to flow to the middle position between the base and the upper structure.

[0011] Optionally, a water inlet valve is provided on the water inlet pipe, and the water inlet valve is located between the water tank and the base.

[0012] By adopting the above technical solution, when the water tank and the water inlet pipe are filled with water, the water inlet valve on the water inlet pipe is opened. When water filling is not needed, the water inlet valve can also be closed to reduce the possibility of water still entering between the base and the upper structure along the water inlet pipe.

[0013] Optionally, a branch pipe for water outlet is provided on the water inlet pipe, and a water outlet valve is provided on the branch pipe.

[0014] By adopting the above technical solution, after the experiment, the outlet valve on the branch pipe is opened, so that the liquid between the base and the water inlet pipe flows in the opposite direction from the water inlet pipe to the branch pipe and flows out, reducing the possibility of liquid accumulation between the base and the upper structure.

[0015] Optionally, a water storage tank is provided on the upper structure, and the water outlet is located at the bottom of the water storage tank, and a plurality of the water outlets are evenly distributed.

[0016] By adopting the above technical solution, the liquid overflowing from the water outlet is accumulated in the water storage tank, thereby reducing the possibility of the liquid overflowing and flowing from the upper surface of the upper structure to the surrounding areas.

[0017] Optionally, a first lifting ring is provided on the upper structure, and two first lifting rings are symmetrically distributed, and the two first lifting rings are distributed on both sides of the water storage tank.

[0018] By adopting the above technical solution, when the upper structure needs to be moved, the rope or hook is passed through the first lifting ring to drive the upper structure to move. The installation of the first lifting ring facilitates the movement of the upper structure and the replacement of the type of water stop, thereby testing the anti-leakage effect of water stop made of different materials.

[0019] Optionally, a fixing assembly for fixing the first lifting ring is provided between the first lifting ring and the upper structure, the fixing assembly includes a fixing seat and a connecting piece, the upper structure is provided with a mounting groove, the fixing seat is provided on the upper structure and is located in the mounting groove, and the upper surface of the fixing seat is located below the upper surface of the upper structure, the connecting piece is provided on the fixing seat, the connecting piece and the fixing seat are detachably provided, and the first lifting ring is provided on the connecting piece.

[0020] By adopting the above technical solution, the first lifting ring is detachably installed on the upper structure through the fixing seat and the connecting piece. When multiple upper structures are produced and stacked together, and the connecting piece is not installed on the fixing seat, the upper structures can be stacked together relatively flatly, which is convenient for stacking the upper structures.

[0021] Optionally, the connecting member includes a connecting rod and a connecting block, the connecting rod is detachably arranged on a fixing seat, the connecting block is arranged on one end of the connecting rod away from the fixing seat, and the first lifting ring is arranged on the connecting block and is located on a side of the connecting block facing away from the connecting rod.

[0022] By adopting the above technical solution, when it is necessary to lift the superstructure, the lower end of the connecting rod is installed on the fixed seat, and the connecting block and the first lifting ring at the upper end are located above the upper surface of the superstructure. When placing the superstructure, the connecting rod is removed from the fixed seat to reduce the possibility of the connecting rod, the connecting block and the first lifting ring affecting the stacking of the superstructure.

[0023] Optionally, a locking member is provided between the connecting rod and the fixing seat to prevent the connecting rod from being separated from the fixing seat.

[0024] By adopting the above technical solution, the locking member locks the connecting rod on the fixing seat, reducing the possibility of the connecting rod detaching from the fixing seat during the lifting process, thereby reducing the possibility of the upper structure falling and cracking, thereby reducing the possibility of affecting the experimental results.

[0025] Optionally, a lifting assembly for lifting the base is provided on the base, and the lifting assembly includes a second lifting ring and a mounting rod, the mounting rod is provided on the base, and the second lifting ring is provided on an end of the mounting rod away from the base.

[0026] By adopting the above technical solution, when the placement position of the base needs to be changed, the rope or hook is placed on the second lifting ring, which makes it easier to lift the base, thereby reducing the difficulty of changing the position of the base.

[0027] In summary, the present application includes at least one of the following beneficial technical effects:

[0028] 1. Install water stoppers and water inlet components between the base and the superstructure, inject liquid into the space between the base and the superstructure through the water inlet components, observe the liquid overflow from the water outlets on the superstructure and the water stoppers, and then judge the quality of the materials and the water-stopping effect of the water stoppers, so as to reduce the possibility of liquid leakage caused by the production of deep foundation pits with inferior materials or poor water-stopping effect;

[0029] 2. By providing a water storage tank on the superstructure, the possibility of the liquid overflowing from the water outlet escaping on the upper surface of the superstructure is reduced;

[0030] 3. The first lifting ring is detachably mounted on the fixed seat through a connecting piece, which is convenient for lifting the upper structure and aligning the other side. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present application.

[0032] Figure 2 It is a schematic diagram of the structure of the water inlet assembly in the embodiment of the present application.

[0033] Figure 3 It is a schematic diagram of the structure of the base in the embodiment of the present application.

[0034] Figure 4 It is a structural schematic diagram of the upper structure of an embodiment of the present application.

[0035] Figure 5 yes Figure 4 The enlarged view of point A in the middle is used to show the structural schematic diagram of the fixed component.

[0036] Explanation of the accompanying drawings: 1. base; 2. upper structure; 21. water storage tank; 22. water outlet; 23. first lifting ring; 24. mounting groove; 3. water stop; 4. water inlet assembly; 41. water tank; 42. water inlet pipe; 421. first water inlet pipe; 422. second water inlet pipe; 423. third water inlet pipe; 424. water inlet valve; 425. branch pipe; 426. water outlet valve; 5. fixing assembly; 51. fixing seat; 52. connecting piece; 521. connecting block; 522. connecting rod; 53. locking piece; 6. lifting assembly; 61. mounting rod; 62. second lifting ring. DETAILED DESCRIPTION

[0037] The following is combined with Figures 1 to 5 This application is described in further detail.

[0038] The present application embodiment discloses a foundation pit anti-seepage and leakage plugging experimental simulation device. Figure 1 , including a base 1 and an upper structure 2, wherein the upper structure 2 is installed on the base 1 through a water stop 3.

[0039] The waterstop member 3 can be a waterstop tape, which is installed between the upper surface of the base 1 and the lower surface of the upper structure 2 to reduce the possibility of liquid leakage from between the base 1 and the upper structure 2; the waterstop member 3 can also be injected mortar, which is used to seal the lower surface of the upper structure 2 and the upper surface of the base 1 to reduce the possibility of liquid leakage from between the base 1 and the upper structure 2 to the outside of the base 1.

[0040] Reference Figure 1 and Figure 2 A water inlet assembly 4 is installed on the base 1, and the water inlet assembly 4 includes a water tank 41 and a water inlet pipe 42. The water tank 41 is installed next to the base 1, and the water inlet pipe 42 includes a first water inlet pipe 421, a second water inlet pipe 422 and a third water inlet pipe 423. One end of the first water inlet pipe 421 is connected to the water tank 41, and the other end extends into the base 1. The second water inlet pipe 422 is installed inside the base 1 and is connected to the first water inlet pipe 421. The second water inlet pipe 422 is perpendicular to the first water inlet pipe 421, and the plane formed by the first water inlet pipe 421 and the second water inlet pipe 422 is parallel to the upper surface of the base 1. Two third water inlet pipes 423 are installed, and the two third water inlet pipes 423 are both connected to the second water inlet pipe 422 and are distributed at both ends of the second water inlet pipe 422.

[0041] Reference Figure 2 and Figure 3 The third water inlet pipe 423 is perpendicular to the upper surface of the base 1 , and the water outlet port of the third water inlet pipe 423 is flush with the upper surface of the base 1 .

[0042] A branch pipe 425 is installed on the first water inlet pipe 421, and a water outlet valve 426 is installed on the branch pipe 425. After the experiment, the water outlet valve 426 on the branch pipe 425 is opened to allow the water entering the water storage tank 21 to flow out from between the base 1 and the upper structure 2 in the opposite direction along the water outlet hole 22, the third water inlet pipe 423, the second water inlet pipe 422 and the first water inlet pipe 421.

[0043] An inlet valve 424 is installed on the first water inlet pipe 421, and the inlet valve 424 is located between the base 1 and the water tank 41. Two inlet valves 424 are installed, one inlet valve 424 is installed between the branch pipe 425 and the water tank 41, and the other inlet valve 424 is installed between the branch pipe 425 and the base 1. When water is injected into the space between the base 1 and the upper structure 2, the outlet valve 426 is closed and the two inlet valves 424 are opened. When the liquid between the base 1 and the upper structure 2 is drained out, the inlet valve 424 between the branch pipe 425 and the water tank 41 is closed, the inlet valve 424 between the base 1 and the branch pipe 425 is opened, and the outlet valve 426 is opened to drain the liquid between the base 1 and the upper structure 2.

[0044] Reference Figure 1 and Figure 4A water storage tank 21 is provided on the upper structure 2, and a water outlet hole 22 is provided at the bottom of the water storage tank 21. There are multiple water outlet holes 22 evenly distributed at the bottom of the water storage tank 21. After the upper structure 2 is installed on the base 1 by means of waterproof glue or injected mortar, the water inlet valve 424 is opened to allow the water in the water tank 41 to enter between the base 1 and the upper structure 2 from the first water inlet pipe 421, the second water inlet pipe 422 and the third water inlet pipe 423. By observing the water outlet of the water outlet hole 22 and the liquid seepage at the connection between the base 1 and the upper structure 2, the water seepage effect of the base 1, the upper structure 2 and the waterproof glue or the injected mortar is detected, so as to facilitate the selection of higher quality materials to produce the base 1, the upper structure 2 and the water stop 3, thereby reducing the possibility of liquid leakage in the produced deep foundation pit plate during use.

[0045] A lifting assembly 6 is installed on the base 1, and the lifting assembly 6 includes a mounting rod 61 and a second lifting ring 62. The mounting rod 61 is installed on the base 1, and the second lifting ring 62 is installed on the end of the mounting rod 61 away from the base 1. When the base 1 is moved, the difficulty of moving the base 1 is reduced by the mounting rod 61 and the second lifting ring 62.

[0046] A first lifting ring 23 is installed on the upper structure 2 , and the first lifting ring 23 is detachably installed on the upper structure 2 through a fixing assembly 5 .

[0047] Reference Figure 4 and Figure 5 .Two mounting grooves 24 are installed on the upper structure 2, and the two mounting grooves 24 are symmetrically distributed on both sides of the water storage tank 21. Two groups of fixing components 5 are installed, and the two groups of fixing components 5 correspond one-to-one to the two mounting grooves 24. The fixing component 5 includes a fixing seat 51 and a connecting member 52. The fixing seat 51 is installed on the upper structure 2 and is located in the mounting groove 24. A threaded hole is opened on the fixing seat 51.

[0048] The connecting member 52 includes a connecting rod 522 and a connecting block 521. The lower end of the connecting rod 522 is a threaded portion, and the threaded portion of the connecting rod 522 is threadedly connected to the threaded hole. A locking member 53 is installed between the connecting rod 522 and the fixing seat 51. The locking member 53 includes a locking nut, which is sleeved on the connecting rod 522 and threadedly connected to the threaded portion of the connecting rod 522. The locking nut abuts against the upper surface of the fixing seat 51. The connecting block 521 is installed on the end of the connecting rod 522 away from the fixing seat 51. The first lifting ring 23 is installed on the connecting block 521 and is located at the end of the connecting block 521 facing away from the connecting rod 522. The first lifting ring 23 is installed on the upper structure 2. When the upper structure 2 needs to be moved, a hook or a rope is hung on the first lifting ring 23 or passed through the first lifting ring 23, and the upper structure 2 is driven to move by manpower or a crane, which is convenient for moving the upper structure 2 before and after the experiment and reduces the difficulty of moving the upper structure 2.

[0049] The upper surface of the fixing seat 51 is located below the upper surface of the upper structure 2 . When the upper structures 2 are stacked, the connecting rod 522 is removed from the fixing seat 51 to facilitate the stacking of multiple upper structures 2 .

[0050] The implementation principle of a foundation pit anti-seepage and plugging experimental simulation device in the embodiment of the present application is:

[0051] The base 1 is driven to move by the mounting rod 61 and the second hanging ring 62 , and the base 1 is placed at the position to be tested. The mounting rod 61 and the second hanging ring 62 facilitate the movement and placement of the base 1 .

[0052] A water-stop tape is placed on the upper surface of the base 1 , and then the upper structure 2 is placed between the base 1 and the water-stop tape, and the gap between the base 1 and the upper structure 2 is sealed by the water-stop tape.

[0053] When driving the upper structure 2 to move, the connecting rod 522 is threadedly connected to the fixing seat 51, and then the upper structure 2 is driven to move through the first lifting ring 23. The upper structure 2 is manually aligning and placed together with the base 1, and then the upper structure 2 is placed downward on the base 1. After the upper structure 2 is placed, the water inlet valve 424 on the first water inlet pipe 421 is opened to observe the liquid seepage in the water outlet 22.

[0054] Lift the upper structure 2 through the first lifting ring 23, replace the water-stop tape between the base 1 and the upper structure 2 with mortar, and then lower the upper structure 2, open the water inlet valve 424 again, and observe the water seepage between the base 1 and the upper structure 2. Repeat this process several times to judge the quality of the material performance and the grouting process.

[0055] The above are preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A foundation pit anti-seepage and plugging experiment simulation device, characterized in that: The invention comprises a base (1) and an upper structure (2), wherein the upper structure (2) is arranged on the base (1), a water stop member (3) is arranged between the upper structure (2) and the base (1), a water inlet assembly (4) is arranged on the base (1), a water outlet end of the water inlet assembly (4) is flush with the upper surface of the base (1), and a water outlet hole (22) is opened on the upper structure (2).

2. A foundation pit anti-seepage and plugging experimental simulation device according to claim 1, characterized in that: The water inlet assembly (4) comprises a water tank (41) and a water inlet pipe (42); one end of the water inlet pipe (42) is arranged on the water tank (41) and the other end is arranged on the base (1); the water outlet end of the water inlet pipe (42) is flush with the upper surface of the base (1).

3. A foundation pit anti-seepage and plugging experimental simulation device according to claim 2, characterized in that: The water inlet pipe (42) is provided with a water inlet valve (424), and the water inlet valve (424) is located between the water tank (41) and the base (1).

4. A foundation pit anti-seepage and plugging experimental simulation device according to claim 2, characterized in that: The water inlet pipe (42) is provided with a branch pipe (425) for discharging water, and the branch pipe (425) is provided with a water outlet valve (426).

5. The foundation pit anti-seepage and leakage plugging experimental simulation device according to claim 1 is characterized by: The upper structure (2) is provided with a water storage tank (21), the water outlet holes (22) are located at the bottom of the water storage tank (21), and a plurality of the water outlet holes (22) are evenly distributed.

6. The foundation pit anti-seepage and leakage plugging experimental simulation device according to claim 1, characterized in that: The upper structure (2) is provided with a first lifting ring (23), and two first lifting rings (23) are symmetrically distributed, and the two first lifting rings (23) are distributed on both sides of the water storage tank (21).

7. A foundation pit anti-seepage and plugging experimental simulation device according to claim 6, characterized in that: A fixing assembly (5) for fixing the first lifting ring (23) is arranged between the first lifting ring (23) and the upper structure (2), the fixing assembly (5) comprising a fixing seat (51) and a connecting piece (52), a mounting groove (24) is provided on the upper structure (2), the fixing seat (51) is arranged on the upper structure (2) and is located in the mounting groove (24), the upper surface of the fixing seat (51) is located below the upper surface of the upper structure (2), the connecting piece (52) is arranged on the fixing seat (51), the connecting piece (52) and the fixing seat (51) are detachably arranged, and the first lifting ring (23) is arranged on the connecting piece (52).

8. The foundation pit anti-seepage and leakage plugging experimental simulation device according to claim 7 is characterized by: The connecting member (52) comprises a connecting rod (522) and a connecting block (521); the connecting rod (522) is detachably arranged on the fixing seat (51); the connecting block (521) is arranged on an end of the connecting rod (522) away from the fixing seat (51); and the first lifting ring (23) is arranged on the connecting block (521) and is located on a side of the connecting block (521) facing away from the connecting rod (522).

9. The foundation pit anti-seepage and leakage plugging experimental simulation device according to claim 8, characterized in that: A locking member (53) is provided between the connecting rod (522) and the fixing seat (51) to prevent the connecting rod (522) from being separated from the fixing seat (51).

10. The foundation pit anti-seepage and leakage plugging experimental simulation device according to claim 1, characterized in that: The base (1) is provided with a lifting assembly (6) for lifting the base (1), the lifting assembly (6) comprising a second lifting ring (62) and a mounting rod (61), the mounting rod (61) being arranged on the base (1), and the second lifting ring (62) being arranged on an end of the mounting rod (61) away from the base (1).

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