River deep foundation pit construction leakage stoppage and repair device

Abstract

The utility model provides a leakage stopping and repairing device for river-near deep foundation pit construction. A grouting pipe is arranged on a plugging plate, a plurality of grouting holes are formed in a pipe body at one end of the grouting pipe, a grouting valve is arranged at the other end of the grouting pipe, a butt joint is arranged at one end of the grouting valve, a drainage pipe is further arranged on the plugging plate, and a drainage valve is arranged on the drainage pipe; pushing air cylinders are arranged on the two sides of the plugging plate, one ends of the pushing air cylinders are hinged to the surface of the plugging plate, and the other ends of the pushing air cylinders are hinged to the supporting plate. Supporting rods are further arranged on the two sides of the plugging plate and arranged below the pushing air cylinder, one end of each supporting rod is hinged to the surface of the plugging plate, and the other end of each supporting rod is hinged to the top plate. Immediate response and efficient plugging are achieved, specifically, a plugging plate in the device is matched with a grouting pipe and a grouting valve, and leakage holes can be rapidly positioned and plugged in the first time when leakage is found. Due to the design of the tip end of the grouting pipe, the grouting pipe can conveniently penetrate into the side wall of the foundation pit and directly act on a leakage point, accurate grouting is achieved through the porous grouting technology, and a water source is effectively blocked.

Description

Technical Field

[0001] The utility model relates to the field of foundation pit plugging, in particular to a leakage plugging and repairing device for deep foundation pit construction near a river. Background Art

[0002] During the construction of deep foundation pits, especially in areas near rivers or with high groundwater levels, there are serious problems of leakage and sudden outburst. When the excavation depth reaches or penetrates the confined aquifer, if the deadweight of the soil above the aquifer cannot effectively counteract the pressure of the confined water below, sudden groundwater outburst may occur, causing the foundation pit structure to become unstable. In particular, in areas where the geological composition includes highly permeable soils such as sand layers, silt layers or sandy silt, the integrity of water-stop curtains or retaining structures (such as underground continuous walls) is crucial, but these structures are susceptible to construction defects such as cracks and holes, which provide channels for groundwater to invade. Once leakage occurs, it will not only cause the water level in the pit to rise rapidly, causing a large amount of loss of surrounding soil, but may also cause ground collapse, causing uneven settlement of adjacent underground pipelines, or even damage, forming a chain reaction of safety hazards, and in serious cases threatening the safety of construction site personnel and the stability of surrounding buildings.

[0003] In response to such leakage, the current emergency measures and repair technologies often have problems of untimely response and low efficiency. Traditional plugging methods, such as the use of plugging plates, often have unsatisfactory plugging effects and are difficult to effectively block water flow in the long term. Once plugging is implemented, there is often no flexibility for re-repair or adjustment. Only temporary measures such as drainage can be taken to alleviate the impact of leakage, but the leakage problem cannot be fundamentally solved, let alone the damaged waterproof barrier function. Therefore, it is particularly urgent to develop a new type of leakage plugging and repair device that can respond quickly, efficiently plug and allow subsequent repair operations to be carried out, so as to ensure the safety of deep foundation pit construction, reduce the impact on the surrounding environment, and avoid possible major safety accidents. Utility Model Content

[0004] The main purpose of the utility model is to provide a leakage plugging and repairing device for deep foundation pit construction near a river, so as to solve the problems that leakage plugging and repair cannot be carried out in time, the plugging effect of the plugging plate is poor, and repair cannot be carried out after plugging, and only leakage drainage can be carried out.

[0005] In order to solve the above technical problems, the technical solution adopted by the utility model is: a leakage plugging and repairing device for deep foundation pit construction near a river, a grouting pipe is provided on the plugging plate, a plurality of grouting holes are provided on the pipe body at one end of the grouting pipe, a grouting valve is provided at the other end of the grouting pipe, a butt joint is provided at one end of the grouting valve, a drain pipe is also provided on the plugging plate, and a drain valve is provided on the drain pipe;

[0006] Push cylinders are provided on both sides of the blocking plate, one end of the push cylinder is hinged to the surface of the blocking plate, and the other end of the push cylinder is hinged to the support plate;

[0007] Support rods are also provided on both sides of the blocking plate. The support rods are arranged below the push cylinders. One end of the support rod is hinged to the surface of the blocking plate, and the other end of the support rod is hinged to the top plate.

[0008] In a preferred embodiment, a tip is provided at the end of the grouting pipe, and the tip is used to be inserted into the inside of the side wall of the foundation pit.

[0009] In a preferred embodiment, the end of the drain pipe is connected to the water tank via a water pump.

[0010] In a preferred embodiment, a plurality of fixing nails are also provided on the support plate, and the fixing nails pass through the support plate and are inserted into the bottom of the foundation pit.

[0011] In the preferred embodiment, a vertical plate bent upward is provided on one side of the top plate close to the side wall of the foundation pit, and an arc transition surface is provided between the vertical plate and the top plate.

[0012] In the preferred embodiment, the inner surface of the sealing plate is provided with a protrusion on the outer ring, and a rubber pad is provided on the protrusion. The inner surface of the sealing plate abuts against the side wall of the foundation pit to form a cavity.

[0013] In the preferred embodiment, the grouting valve is threadedly connected or clamped to the end of the grouting pipe.

[0014] The utility model provides a leakage plugging and repairing device for deep foundation pit construction near the river, which has instant response and efficient plugging: the plugging plate in the device cooperates with the grouting pipe and grouting valve to quickly locate and plug the leak as soon as the leakage is found. The design of the tip of the grouting pipe facilitates penetrating into the side wall of the foundation pit and directly acting on the leakage point. The multi-porous grouting technology is used to achieve precise grouting and effectively block the water source.

[0015] Flexible repair and enhanced sealing: The raised structure on the surface of the plugging plate is equipped with a rubber pad, which forms a good sealing cavity when pressed against the side wall of the foundation pit, further enhancing the tightness of the plugging. The injection of grouting material can not only plug the leak, but also reinforce and repair the damaged parts to ensure long-term waterproof effect.

[0016] Stable support and easy operation: The configuration of the push cylinder and the support rod ensures the stability and safety of the blocking plate during the pressure application process. The blocking position and strength can be easily adjusted through hydraulic or pneumatic drive, and the fixing nails on the support plate ensure that the entire device is stable and immovable.

[0017] Intelligent drainage and double protection: The linkage design of the drainage pipe and the water pump can effectively reduce the leakage water level before grouting, reduce the leakage pressure, create favorable conditions for grouting, and at the same time provide an immediate emergency drainage mechanism to prevent safety hazards caused by excessively high water levels.

[0018] Structural optimization and wide adaptability: The arc transition surface and vertical plate design on the support plate, as well as the fine structure of the blocking plate, improve the adaptability of the device to different foundation pit side wall shapes, ensure a close fit, reduce the risk of leakage, and are suitable for deep foundation pit construction under a variety of complex geological conditions.

[0019] In the specific implementation, the supporting structure is first fixed with fixing nails, and the plugging plate is accurately pushed to the leakage point by the push cylinder, and the sealing is increased with the help of rubber pads. The drainage system is opened to effectively drain, and then cement slurry is injected to complete the plugging. The whole process integrates multiple advantages such as rapid response, effective drainage, precise grouting and stable support, which fundamentally solves the leakage problem in deep foundation pit construction and ensures the safety and efficiency of the project. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The utility model is further described below in conjunction with the accompanying drawings and embodiments:

[0021] Figure 1 It is a schematic diagram of the overall blocking of the utility model;

[0022] Figure 2 It is a top view of the plugging of the utility model.

[0023] In the figure: foundation pit side wall 1; sealing plate 2; rubber pad 3; grouting pipe 4; grouting hole 401; grouting valve 5; docking joint 6; drainage pipe 7; drainage valve 8; support rod 9; top plate 10; vertical plate 1001; push cylinder 11; support plate 12; fixing nail 13; water pump 14; water tank 15. DETAILED DESCRIPTION

[0024] like Figure 1~2 As shown, a leakage plugging and repairing device for deep foundation pit construction near a river, a grouting pipe 4 is provided on the plugging plate 2, a plurality of grouting holes 401 are provided on the pipe body at one end of the grouting pipe 4, a grouting valve 5 is provided at the other end of the grouting pipe 4, a docking joint 6 is provided at one end of the grouting valve 5, a drain pipe 7 is also provided on the plugging plate 2, and a drain valve 8 is provided on the drain pipe 7; pushing cylinders 11 are provided on both sides of the plugging plate 2, one end of the pushing cylinder 11 is hinged to the surface of the plugging plate 2, and the other end of the pushing cylinder 11 is hinged to the support plate 12; support rods 9 are also provided on both sides of the plugging plate 2, the support rods 9 are arranged below the pushing cylinders 11, one end of the support rods 9 is hinged to the surface of the plugging plate 2, and the other end of the support rods 9 is hinged to the top plate 10.

[0025] The plugging plate 2 is a key component that directly contacts and plugs the leakage point, and a grouting pipe 4 is integrated on it. One end of the grouting pipe is provided with porous grouting holes 401, which are intended to uniformly inject plugging materials into the leakage area to achieve internal reinforcement and sealing. The other end of the grouting pipe is equipped with a grouting valve 5 for controlling the injection of grouting materials. One end of the valve is also equipped with a docking joint 6 for connection with external grouting equipment. This design allows the repair material to be delivered to the leakage area quickly and accurately.

[0026] The plugging plate 2 is also equipped with a drain pipe 7 and a drain valve 8. This design is intended to effectively drain the accumulated water before or during the grouting repair, reduce the water pressure in the leakage area, and create good conditions for grouting. The control of the drain valve makes the drainage operation more flexible and controllable.

[0027] In order to ensure that the plugging plate can be firmly and accurately positioned at the leakage position, a double-layer support mechanism is adopted. Push cylinders 11 are equipped on both sides of the plugging plate, which are connected to the plugging plate and the support plate 12 below through hinges, and can provide strong thrust to make the plugging plate fit tightly to the leakage. The support rod 9 is located below the push cylinder as an auxiliary support, and its two ends are respectively hinged to the plugging plate and the top plate 10, which enhances the stability and anti-deformation ability of the overall structure.

[0028] In the preferred embodiment, the end of the grouting pipe 4 is provided with a tip, and the tip is used to be inserted into the inside of the foundation pit side wall 1. The tip design helps the grouting pipe 4 to be more accurately inserted into the inside of the foundation pit side wall 1 where the leakage point is located, and even in a narrow or difficult to directly observe position, it can ensure that the grouting material can be transported to the area that needs repair most.

[0029] By inserting the tip directly into the source of the leak, the further spread of the water flow can be reduced immediately before the grouting operation begins, which helps to control the development of the dangerous situation and buys valuable time for subsequent plugging work.

[0030] The insertion of the end helps the grouting material to better combine with the original structure of the foundation pit side wall, and the formed sealing layer is more solid and reliable, which is conducive to maintaining the repair effect for a long time and preventing recurrence of leakage.

[0031] In the preferred embodiment, the end of the drain pipe 7 is connected to the water tank 15 through the water pump 14. Before or during the grouting repair, the water pump 14 actively extracts the leaking water, which can effectively reduce the water pressure in the leaking area and create favorable conditions for the grouting operation. This not only speeds up the water discharge speed, but also avoids greater damage caused by the intensification of leakage.

[0032] Compared with drainage relying solely on natural gravity, the use of the water pump 14 greatly improves the efficiency and continuous operation capability of the drainage system. Even when the amount of water seepage is large or rapid drainage is required, it can maintain efficient operation and ensure the safety and stability of the foundation pit.

[0033] By controlling the start and stop of the water pump 14, the drainage rate can be adjusted according to the actual drainage demand. The drainage can be quickly discharged to deal with emergency situations, or the drainage speed can be slowed down when necessary to avoid unnecessary disturbance or impact on the surrounding environment.

[0034] The connection design between the water pump 14 and the water tank 15 realizes the effective collection and management of leaking water. The collected water can be further analyzed and tested or discharged in compliance with environmental protection requirements. It also facilitates monitoring of leakage and evaluation of repair effects.

[0035] In a preferred embodiment, a plurality of fixing nails 13 are further provided on the support plate 12 , and the fixing nails 13 pass through the support plate 12 and are inserted into the bottom of the foundation pit.

[0036] The fixing nails can also bear part of the pressure transmitted from the jacking cylinder 11 and the support rod 9, as well as the reaction force during the grouting process, thereby dispersing the impact of these forces on the side walls and bottom of the foundation pit and protecting the foundation pit structure from damage.

[0037] The sturdy fixing mechanism reduces the risk of failure of the entire repair device due to external forces, improves the safety factor of on-site operations, and protects the safety of construction workers and surrounding facilities.

[0038] The fixing nails 13 directly penetrate the support plate 12 and penetrate deep into the bottom of the foundation pit. This design greatly enhances the stability of the entire plugging and repairing device. Under dynamic conditions such as grouting operations or changes in water pressure inside and outside the foundation pit, it can ensure that the plugging plate 2 and the supporting structure do not move, maintaining the continuity and effectiveness of the repair operation.

[0039] In the preferred embodiment, a vertical plate 1001 bent upward is provided on one side of the top plate 10 near the foundation pit side wall 1, and a circular arc transition surface is provided between the vertical plate 1001 and the top plate 10. When the top plate 10 is knocked forward, the circular arc transition surface provided between the vertical plate 1001 and the top plate 10 can move forward.

[0040] In the preferred embodiment, the inner surface of the sealing plate 2 is provided with a protrusion on the outer ring, and the protrusion is provided with a rubber pad 3, and the inner surface of the sealing plate 2 is against the foundation pit side wall 1 to form a cavity. The rubber pad 3 adapts to the uneven surface of the foundation pit side wall 1, and the sealing effect is better.

[0041] In the preferred embodiment, the grouting valve 5 is threadedly connected or clamped to the end of the grouting pipe 4. After the leakage is blocked, the grouting valve 5 and the drain valve 8 on the blocking plate 2 are disassembled, and then the push cylinder 11 and the support rod 9 are disassembled, and the blocking plate 2 is left in the blocking position.

[0042] The grouting valve 5 and the end of the grouting pipe 4 are connected by thread or by clamping. Both connection methods ensure the sealing and stability during the grouting operation, and are also easy to install and disassemble, providing convenience for construction. The threaded connection ensures the tightening and sealing effect, while the clamping method is simpler and faster.

[0043] After the operation is completed: After the leakage plugging operation is completed, the key components of the grouting system, the grouting valve 5 and the drainage valve 8 of the drainage system, are first removed. This operation means that the grouting and drainage operations have been completed, and these components are no longer needed to continue to participate in the work, and it is also convenient for recycling these components.

[0044] Structural disassembly and retention: Subsequently, the removal of the push cylinder 11 and the support rod 9 marks the completion of the mission of the temporary support structure. The removal of these components means that the plugging operation has successfully reached a stable state and no external support force is required. The plugging plate 2 remains in place and has become a permanent or semi-permanent part of the leakage point, continuing to play an isolation and protection role.

[0045] Convenience of subsequent maintenance and inspection: Through the above steps, keeping the plugging plate in place not only ensures the long-term sealing of the leakage point, but also provides convenience for possible inspection and maintenance in the future. If further maintenance or inspection is required, it can be carried out directly on the plugging plate without repeating the complicated installation process.

[0046] The above embodiments are only preferred technical solutions of the present invention and should not be regarded as limitations of the present invention. The protection scope of the present invention shall be the technical solutions recorded in the claims, including equivalent replacement solutions of the technical features in the technical solutions recorded in the claims. That is, equivalent replacement improvements within this scope are also within the protection scope of the present invention.

Claims

1. A leakage plugging and repairing device for deep foundation pit construction near a river, characterized by: A grouting pipe (4) is provided on the plugging plate (2), a plurality of grouting holes (401) are provided on a pipe body at one end of the grouting pipe (4), a grouting valve (5) is provided at the other end of the grouting pipe (4), a butt joint (6) is provided at one end of the grouting valve (5), a drainage pipe (7) is also provided on the plugging plate (2), and a drainage valve (8) is provided on the drainage pipe (7); Push cylinders (11) are provided on both sides of the blocking plate (2), one end of the push cylinder (11) is hinged to the surface of the blocking plate (2), and the other end of the push cylinder (11) is hinged to the support plate (12); Support rods (9) are also provided on both sides of the blocking plate (2). The support rods (9) are arranged below the push cylinder (11). One end of the support rod (9) is hinged to the surface of the blocking plate (2), and the other end of the support rod (9) is hinged to the top plate (10).

2. According to claim 1, a leakage plugging and repairing device for deep foundation pit construction near a river is characterized by: The end of the grouting pipe (4) is provided with a pointed end, and the pointed end is used to be inserted into the inside of the foundation pit side wall (1).

3. According to claim 1, a leakage plugging and repairing device for deep foundation pit construction near a river is characterized by: The end of the drainage pipe (7) is connected to the water tank (15) through the water pump (14).

4. According to claim 1, a leakage plugging and repairing device for deep foundation pit construction near a river is characterized by: A plurality of fixing nails (13) are also provided on the support plate (12), and the fixing nails (13) pass through the support plate (12) and are inserted into the bottom of the foundation pit.

5. According to claim 1, a leakage plugging and repairing device for deep foundation pit construction near a river is characterized by: A vertical plate (1001) bent upward is provided on one side of the top plate (10) close to the foundation pit side wall (1), and an arc transition surface is provided between the vertical plate (1001) and the top plate (10).

6. According to claim 1, a leakage plugging and repairing device for deep foundation pit construction near a river is characterized by: The inner surface of the blocking plate (2) is provided with a protrusion on the outer ring, and a rubber pad (3) is provided on the protrusion. The inner surface of the blocking plate (2) abuts against the side wall (1) of the foundation pit to form a cavity.

7. According to claim 1, a leakage plugging and repairing device for deep foundation pit construction near a river is characterized by: The grouting valve (5) is threadedly connected or clamped to the end of the grouting pipe (4).

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