Foundation pit dewatering well sealing structure

Abstract

The utility model discloses a foundation pit dewatering well well sealing structure, it includes the dewatering well of embedding in the bottom of foundation pit, the surface of dewatering well pours and has the post -poured concrete of being located the bottom of foundation pit, the top of dewatering well is provided with the pipe plug of extending to the inner chamber of dewatering well, the surface fixedly connected with round plate of pipe plug, the bottom of round plate is provided with the sealing rubber bushing of inserting the inner chamber of pipe plug, the top of pipe plug is provided with the connecting pipe of going through. The utility model discloses the cooperation arrangement of pipe plug, round plate and sealing rubber bushing in the top of dewatering well, then through the flower basket bolt and post -poured concrete between round plate pull together, during sealing rubber bushing press in the top of dewatering well and stretch into the inside of dewatering well, guarantee the sealing effect between pipe plug, round plate and sealing rubber bushing and dewatering well, guarantee that pipe plug and round plate and dewatering well between will not seep, can reach the pumping function of restoring dewatering well with detachable structure, realize the repeated use, reduce the use cost's purpose.

Description

Technical Field

[0001] This utility model belongs to the field of foundation pit technology, and in particular relates to the sealing structure of foundation pit dewatering wells. Background Technology

[0002] Dewatering of foundation pits refers to the work done when the groundwater level is higher than the bottom of the excavation pit during excavation, and groundwater will continuously seep into the pit. In order to ensure that the foundation pit can be constructed under dry conditions, and to prevent slope instability, quicksand in the foundation, pit bottom heave, piping at the bottom of the pit, and a decrease in the bearing capacity of the foundation, dewatering well sealing is a key process in the later stage of underground engineering (such as foundation pits, tunnels, basements, etc.). Through reasonable structural design and construction technology, it blocks the backflow channels of groundwater, ensures the long-term stability of the engineering structure, and avoids the hidden danger of leakage.

[0003] For large foundation pits, dozens to hundreds of dewatering wells are usually required. If permanent sealing is used, subsequent segmented construction or dewatering of adjacent areas will require re-drilling, pipe laying, and equipment installation, which will consume huge costs. Therefore, we designed a foundation pit dewatering well sealing structure, which uses a detachable structure to restore the pumping function of the dewatering well, enabling reuse and reducing operating costs. Utility Model Content

[0004] The purpose of this utility model is to provide a sealing structure for a foundation pit dewatering well, which has the advantages of restoring the pumping function of the dewatering well by adopting a detachable structure, realizing reuse, and reducing the cost of use, so as to solve the above-mentioned technical problems.

[0005] The technical solution of this utility model to solve the above-mentioned technical problems is as follows: a well sealing structure for a foundation pit dewatering well, comprising a dewatering well buried at the bottom of the foundation pit, wherein the surface of the dewatering well is filled with post-cast concrete located at the bottom of the foundation pit, a plug extending into the inner cavity of the dewatering well is provided at the top of the dewatering well, a circular plate is fixedly connected to the surface of the plug, a sealing sleeve inserted into the inner cavity of the plug is provided at the bottom of the circular plate, a connecting pipe is provided through the top of the plug, a pumping pipe extending into the interior of the post-cast concrete is provided through the inner cavity of the connecting pipe, two symmetrical tension rings are installed on the circular plate, a base plate is fixedly installed on both sides of the top of the post-cast concrete, a rotating frame is provided at the top of the base plate, threaded rods threadedly connected to the rotating frame are provided at both ends of the rotating frame, and a hook connected to the tension rings is fixedly connected to the end of the threaded rod at the top.

[0006] Preferably, a connecting ring is fixedly connected to the end of the threaded rod at the bottom, and a fixing ring is welded to the top of the substrate, with the fixing ring being movably connected to the connecting ring.

[0007] Preferably, a screw rod is welded to the top of the tensioning ring, and the top of the screw rod passes through the top of the circular plate and is threaded with a nut.

[0008] Preferably, the top of the circular plate has through holes on both sides for the nuts to pass through.

[0009] Preferably, the top of the sealing sleeve is provided with a rim, which presses against the top of the post-poured concrete.

[0010] The beneficial effects of this utility model are: 1. This utility model uses a combination of a plug, a circular plate, and a sealing sleeve arranged on top of a dewatering well. Then, the circular plate is connected to the post-poured concrete using turnbuckles. During this process, the sealing sleeve is pressed against the top of the dewatering well and extends into the interior of the dewatering well, ensuring a sealing effect between the plug, the circular plate, and the sealing sleeve and the dewatering well. This prevents water leakage between the plug and the circular plate and the dewatering well, thus achieving the goal of restoring the pumping function of the dewatering well with a detachable structure, enabling reuse, and reducing operating costs. Attached Figure Description

[0011] The advantages of the present invention, as described in the following detailed description in conjunction with the accompanying drawings, will become clearer and more readily understood. These drawings are merely illustrative and do not limit the scope of the invention. Figure 1 This is a schematic diagram of one embodiment of the present utility model; Figure 2 This is a three-dimensional disassembled schematic diagram of the pipe blockage and dewatering well according to an embodiment of the present invention; Figure 3 This is a three-dimensional schematic diagram of the rotating frame and the substrate according to an embodiment of the present invention; Figure 4 This is a three-dimensional disassembled schematic diagram of the plug and sealing sleeve in one embodiment of the present invention. Detailed Implementation

[0012] In the following description, embodiments of the foundation pit dewatering well sealing structure of this utility model will be described with reference to the accompanying drawings.

[0013] Figure 1-4This invention illustrates a sealing structure for a foundation pit dewatering well according to an embodiment of the present invention. It includes a dewatering well 1 buried at the bottom of the foundation pit. The surface of the dewatering well 1 is covered with post-cast concrete 2 located at the bottom of the foundation pit. A plug pipe 3 extending into the inner cavity of the dewatering well 1 is provided at the top of the dewatering well 1. A circular plate 4 is fixedly connected to the surface of the plug pipe 3. A sealing sleeve 5 inserted into the inner cavity of the plug pipe 3 is provided at the bottom of the circular plate 4. A rim is provided at the top of the sealing sleeve 5, pressing against the top of the post-cast concrete 2. A connecting pipe 6 is passed through the top of the plug pipe 3. A pumping pipe 7 extending into the interior of the post-cast concrete 2 passes through the inner cavity of the connecting pipe 6. Two symmetrical tension rings 8 are installed on the circular plate 4. Both sides of the top of the concrete 2 are fixedly installed with base plates 9. The top of the base plate 9 is provided with a rotating frame 10. Both ends of the rotating frame 10 are provided with threaded rods 11 that are threadedly connected to the rotating frame 10. The end of the bottom threaded rod 11 is fixedly connected with a connecting ring 12. The top of the base plate 9 is welded with a fixing ring 17, which is movably connected to the connecting ring 12. The end of the top threaded rod 11 is fixedly connected with a hook 13 that is hooked to a tension ring 8. The top of the tension ring 8 is welded with a screw rod 14. The top of the screw rod 14 passes through the top of the circular plate 4 and is threadedly connected with a nut 15. Both sides of the top of the circular plate 4 are provided with through holes 16 for the nut 15 to pass through.

[0014] Working principle: In use, concrete is poured on the surface of the dewatering well 1 and the bottom of the foundation pit beforehand. Bolts are pre-installed. Then, the sealing sleeve 5 is placed on the surface of the plug pipe 3 and pressed against the bottom of the circular plate 4. The plug pipe 3 is inserted into the top of the dewatering well 1, so that the sealing sleeve 5 enters the dewatering well 1 and presses against the top of the dewatering well 1. The tension ring 8 is fixedly installed on the circular plate 4 by the cooperation of the screw rod 14 and the nut 15. The bolts pre-embedded in the surface of the post-poured concrete 2 are used to install the base plate 9. Then, the hook 13 at the end of the rotating frame 10 is hung on the tension ring 8. As the operating frame 10 rotates, the circular plate 4 is pulled downwards and tightened, ensuring the sealing effect between the plug pipe 3, the circular plate 4, and the sealing sleeve 5 and the dewatering well 1, and ensuring that there is no water leakage between the plug pipe 3 and the circular plate 4 and the dewatering well 1. The plug can be sealed by inserting a wooden plug into the connecting pipe 6. During this process, the wooden plug can also be removed, and the pumping pipe 7 can be inserted into the dewatering well 1 through the connecting pipe 6 to pump water. Alternatively, the rotating frame 10 can be reversed to disengage the hook 13 from the tensioning ring 8, remove the circular plate 4 and the plug pipe 3 from the top of the dewatering well 1, and insert multiple pumping pipes 7 into the dewatering well 1 to pump water.

[0015] In summary, the sealing structure of this foundation pit dewatering well, through the coordinated arrangement of the plug pipe 3, the circular plate 4, and the sealing sleeve 5 on the top of the dewatering well 1, and then the circular plate 4 is connected to the post-poured concrete 2 by turnbuckles, during which the sealing sleeve 5 is pressed on the top of the dewatering well 1 and extends into the interior of the dewatering well 1, ensuring the sealing effect between the plug pipe 3, the circular plate 4, and the sealing sleeve 5 and the dewatering well 1, and ensuring that there is no water leakage between the plug pipe 3 and the circular plate 4 and the dewatering well 1, can achieve the purpose of restoring the pumping function of the dewatering well by adopting a detachable structure, realizing reuse, and reducing the use cost.

Claims

1. A sealing structure for a foundation pit dewatering well, characterized in that, The structure includes a dewatering well (1) buried at the bottom of the foundation pit. The surface of the dewatering well (1) is covered with post-cast concrete (2) located at the bottom of the foundation pit. A plug pipe (3) extending into the inner cavity of the dewatering well (1) is installed at the top of the dewatering well (1). A circular plate (4) is fixedly connected to the surface of the plug pipe (3). A sealing sleeve (5) inserted into the inner cavity of the plug pipe (3) is installed at the bottom of the circular plate (4). A connecting pipe (6) is installed through the top of the plug pipe (3). The inner cavity of the connecting pipe (6) is perforated by… A water pipe (7) extends into the interior of the post-cast concrete (2). Two symmetrical tension rings (8) are installed on the circular plate (4). A base plate (9) is fixedly installed on both sides of the top of the post-cast concrete (2). A rotating frame (10) is provided on the top of the base plate (9). A threaded rod (11) threadedly connected to the rotating frame (10) is provided at both ends of the rotating frame (10). A hook (13) that is attached to the tension ring (8) is fixedly connected to the end of the threaded rod (11) at the top.

2. The well sealing structure for foundation pit dewatering wells according to claim 1, characterized in that, A connecting ring (12) is fixedly connected to the end of the threaded rod (11) at the bottom, and a fixing ring (17) is welded to the top of the base plate (9). The fixing ring (17) is movably connected to the connecting ring (12).

3. The well sealing structure for foundation pit dewatering wells according to claim 2, characterized in that, The top of the tensioning ring (8) is welded with a screw rod (14), the top of the screw rod (14) passes through the top of the circular plate (4) and is threaded with a nut (15).

4. The well sealing structure for foundation pit dewatering wells according to claim 3, characterized in that, Both sides of the top of the circular plate (4) are provided with through holes (16) for the nuts (15) to pass through.

5. The well sealing structure for foundation pit dewatering wells according to claim 4, characterized in that, The top of the sealing sleeve (5) is provided with a rim, which presses against the top of the post-poured concrete (2).

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