CN216130158U - Subway station bottom plate arranges stifled water structure - Google Patents

Abstract

The utility model discloses a subway station bottom plate drainage and water plugging structure which comprises a plurality of dewatering wells, wherein all the dewatering wells are arranged on the bottom surface of a foundation pit at intervals, a dewatering pipeline is arranged in each dewatering well, a reserved hole is formed in the position, corresponding to each dewatering well, of the bottom plate, the upper end of each dewatering pipeline is arranged in the reserved hole, a circular water-stop plate corresponding to the reserved hole is arranged on the outer side wall of the upper end of each dewatering pipeline in an outward protruding mode, and a valve is arranged at the upper end of each dewatering pipeline; all the water reducing pipelines are communicated into a whole through a communication pipe network, and the communication pipe network is arranged below the bottom plate. By adopting the dewatering pipeline, underground water can be prevented from gushing out from the reserved holes of the bottom plate in the dewatering process; all the dewatering pipelines are connected into a dewatering network through a communication pipe network, so that the dewatering wells are ensured to be positioned at the same water level in the dewatering process, the balance of the water discharge pressure of the station bottom plate is maintained, and the drainage and pressure reduction effects are achieved.

Description

Subway station bottom plate arranges stifled water structure

Technical Field

The utility model relates to the technical field of foundation pit dewatering, in particular to a water plugging and draining structure for a bottom plate of a subway station.

Background

With the rapid development of urban construction, rail transit is more and more popular, the construction of subway station deep foundation pit engineering presents normality, foundation pit dewatering is a key process in subway station deep foundation pit engineering, and under the complicated hydrogeological condition, foundation pit dewatering faces many new challenges. When the station bottom plate is constructed, in order to prevent the bottom plate from floating upwards, underground water gushes out, holes need to be reserved at the bottom plate to continue pumping, and the underground water is lowered to a designed water level.

At present, when the holes are not sealed in the precipitation process before the holes are not sealed in the bottom plate of the foundation pit and the holes are not sealed after precipitation is finished, the water level rises sharply due to large water pressure, underground water flows out of the bottom plate of the station through the holes, and great influence is brought to the waterproof quality of the main structure of the station and the operation in the later stage. In addition, the dewatering wells are mutually independent, so that the bottom plate of the foundation pit can bear unbalanced water pressure in the dewatering process, and adverse effects are brought to the main structure.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a subway station bottom plate water plugging and draining structure, so that the defect that underground water in the existing precipitation wells flows out of the bottom plate through reserved holes of the bottom plate and the precipitation wells are mutually independent to cause the bottom plate to bear unbalanced underground water pressure is overcome.

In order to achieve the purpose, the utility model provides a subway station bottom plate water drainage and blockage structure which comprises a plurality of dewatering wells, wherein all the dewatering wells are arranged on the bottom surface of a foundation pit at intervals, a dewatering pipeline is arranged in each dewatering well, reserved holes are formed in the bottom plate at positions corresponding to the dewatering wells, the upper ends of the dewatering pipelines are arranged in the reserved holes, annular water stop plates corresponding to the reserved holes are arranged on the outer side walls of the upper ends of the dewatering pipelines in an outward protruding mode, and valves are arranged at the upper ends of the dewatering pipelines; all the water reducing pipelines are communicated into a whole through a communication pipe network, and the communication pipe network is arranged below the bottom plate.

Preferably, in the above technical scheme, the communicating pipe network includes a plurality of communicating pipes connected between two adjacent sewerage pipelines.

Preferably, in the above technical solution, the annular water-stop plate is erected on the steel mesh in the bottom plate.

Preferably, in the above technical solution, the downcomer includes: the connecting pipe is arranged in the reserved hole, and the annular water-stop sheet is convexly arranged on the outer side wall of the connecting pipe; the top surface of the valve pipe is convexly provided with a water outlet, the pipe diameter of the water outlet is smaller than that of the valve pipe, and the valve is arranged on the water outlet; the lower end of the valve pipe is communicated with the upper end of the connecting pipe; the lower end of the protection tube is communicated with the upper end of the valve tube, and the water outlet and the valve are both positioned in the protection tube; the upper end interface of the joint pipe is communicated with the lower end of the connecting pipe, and the side interface of the joint pipe is communicated with the communicating pipe network; and the upper end of the dewatering pipe is communicated with the lower end interface of the joint pipe, and the lower end of the dewatering pipe extends downwards to the bottom of the dewatering well.

Preferably, in the above technical solution, the top surface of the protection tube is flush with the top surface of the bottom plate, and the bottom surface of the connection tube is flush with the bottom surface of the bottom plate.

Preferably, in the above technical scheme, the upper and lower both ends of valve pipe all are equipped with the external screw thread, the lower extreme of protection tube with the upper end of connecting pipe all be equipped with external screw thread matched with internal thread.

Preferably, in the above technical solution, the joint pipe and the connecting pipe, the joint pipe and the downcomer pipe, and the joint pipe and the communicating pipe network are connected to each other through internal threads and external threads.

Preferably, in the above technical solution, a polytetrafluoroethylene tape is wound between the internal thread and the external thread.

Compared with the prior art, the utility model has the following beneficial effects:

1. the upper end of the dewatering pipeline is provided with the annular water stop plate opposite to the reserved hole, so that a gap between the dewatering pipeline and the reserved hole can be closed, the function of water blocking is exerted before the reserved hole of the bottom plate is not blocked, and underground water is prevented from flowing out of the reserved hole of the bottom plate in the dewatering process; after precipitation is finished, plugging is convenient, the structure has a water plugging function, and concrete is poured outside the precipitation pipeline and above the annular water-stop plate only by closing the valve; and all the dewatering pipelines are connected into a whole through a communication pipe network to form a dewatering network, so that the dewatering wells are at the same water level in the dewatering process, the balance of the water drainage pressure of the station bottom plate is maintained, and the water drainage and pressure reduction effects are achieved.

2. The valve is arranged in the protection pipe, can protect the valve and is convenient to open and close, when the reserved hole is plugged, concrete is only needed to be injected into the space above the outer side of the protection pipe, the outer side of the connecting pipe and the circular water-stop plate, plugging materials are saved, and after the reserved hole is plugged, if needed, the water in the dewatering well can be dewatered by opening and closing the valve.

Drawings

Fig. 1 is a schematic structural view of a water drainage and plugging structure of a bottom plate of a subway station according to the present invention.

Fig. 2 is a schematic structural view of a valve tube according to the present invention.

Fig. 3 is a schematic structural view of the annular water-stop plate of the subway station bottom plate water drainage and plugging structure according to the utility model, which is mounted on a reinforcing mesh in the bottom plate.

FIG. 4 is a schematic view showing the communication between two adjacent water discharge pipelines according to the present invention.

Fig. 5 is a schematic view of the connection structure of all dewatering wells according to the present invention.

Description of the main reference numerals:

1-bottom plate, 2-protection tube, 3-valve tube, 4-circular water-stop plate, 5-connector tube, 6-downcomer tube, 7-preformed hole, 8-connecting tube, 9-water outlet, 10-valve, 11-reinforcing mesh, 12-communicating tube and 13-dewatering well.

Detailed Description

The following detailed description of the present invention is provided in conjunction with the accompanying drawings, but it should be understood that the scope of the present invention is not limited to the specific embodiments.

Throughout the specification and claims, unless explicitly stated otherwise, the word "comprise", or variations such as "comprises" or "comprising", will be understood to imply the inclusion of a stated element or component but not the exclusion of any other element or component.

Fig. 1 to 5 are schematic structural views illustrating a subway station floor drainage and plugging structure including a plurality of dewatering wells 13 according to a preferred embodiment of the present invention. Referring to fig. 1 to 5, all precipitation wells 13 are spaced apart from each other on the bottom surface of the foundation pit for precipitation. A dewatering pipeline is arranged in each dewatering well 13, a reserved hole 7 is formed in the position, corresponding to each dewatering well 13, of the bottom plate 1, the upper end of the dewatering pipeline is arranged in the reserved hole 7, a circular water-stop plate 4 corresponding to the reserved hole 7 is arranged on the outer side wall of the upper end of the dewatering pipeline in an outwards protruding mode, a valve 10 is arranged at the upper end of the dewatering pipeline, and the valve 10 is preferably located above the circular water-stop plate 4 and is convenient to open and close the valve 10. All the water reducing pipelines are communicated into a whole through a communication pipe network, so that all the water reducing pipelines form a water reducing network, and the communication pipe network is arranged below the bottom plate 1. The circular water-stop plate 4 opposite to the reserved hole 7 is arranged at the upper end of the dewatering pipeline, so that a gap between the dewatering pipeline and the reserved hole 7 can be closed, the function of water blocking is exerted before the reserved hole 7 of the bottom plate 1 is not blocked, and underground water is prevented from flowing out of the reserved hole 7 of the bottom plate 1 in the dewatering process; after precipitation is finished, plugging is convenient, the structure has a water plugging function, and concrete is poured outside the precipitation pipeline and above the annular water-stop plate 4 only by closing the valve 10; and all the dewatering pipelines form a dewatering network through the communicating pipe network, so that the dewatering wells 13 are ensured to be positioned at the same water level in the dewatering process, the water pressure under the station bottom plate 1 is kept balanced, and the drainage and pressure reduction effects are achieved.

Referring to fig. 4 and 5, in order to facilitate installation and connection of the communication pipe network, it is preferable that the communication pipe network includes a plurality of communication pipes 12 connected between two adjacent downcast pipes.

Referring to fig. 3 and 4, in order to improve the installation strength of the annular water-stop sheet 4, the annular water-stop sheet 4 is preferably installed on the reinforcing mesh 11 in the bottom plate 1.

Referring to fig. 1 to 4, preferably, the downcomer pipe includes a connection pipe 8, a valve pipe 3, a protection pipe 2, a connector pipe 5, and a downcomer pipe 6. The connecting pipe 8 is arranged in the reserved hole 7, and the outer side wall of the connecting pipe 8 is convexly provided with the circular water-stop sheet 4. A water outlet 9 is convexly arranged on the top surface of the valve pipe 3, the pipe diameter of the water outlet 9 is smaller than that of the valve pipe 3, and a valve 10 is arranged on the water outlet 9; the lower end of the valve pipe 3 is communicated with the upper end of the connecting pipe 8. Lower extreme and the upper end intercommunication of valve pipe 3 of protection tube 2, delivery port 9 and valve 10 all are located protection tube 2, and it has certain operating clearance to reserve between valve 10 and the protection tube 2, the switching of valve 10 of being convenient for, valve 10 sets up the structure in protection tube 2, can protect valve 10, the switching of valve 10 of being convenient for, when hole 7 is reserved in the shutoff, only need pour into the concrete into the protection tube 2 outside, the space of the top of the 8 outsides of connecting pipe and ring form water-stop sheet 4 can, save plugging material, and after hole 7 is reserved in the shutoff, if need, can also pass through the switching of valve 10, come to carry out precipitation to precipitation well 13. The upper end interface of the joint pipe 5 is communicated with the lower end of the connecting pipe 8, and the side interface of the joint pipe 5 is communicated with a communicating pipe network; the upper end of the precipitation pipe 6 is communicated with the lower end interface of the joint pipe 5, and the lower end of the precipitation pipe 6 extends downwards to the bottom of the precipitation well 13 so as to pump away water in the precipitation well 13 for precipitation. The joint pipe 5 can be a tee joint, a four-way joint, a five-way joint or a six-way joint, and the like, so that all the downcomer pipes are connected into a whole.

Referring to fig. 1, preferably, the top surface of the protection tube 2 is flush with the top surface of the base plate 1, and the bottom surface of the connection tube 8 is flush with the bottom surface of the base plate 1, i.e., the height of the connection tube 8, the valve tube 3 and the protection tube 2 is the same as the thickness of the base plate 1.

Referring to fig. 1 to 4, the pipes may be connected by a flange, a socket, or a thread. Preferably, the upper and lower both ends of valve pipe 3 all are equipped with the external screw thread, and the lower extreme of protection tube 2 and the upper end of connecting pipe 8 all are equipped with the internal thread with external screw thread matched with, are convenient for protect tube 2 and valve pipe 3 and the connection between connecting pipe 8 and the valve pipe 3. Further preferably, polytetrafluoroethylene tape is wound between the inner thread and the outer thread between the protection tube 2 and the valve tube 3, and between the connecting tube 8 and the valve tube 3, so that the sealing performance of pipeline connection is improved, and water leakage is avoided

Referring to fig. 1 to 4, the pipes may be connected by a flange, a socket, or a thread. Preferably, the joint pipe 5 and the connecting pipe 8, the joint pipe 5 and the downcomer 6, and the joint pipe 5 and the communicating pipe 12 for communicating the pipe network are connected with each other through internal threads and external threads, so that the connecting mode is simple and convenient. Preferably, polytetrafluoroethylene raw material belts are wound between the joint pipe 5 and the connecting pipe 8, between the joint pipe 5 and the downcomer pipe 6, and between the joint pipe 5 and the communicating pipe 12 for communicating the pipe network, so that the sealing performance of pipe connection is improved, and water leakage is avoided.

When the water plugging and draining structure disclosed by the utility model is used for dewatering, all dewatering wells 13 can be dewatered only by communicating the water pumping device to one or more dewatering pipelines, and the structure is simple and convenient; the dewatering pipelines are connected into a net structure, so that the dewatering wells 13 can be ensured to be at the same water level in the dewatering process, the water pressure under the station bottom plate 1 is kept balanced, and the drainage and pressure reduction effects are achieved; in the precipitation process, the circular water-stop plate 4 can prevent water in the precipitation well 13 from gushing out from the reserved holes 7.

The foregoing descriptions of specific exemplary embodiments of the present invention have been presented for purposes of illustration and description. It is not intended to limit the utility model to the precise form disclosed, and obviously many modifications and variations are possible in light of the above teaching. The exemplary embodiments were chosen and described in order to explain certain principles of the utility model and its practical application to enable one skilled in the art to make and use various exemplary embodiments of the utility model and various alternatives and modifications as are suited to the particular use contemplated. It is intended that the scope of the utility model be defined by the claims and their equivalents.

Claims (8)

1. A water plugging structure is arranged on a bottom plate of a subway station, and the structure is characterized by comprising a plurality of dewatering wells, wherein all the dewatering wells are arranged on the bottom surface of a foundation pit at intervals, a dewatering pipeline is arranged in each dewatering well, reserved holes are formed in the bottom plate at positions corresponding to the dewatering wells, the upper ends of the dewatering pipelines are arranged in the reserved holes, circular water-stop plates corresponding to the reserved holes are arranged on the outer side wall of the upper end of the dewatering pipeline in an outwards protruding mode, and valves are arranged at the upper ends of the dewatering pipelines; all the water reducing pipelines are communicated into a whole through a communication pipe network, and the communication pipe network is arranged below the bottom plate.

2. The subway station bottom plate drainage and water plugging structure as claimed in claim 1, wherein said communication pipe network comprises a plurality of communication pipes connected between two adjacent said sewerage pipes.

3. The subway station bottom plate drainage and water plugging structure as claimed in claim 1, wherein said circular water-stop plate is erected on a steel mesh in said bottom plate.

4. The subway station floor drain and block water structure of claim 1, wherein said sewer pipe comprises:

the connecting pipe is arranged in the reserved hole, and the annular water-stop sheet is convexly arranged on the outer side wall of the connecting pipe;

the top surface of the valve pipe is convexly provided with a water outlet, the pipe diameter of the water outlet is smaller than that of the valve pipe, and the valve is arranged on the water outlet; the lower end of the valve pipe is communicated with the upper end of the connecting pipe;

the lower end of the protection tube is communicated with the upper end of the valve tube, and the water outlet and the valve are both positioned in the protection tube;

the upper end interface of the joint pipe is communicated with the lower end of the connecting pipe, and the side interface of the joint pipe is communicated with the communicating pipe network; and

the upper end of the dewatering pipe is communicated with the lower end interface of the joint pipe, and the lower end of the dewatering pipe extends downwards to the bottom of the dewatering well.

5. The subway station bottom plate drainage and water plugging structure as claimed in claim 4, wherein the top surface of said protection tube is flush with the top surface of said bottom plate, and the bottom surface of said connection tube is flush with the bottom surface of said bottom plate.

6. The water drainage and blockage structure of a bottom plate of a subway station as claimed in claim 4, wherein the upper end and the lower end of the valve pipe are both provided with external threads, and the lower end of the protection pipe and the upper end of the connection pipe are both provided with internal threads matched with the external threads.

7. The subway station bottom plate drainage and water plugging structure as claimed in claim 4, wherein said joint pipe and said connecting pipe, said joint pipe and said downcomer pipe, and said joint pipe and said communication pipe network are connected to each other by internal and external threads.

8. The subway station bottom plate water drainage and plugging structure as claimed in claim 6 or 7, wherein a polytetrafluoroethylene tape is wound between said internal thread and said external thread.

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