CN211080490U

CN211080490U - A prevent ponding structure for manhole

Info

Publication number: CN211080490U
Application number: CN201921705076.9U
Authority: CN
Inventors: 杜劢; 姚文杰; 彭嵚; 徐重之; 梅强; 李念国; 车家伟
Original assignee: Rail Transit Construction Co Ltd of China Construction Eighth Engineering Division Co Ltd
Current assignee: Rail Transit Construction Co Ltd of China Construction Eighth Engineering Division Co Ltd
Priority date: 2019-10-12
Filing date: 2019-10-12
Publication date: 2020-07-24
Anticipated expiration: 2029-10-12

Abstract

The utility model relates to a prevent ponding structure for manhole, include: waterproof pieces which are attached to the inner wall of the manhole and arranged at intervals along the depth direction of the manhole; the strainer is arranged along the waterproof piece, the strainer is embedded in the primary support structure at the inner wall of the manhole, and one end of the strainer is exposed out of the primary support structure to form an exposed end; and the sump pit corresponds to the exposed end and is arranged at the bottom of the maintenance well, and water permeating into the primary support structure in the soil body around the maintenance well flows to the strainer along the waterproof piece and then flows into the sump pit through the exposed end and is discharged by the water pump so as to prevent water from accumulating in the maintenance well. The utility model discloses the effectual problem of having solved the service well ponding can play the effect that jointly strutted to the lateral wall of service well in waterproof, drainage, has further strengthened the intensity of service well, guarantees service well safety.

Description

A prevent ponding structure for manhole

Technical Field

The utility model relates to a building construction field refers in particular to a prevent ponding structure for inspection shaft.

Background

The shield construction is widely applied due to the advantages of safety, rapidness and the like, but in actual construction, due to the complexity of geological and hydrological conditions and construction environments, mechanical faults inevitably occur in the tunneling process of the shield machine, particularly under unfavorable geological conditions, for example, the abrasion of a cutter head directly influences the engineering progress, so that the maintenance work of the shield machine in the long-distance tunneling process is particularly important, and a maintenance well needs to be arranged in the tunneling process to maintain the shield machine.

In actual work progress, the condition that the hydrology condition of reality probably has nonconformity with the ground investigation report leads to the inspection shaft to appear gushing water when the excavation, leads to inspection shaft ponding, and takes the water work can influence the construction progress of inspection shaft, can't guarantee the stable state of inspection shaft, produces the influence to the maintenance of later stage shield.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome prior art's defect, provide a prevent ponding structure for inspection shaft, solved the problem of inspection shaft ponding, can play the effect of jointly strutting to the lateral wall of inspection shaft in waterproof, drainage, further strengthened the intensity of inspection shaft, guarantee the inspection shaft safety.

The technical scheme for realizing the purpose is as follows:

the utility model provides a prevent ponding structure for overhaul well, include:

waterproof pieces which are attached to the inner wall of the manhole and arranged at intervals along the depth direction of the manhole;

the strainer is arranged along the waterproof piece, the strainer is embedded in the primary support structure at the inner wall of the manhole, and one end of the strainer is exposed out of the primary support structure to form an exposed end; and

the water collecting pit corresponds to the exposed end and is arranged at the bottom of the maintenance well, and water permeating into the primary support structure in soil around the maintenance well flows to the strainer along the waterproof piece and then flows into the water collecting pit through the exposed end and is discharged by the water pump, so that water accumulated in the maintenance well is prevented.

The utility model provides a prevent ponding structure for inspection and repair well, through install in the waterproof part of inspection and repair well inner wall in order to prevent that the rivers in the soil body around the inspection and repair well from going into the inspection and repair well, and then the installation sets up the strainer on the waterproof part, form through the mode of hanging net injection concrete and just prop up structure and strainer and waterproof part and bury underground in just propping up the structure, this just prop up the structure and play the effect of strutting the inspection and repair well, water that is not blocked by the waterproof part flows to the strainer and flows in the sump pit through the strainer along waterproof part, and then utilize the water pump outwards to discharge the water in the sump pit, the problem of inspection and repair well ponding has been solved, waterproof, can play the effect of joint support to the lateral wall of inspection and repair well in the drainage, the intensity of inspection and repair well has further been strengthened, guarantee inspection and repair well safety.

The utility model discloses a prevent ponding structure for inspection shaft's further improvement lies in, and this waterproof piece's cross-section is L shapes, including mutually perpendicular's horizontal plate and vertical board, this horizontal plate is inserted and is located in the soil body around the inspection shaft and the part exposes, and this vertical board fixed connection is in the part that exposes of horizontal plate.

The utility model discloses a further improvement that is used for the ponding structure of preventing of manhole lies in, and this just a structure still includes fixed mounting in the steel grating of vertical board, and this strainer is fixed in the steel grating.

The utility model discloses a further improvement that is arranged in the ponding structure of preventing of workover well lies in, and this strainer passes through the steel wire ligature and is fixed in the steel grating.

The utility model discloses a further improvement that is used for the ponding structure of preventing of manhole lies in, and the top elevation of this waterproof piece is higher than the top elevation of the steel grating that corresponds, and the bottom elevation of this waterproof piece is less than the bottom elevation of the steel grating that corresponds.

The utility model discloses a further improvement that is used for the ponding structure of preventing of workover well lies in, and two adjacent waterproof piece laminating are connected.

The utility model discloses a further improvement that is used for the ponding structure of preventing of workover well lies in. The strainer is a flexible permeable pipe.

Drawings

Fig. 1 is a using state diagram of the anti-ponding structure for the manhole.

Figure 2 is a plan view of the utility model discloses a prevent ponding structure for the manhole.

Figure 3 is a side view of the utility model discloses an anti ponding structure for the manhole.

Detailed Description

The invention will be further explained with reference to the drawings and the specific embodiments.

Referring to fig. 1, the utility model provides a prevent ponding structure for inspection well, through install in the waterproof of inspection well inner wall in order to prevent that the rivers in the soil body around the inspection well from going into the inspection well, and then the installation sets up the strainer on the waterproof, form just supporting structure and strainer and waterproof through the mode of hanging net injection concrete and bury underground in just supporting structure, this just supporting structure plays the effect of strutting the inspection well, the water that is not blocked by the waterproof flows to the strainer and flows in the sump pit through the strainer along the waterproof, and then utilize the water pump outwards to discharge the water in the sump pit, the problem of inspection well ponding has been solved, can play the effect of joint support to the lateral wall of inspection well in waterproof, the drainage, the intensity of inspection well has further been strengthened, guarantee the inspection well safety. The utility model discloses a prevent ponding structure for inspection and repair well is explained below with the attached drawing.

Referring to fig. 1, fig. 1 is a using state diagram of the anti-ponding structure for an inspection well of the present invention. The structure of the present invention for preventing water accumulation in an inspection well will be described with reference to fig. 1.

As shown in fig. 1, the utility model discloses a prevent ponding structure for overhaul well, include:

waterproof pieces 11 attached to the inner wall of the manhole 21 and arranged at intervals in the depth direction of the manhole 21;

a strainer 121 disposed along the waterproof member 11, wherein the strainer 121 is embedded in the primary support structure at the inner wall of the manhole 21, and one end of the strainer 121 is exposed to the primary support structure to form an exposed end 1211; and

the sump 13 is disposed at the bottom of the manhole 21 corresponding to the exposed end 1211, and water penetrating into the primary support structure in the soil around the manhole 21 flows along the waterproof member 11 to the strainer 121, and then flows into the sump 13 through the exposed end 1211 and is discharged by the water pump, so as to prevent water from accumulating in the manhole 21.

Preferably, the primary support structure is formed by hanging a net and spraying concrete on the inner wall of the manhole 21, and the waterproof member 11 and the strainer 121 are embedded in the primary support structure.

As a preferred embodiment of the present invention, as shown in fig. 2 and fig. 3, the waterproof member 11 includes a horizontal plate 111 and a vertical plate 112 perpendicular to each other, the horizontal plate 111 is inserted into the soil around the manhole 21 and partially exposed, the vertical plate 112 is fixedly connected to the exposed part of the horizontal plate 111, the horizontal plate 111 and the vertical plate 112 are disposed along the inner wall periphery of the manhole 21 to achieve the purpose of water isolation, and prevent the water in the soil around from flowing into the manhole 21, but there may be a problem of water seepage at the position where the horizontal plate 111 and the vertical plate 112 are connected, so that the permeated water can flow into the water collecting pit 13 through the water filter pipe 121 and then be discharged out of the manhole 21 through the water pump.

Further, the primary support structure further includes a steel grating 12 fixedly installed on the vertical plate 112, and the strainer 121 is fixed to the steel grating 12.

Preferably, the strainer 121 is fixed in the steel grating 12 by binding steel wires, so as to prevent the strainer 121 from being displaced, thereby affecting the drainage effect.

Preferably, the steel grating 12 has a circular cross-section, so that the entire steel grating 12 is tubular, and the strainer 121 is disposed inside the steel grating 12.

Specifically, the strainer 121 is a flexible permeable tube, and includes a lining steel wire and a water absorbing layer coated on the lining steel wire, wherein the water absorbing layer absorbs water and allows water to flow along the lining steel wire to the exposed end 1211.

Specifically, the horizontal plate 111 and the vertical plate 112 are made of patterned steel plates to achieve the waterproof purpose and facilitate welding connection.

Specifically, the horizontal plate 111 and the vertical plate 112 are welded and connected, and may be installed during the excavation of the manhole 21.

Preferably, the steel grid 12 is made of steel material, and the steel grid 12 is welded to the vertical plate 112.

Further, two adjacent vertical plates 112 are connected in a fitting manner.

Specifically, the top elevation of the vertical plate 112 is higher than the top elevation of the corresponding steel grating 12, so that the steel grating 12 is conveniently welded to the vertical plate 112, and is also conveniently welded to the vertical plate 112 above, the bottom elevation of the vertical plate 112 is lower than the bottom elevation of the corresponding steel grating 12, and the vertical plate 112 is conveniently welded to the horizontal plate 111.

The utility model discloses a concrete implementation method as follows:

excavating an inspection well 21, driving a horizontal plate 111 into soil around the inspection well 21 and exposing the horizontal plate, and welding a vertical plate 112 to the exposed part of the horizontal plate 111;

fixing the water filter pipes 121 on the steel grating 12 through steel wire binding, welding the steel grating 12 on one side of the vertical plate 112 far away from the soil body, and enabling the manhole 21 to be provided with a plurality of circles of steel gratings 12 at intervals along the depth direction;

driving a horizontal plate 111 below the steel grating 12, welding a vertical plate 112 on the exposed part of the horizontal plate 111, welding the top of the vertical plate 112 with the bottom of the installed vertical plate 112, correspondingly welding the steel grating 12 on the vertical plate 112, and circulating the steps until the steel grating is installed to the bottom of the manhole 21;

pulling out one end of each water filtering pipe 121 from the side of the steel grating 12 to form an exposed end 1211, temporarily blocking the exposed end 1211 by using a closure, hanging a net on the steel grating 12 and spraying concrete, thereby forming a primary support structure around the manhole 21, and removing the closure temporarily blocking the exposed end 1211 of the water filtering pipe;

excavating a water collecting pit 13 at the bottom of the manhole 21 corresponding to the exposed end 1211, so that water in the filter pipe 121 can flow into the water collecting pit 13 through the exposed end 1211;

the horizontal plate 111 and the vertical plate 112 can enclose the periphery of the manhole 21 to prevent water of surrounding soil from permeating into the manhole 21, so that a waterproof effect is achieved, a gap exists at the connecting position of the vertical plate 112, water in the soil can leak into the primary support structure from the gap, the water flows to the water filter pipe 121 along the steel grating 12 and is absorbed by a water absorption layer outside the water filter pipe 121, then flows to the exposed end 1211 through the lining steel wire and flows into the water collecting pit 13, the water in the water collecting pit 13 is discharged by the water pump, so that a water discharging effect is achieved, and the primary support structure formed by the vertical plate 112, the horizontal plate 111 and sprayed concrete serves as a support system to support the periphery of the manhole 21, so that the effect of increasing the strength of the manhole 21 is achieved.

The present invention has been described in detail with reference to the embodiments shown in the drawings, and those skilled in the art can make various modifications to the present invention based on the above description. Therefore, certain details of the embodiments should not be construed as limitations of the invention, which are intended to be covered by the following claims.

Claims

1. A ponding prevention structure for an access well, comprising:

the waterproof pieces are attached to the inner wall of the maintenance well and arranged at intervals along the depth direction of the maintenance well;

the strainer is arranged along the waterproof piece, the strainer is embedded in a primary support structure on the inner wall of the manhole, and one end of the strainer is exposed out of the primary support structure to form an exposed end; and

the water filter pipe is arranged at the bottom of the maintenance well and corresponds to the exposed end, and water permeating into the primary support structure in soil around the maintenance well flows to the water filter pipe along the waterproof piece and then flows into the water collection pit through the exposed end and is discharged by the water pump, so that water accumulated in the maintenance well is prevented.

2. The water accumulation preventing structure for the manhole as claimed in claim 1, wherein the waterproof member has a section of L shape, and comprises a horizontal plate and a vertical plate perpendicular to each other, the horizontal plate being inserted into the soil around the manhole and partially exposed, and the vertical plate being fixedly connected to the exposed portion of the horizontal plate.

3. The water accumulation preventing structure for the manhole of claim 2, wherein the primary support structure further comprises a steel grating fixedly installed at the vertical plate, and the drainpipe is fixed to the steel grating.

4. The water accumulation preventing structure for the manhole of claim 3, wherein the drainpipe is fixed to the steel grating by wire bonding.

5. The water accumulation prevention structure for the manhole of claim 3, wherein a top elevation of the waterproof member is higher than a top elevation of the corresponding steel grating, and a bottom elevation of the waterproof member is lower than a bottom elevation of the corresponding steel grating.

6. A water accumulation prevention structure for an access well according to any one of claims 1 to 5 wherein adjacent two of said flashing members are snugly connected.

7. The water accumulation preventing structure for the manhole of claim 1, wherein the strainer is a flexible permeable pipe.