CN221921068U - Leakage water collecting and draining device for tunnel excavation area - Google Patents

Abstract

The utility model discloses a seepage water collection and drainage device for a tunnel excavation area, including a water collection box, a water collection pump and a water storage tank. The water collection box is buried behind the tunnel excavation face and is located at the lowest position of the tunnel section. A plurality of water suction pipes are provided at the lower part of the water collection box, and a one-way valve is provided in each of the water suction pipes so as to form a one-way channel from the water suction pipe to the inner cavity of the water collection box. The inlet end of the water collection pump is connected with the inner cavity of the water collection box through a pipeline, and the outlet end is connected with the water storage tank through a pipeline. A drainage pipe is provided on the water storage tank so as to discharge the water in the water storage tank to the outside of the tunnel through the drainage pump. By arranging the water collection box, the water collection pump and the water storage tank, turning on the water collection pump can allow the accumulated water to enter the water collection box through the water suction pipe and the one-way valve, and then be pumped into the water storage tank for temporary storage. When the water storage tank is full of water, the drainage pump is started to discharge the water to the outside of the tunnel. The device can realize the collection of scattered seepage water in the tunnel and centralized external discharge, which is conducive to ensuring on-site construction working conditions and safety.

Description

Leakage water collecting and draining device for tunnel excavation area

Technical Field

The utility model relates to the technical field of tunnel construction, in particular to a leakage water collecting and draining device for a tunnel excavation area.

Background

In engineering construction, a closed water delivery channel is built by digging through a mountain for water delivery or flood discharge, and is called a tunnel. Aiming at tunnel excavation construction operation in underground engineering, blasting excavation or TBM tunneling is generally adopted. The bottom of the tunnel excavation working face is greatly accumulated water due to the influence of water leakage of rock cracks in the excavation process, and site construction operation can be influenced to a certain extent. Meanwhile, because a large number of links such as illumination, support, excavation and the like in the tunnel need to be subjected to live working, the safety of field operation can be compromised to a certain extent after a large amount of accumulated water is generated.

For ponding drainage in the tunnel excavation process, the axis of the excavation section is generally expanded in the excavation process or the bottom of the axis is expanded, the excavation section is formed at intervals by combining the excavation line shape, and a water collecting well is formed at the lower part. The conventional water collecting well expansion excavation is mostly formed by blasting with small dosage, so that the engineering construction difficulty is increased to a certain extent, and the tunnel construction period is prolonged. Therefore, in combination with the working conditions and safety of site construction, it is necessary to develop a collecting and draining device for the leakage water in the tunnel excavation area so as to realize rapid collecting and draining of accumulated water at the bottom of the excavation surface.

Disclosure of utility model

The utility model aims at: aiming at the problem of accumulated water at the bottom of a working surface in the tunnel excavation construction process of underground engineering, the device for collecting and discharging the leakage water in the tunnel excavation area is provided, and the device can collect and discharge the scattered leakage water in the tunnel in a concentrated manner, thereby being beneficial to ensuring the field construction operation condition and the safety.

The utility model is realized by the following technical scheme:

The utility model provides a leakage water collecting and draining device for a tunnel excavation area, which comprises a water collecting tank, a water collecting pump and a water storage tank, wherein the water collecting tank is buried behind a tunnel excavation face and is positioned at the lowest position of a tunnel section, a plurality of water suction pipes are arranged at the lower part of the water collecting tank, a one-way valve is arranged in each water suction pipe so as to form a one-way channel from the water suction pipe to the inner cavity of the water collecting tank, the inlet end of the water collecting pump is communicated with the inner cavity of the water collecting tank through a pipeline, the outlet end of the water collecting pump is communicated with the water storage tank through the pipeline, and a drain pipe is arranged on the water storage tank so as to drain water of the water storage tank outside the tunnel through the drain pump.

In some embodiments, the lower end of the water suction pipe is a closed end, and a plurality of water suction holes are formed in the outer wall of the water suction pipe.

In some embodiments, a plastic blind ditch pipe is sleeved on the outer wall of the water suction pipe.

In some embodiments, the water suction pipe is provided with a pipe seat at one end positioned in the water collection tank, and the one-way valve is positioned in the pipe seat.

In some embodiments, the tube seat is provided with a sinking groove, the radial dimension of the sinking groove is larger than the outer diameter of the suction tube, the one-way valve is a valve plate arranged in the sinking groove, the valve plate covers the tube orifice of the suction tube, and the valve plate is rotationally connected with the tube seat so that the valve plate can be turned upwards.

In some embodiments, a connecting lug is arranged on the upper side of the valve plate, and the connecting lug is hinged with the tube seat through a pin shaft.

In some embodiments, a liquid level meter is arranged in the water storage tank, and the drainage pump is started and stopped according to the liquid level condition monitored by the liquid level meter.

In some embodiments, the water collection tank comprises a tank body and a tank cover, wherein an opening is formed on the upper side of the tank body, the tank cover is used for closing the opening, a connecting pipe is arranged on the outer wall of the tank cover, and the connecting pipe extends into the inner cavity of the water collection tank.

In some embodiments, the case and the cover are removably connected in a sealed manner.

In some embodiments, the outer side wall of the water collection tank is provided with a plurality of support plates along the transverse direction.

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

According to the utility model, the water collecting tank is embedded behind the tunnel excavation face and is positioned at the lowest position of the tunnel section, the water leakage generated by tunnel excavation is concentrated, accumulated water can enter the water collecting tank through the water suction pipe and the one-way valve by starting the water collecting pump, and is pumped into the water storage tank for temporary storage, and when the water storage tank is full of water, the water discharge pump is started to discharge the water outside the tunnel; the device can realize scattered water leakage collection and centralized discharge in the tunnel, and is favorable for ensuring the site construction operation condition and the safety.

Drawings

In order to more clearly illustrate the technical solutions of the exemplary embodiments of the present utility model, the drawings that are needed in the examples will be briefly described below, it being understood that the following drawings only illustrate some examples of the present utility model and therefore should not be considered as limiting the scope, and that other related drawings may be obtained from these drawings without inventive effort for a person skilled in the art. In the drawings:

FIG. 1 is a schematic diagram of a leakage water collecting and draining device in a tunnel excavation area in a section of a tunnel;

FIG. 2 is a schematic view of a leakage water collecting and draining device in the axial direction of a tunnel in a tunnel excavation area;

FIG. 3 is a schematic view of the header tank of the present utility model on a tunnel section;

FIG. 4 is a schematic view of a header tank in the axial direction of a tunnel in the present utility model;

FIG. 5 is a schematic drawing showing a water collection tank of the present utility model in section along a tunnel section;

Fig. 6 is a schematic view of a connection portion between a suction pipe and a header tank in the present utility model.

In the drawings, the reference numerals and corresponding part names:

1-water collecting tank, 11-tank body, 12-tank cover, 121-connecting pipe, 13-supporting plate, 2-water collecting pump, 3-water storage tank, 31-liquid level meter, 32-drain pipe, 4-water suction pipe, 41-water suction hole, 42-pipe seat, 421-sink, 43-valve plate, 431-connecting lug, 432-chamfer face, 44-pin shaft, 5-pipeline, 6-plastic blind ditch pipe, 7-backfill area, 8-tunnel section and 9-tunnel face.

Detailed Description

For the purpose of making apparent the objects, technical solutions and advantages of the present utility model, the present utility model will be further described in detail with reference to the following examples and the accompanying drawings, wherein the exemplary embodiments of the present utility model and the descriptions thereof are for illustrating the present utility model only and are not to be construed as limiting the present utility model.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application; the terms "comprising" and "having" and any variations thereof in the description of the application and the claims and the description of the drawings above are intended to cover a non-exclusive inclusion.

In the description of embodiments of the present application, the technical terms "first," "second," and the like are used merely to distinguish between different objects and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated, a particular order or a primary or secondary relationship.

Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the application. The appearances of such phrases in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those of skill in the art will explicitly and implicitly appreciate that the embodiments described herein may be combined with other embodiments.

In the description of the embodiments of the present application, the term "and/or" is merely an association relationship describing an association object, and indicates that three relationships may exist, for example, a and/or B may indicate: there are three cases, a, B, a and B simultaneously. In addition, the character "/" herein generally indicates that the front and rear associated objects are an "or" relationship.

In the embodiments of the present application, the same reference numerals denote the same components, and detailed descriptions of the same components are omitted in different embodiments for the sake of brevity. It should be understood that the thickness, length, width, etc. dimensions of the various components in the embodiments of the application shown in the drawings, as well as the overall thickness, length, width, etc. dimensions of the integrated device, are merely illustrative and should not be construed as limiting the application in any way.

In the description of the embodiments of the present application, the term "plurality" means two or more (including two), and similarly, "plural sets" means two or more (including two), and "plural sheets" means two or more (including two), unless otherwise specifically defined.

In the description of the embodiments of the present application, the orientation or positional relationship indicated by the technical terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. are based on the orientation or positional relationship shown in the drawings, and are merely for convenience of description and simplification of the description, and do not indicate or imply that the apparatus or element referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the embodiments of the present application.

In the description of the embodiments of the present application, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured" and the like should be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally formed; or may be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the embodiments of the present application will be understood by those of ordinary skill in the art according to specific circumstances.

Examples

Referring to fig. 1 to 6, the device for collecting and draining water in a tunnel excavation area provided in the embodiments of the present application includes a water collection tank 1, a water collection pump 2 and a water storage tank 3, wherein the water collection tank 1 is embedded behind a tunnel excavation face 9 and is located at the lowest position of a tunnel section 8, a plurality of water suction pipes 4 are provided at the lower part of the water collection tank 1, a one-way valve is provided in each water suction pipe 4 so as to form a one-way channel from the water suction pipe 4 to the inner cavity of the water collection tank 1, an inlet end of the water collection pump 2 is communicated with the inner cavity of the water collection tank 1 through a pipeline 5, an outlet end is communicated with the water storage tank 3 through a pipeline, and a drain pipe 32 is provided on the water storage tank 3 so as to drain water in the water storage tank 3 to the outside of a tunnel through a drain pump (not shown in the drawing).

It should be noted that, the tunnel section 8 for water delivery or flood discharge is circular, and has a top and a bottom along the vertical direction of the tunnel section when facing the tunnel excavation face 9, wherein the circular arc bottom of the tunnel section 8 is the lowest position of the tunnel section. When the tunnel excavation construction is carried out, a water accumulation area is formed at the bottom of the tunnel section 8, and the excavated water is accumulated in the area. In order to facilitate the transport of excavated muck (stone muck) out of the circular tunnel, the bottom of the tunnel needs to be backfilled with muck to form a backfill area 7, which serves as a road surface for pedestrians and vehicles to pass through. The excavated water leakage is also concentrated in this backfill area 7. The water collection tank 1 is embedded in the backfill area 7 to be positioned at the lowest position of the tunnel section 8, so that the collection of the excavated leakage water is realized. By adopting the method, the water collection pit does not need to be dug at the bottom of the tunnel, and only the water collection tank needs to be buried when the slag soil is backfilled according to the digging progress.

According to some embodiments of the present application, the lower end of the water suction tube 4 is a closed end, and a plurality of water suction holes 41 are formed on the outer wall of the water suction tube 4. After the water collecting tank is embedded in the bottom of the tunnel, the lower end of the water suction pipe is close to the bottom of the tunnel, so that sediment particles can be deposited at the lower end of the water suction pipe, and the water suction Kong Jinshui of the pipe wall is adopted by closing the lower end of the water suction pipe, so that the sediment particles can be reduced from entering the water collecting tank through the lower end of the water suction pipe. The water suction pipes 4 are uniformly distributed at the lower part of the water collection tank 1, and the lengths of the water suction pipes 4 are different relative to the outer wall of the water collection tank 1, so that the depths of the water suction pipes are different from the depths of the bottoms of the tunnels, and because sediment particles mostly settle at the bottoms, the shorter water suction pipes can be prevented from being blocked easily due to the design.

According to some embodiments of the application, a plastic blind ditch pipe 6 is sleeved on the outer wall of the water suction pipe 4. Through establish plastic blind ditch pipe at the water suction pipe overcoat, ponding can pass in the water suction pipe is got into by the water suction hole after the pore of plastic blind ditch pipe, and plastic blind ditch pipe has played certain filtration and has blockked the effect of silt to further reduce the silt granule and get into in the water suction hole and cause the jam.

The plastic blind ditch pipe 6 is a three-dimensional porous material which is formed by heating and melting thermoplastic synthetic resin, extruding fiber filaments through a nozzle, superposing the fiber filaments together, and dissolving and bonding the contact points of the fiber filaments, has the advantages of high surface aperture ratio, good water collection, large void ratio, good drainage, strong compression resistance, difficult blockage and the like, and can be reused after cleaning.

According to some embodiments of the application, the suction pipe 4 is provided with a pipe seat 42 at one end positioned in the water collecting tank 1, and the one-way valve is arranged in the pipe seat 42. Specifically, the tube seat 42 is circular, the radial dimension of the tube seat is larger than the outer diameter of the suction tube 4, and the tube seat 42 and the upper end of the suction tube 4 are welded in a sealing way to form a whole, namely, the tube seat and the suction tube together form a stepped tube body structure with thick upper part and thin lower part. In order to locate the water suction pipe at the lower part of the water collection tank during installation, a circular groove matched with the pipe seat is formed in the inner wall of the bottom of the water collection tank, so that the pipe seat can be adaptively embedded into the inner wall of the bottom of the water collection tank to a certain depth, and radial and axial location of the pipe seat is realized through the circular groove. In order to improve the tightness, the outer wall of the tube seat and the opening part of the circular groove can be welded in a sealing way.

According to some embodiments of the present application, the upper end surface of the tube holder 42 is provided with a sinking groove 421, the radial dimension of the sinking groove 421 is larger than the outer diameter of the suction tube 4, the one-way valve is a valve plate 43 disposed in the sinking groove 421, the valve plate 43 covers the tube opening of the suction tube 4, and the valve plate 43 is rotatably connected with the tube holder 42, so that the valve plate 43 can be turned upwards. Specifically, the sinking groove 421 may be circular, have a certain depth, and may be coaxially disposed with the water suction pipe.

According to some embodiments of the present application, a connection lug 431 is provided on the upper side of the valve plate 43, and the connection lug 431 is hinged to the tube seat 42 through a pin 44. Specifically, the connection lug 431 is located at one side of the valve plate 43, the pin shaft 44 is inserted into the pin hole on the connection lug 431, and two ends of the pin shaft 44 are supported in the through hole on the tube seat 42, so as to form hinged connection with the tube seat. After the water collecting pump is started, the pressure in the water collecting tank is reduced, accumulated water enters the water suction pipe and pushes the valve plate to turn upwards around the pin shaft, so that the pipe orifice of the water suction pipe is opened. After the water collecting pump is stopped, the valve plate is downwards turned over and covered on the pipe orifice of the water suction pipe by the self-rewinding pin shaft, so that the water is prevented from flowing back to the water suction pipe.

According to some embodiments of the present application, in order to increase the sealing effect of the valve plate 43 against the mouth of the barrel 4, a rubber surface is formed on the underside of the valve plate 43 (i.e., the surface in contact with the end surface of the barrel mouth). In order to smoothly turn the valve plate 43 upwards around the pin shaft 44, a chamfer 432 is arranged at the lower corner of the side of the valve plate 43 with the connecting lug 431, so that interference between the corner and the bottom plane of the sink bottom can be avoided when the valve plate rotates around the pin shaft.

According to some embodiments of the present application, a liquid level meter 31 is disposed in the water storage tank 3, and the drainage pump is started and stopped according to the liquid level condition monitored by the liquid level meter 31. The water level gauge is arranged in the water storage tank, so that the water level in the water storage tank can be monitored, and when the water level reaches a certain height, the water discharge pump is started to discharge water in the water storage tank out of the hole. After the water storage tank is emptied, the water collection pump can be ensured to be started at any time to pump water in the water accumulation area at the bottom of the tunnel to the water storage tank for temporary storage.

According to some embodiments of the present application, the water collection tank 1 includes a tank body 11 and a tank cover 12, an opening is formed on the upper side of the tank body 1, the tank cover 12 is used for closing the opening, a connection pipe 121 is arranged on the outer wall of the tank cover 12, and the connection pipe 121 extends into the inner cavity of the water collection tank. Specifically, after the water suction pipe 4 inside the water collection tank 1 is installed, the tank 11 and the tank cover 12 may form a sealed area inside. The connection pipe 121 is extended to the lower part thereof is close to the inner wall of the bottom of the water collecting tank 1, the upper end of the connection pipe 121 is used for being connected with the pipe 5. It should be noted that, since the backfill area 7 has vehicles running thereon, the pipe needs to be protected during use, and the pipe can be protected by a channel steel cover.

According to some embodiments of the application, the case 11 and the case cover 12 are connected in a sealing manner in a detachable manner. The design can be convenient for install the water suction pipe in the header tank inside, and open the case and clear up the inside region. Specifically, the case 11 and the case cover 12 may be connected by bolts, and a rubber gasket (not shown) may be provided between the contact surfaces of the case 11 and the case cover 12, so that the sealing effect of the case cover to the case edge may be increased.

According to some embodiments of the application, the outer side wall of the header tank 1 is provided with a plurality of support plates 13 in the lateral direction. Because the header tank 1 is buried in the tunnel bottom dregs backfill region, through setting up backup pad 13, the backup pad 13 of both sides can play certain supporting effect to the header tank when burying header tank 1, lightens the pressure that the water pipe lower extreme bore that absorbs, and when the position that needs to remove the header tank simultaneously, can conveniently take out the header tank from dregs through backup pad 13 of both sides.

According to some embodiments of the present application, the water collection tank 1 may be rectangular, and the length, width and height of the water collection tank 1 may be 1.2×0.8m0.4m, when the water collection tank is embedded in the backfill slag at the bottom of the tunnel, the length direction of the water collection tank 1 is along the axial direction of the tunnel, the middle line of the width direction of the water collection tank 1 coincides with the axial line of the tunnel as much as possible, and the height direction of the water collection tank 1 is along the vertical direction. The water collection tank 1 is embedded in the lowest part in the middle of the tunnel section 8, so that the water collection tank is not easy to crush.

According to some embodiments of the application, the distance between the water collection tank 1 and the tunnel excavation face 9 along the axial direction of the tunnel when the water collection tank is embedded is 30-50 meters, and the water collection tank 1 can move to the front of the tunnel and be embedded again as required along with the continuous forward excavation of the tunnel.

The foregoing description of the embodiments has been provided for the purpose of illustrating the general principles of the utility model, and is not meant to limit the scope of the utility model, but to limit the utility model to the particular embodiments, and any modifications, equivalents, improvements, etc. that fall within the spirit and principles of the utility model are intended to be included within the scope of the utility model.

Claims (10)

1. The utility model provides a device is arranged to tunnel excavation district percolating water collection, its characterized in that includes header tank, catch pump and storage water tank, the header tank buries in tunnel excavation face rear and is located tunnel section minimum position department, the header tank lower part is equipped with many water pipes, every be equipped with the check valve in the water pipe that absorbs water to make from the water pipe that absorbs water to header tank inner chamber formation one-way passageway, the entry end of catch pump passes through pipeline and header tank inner chamber intercommunication, and the exit end passes through pipeline and storage water tank intercommunication, be equipped with the drain pipe on the storage water tank so that the drain pump is outside the tunnel with the water of storage water tank.

2. The device for collecting and draining water in a tunnel excavation area according to claim 1, wherein the lower end of the water suction pipe is a closed end, and a plurality of water suction holes are formed in the outer wall of the water suction pipe.

3. The tunnel excavation area leakage water collecting and draining device according to claim 2, wherein a plastic blind ditch pipe is sleeved on the outer wall of the water suction pipe.

4. A tunnel excavation area leakage water collecting and draining device according to any one of claims 1-3, wherein the water suction pipe is provided with a pipe seat at one end positioned in the water collecting tank, and the one-way valve is arranged in the pipe seat.

5. The device for collecting and draining water in tunnel excavation area according to claim 4, wherein the tube seat is provided with a sinking groove, the radial dimension of the sinking groove is larger than the outer diameter of the water suction tube, the one-way valve is a valve plate arranged in the sinking groove, the valve plate covers the mouth of the water suction tube, and the valve plate is rotationally connected with the tube seat so that the valve plate can be turned upwards.

6. The device for collecting and draining water in a tunnel excavation area according to claim 5, wherein a connecting lug is arranged on the upper side of the valve plate and is hinged with the pipe seat through a pin shaft.

7. A tunnel excavation area leakage water collecting and draining device according to any one of claims 1-3, wherein a liquid level meter is arranged in the water storage tank, and the draining pump is started and stopped according to the liquid level condition monitored by the liquid level meter.

8. A tunnel excavation area leakage water collecting and draining device according to any one of claims 1-3, wherein the water collecting tank comprises a tank body and a tank cover, an opening is formed on the upper side of the tank body, the tank cover is used for closing the opening, a connecting pipe is arranged on the outer wall of the tank cover, and the connecting pipe extends into the inner cavity of the water collecting tank.

9. The tunnel excavation area leakage water collecting and draining device of claim 8, wherein the box body and the box cover are in sealing connection in a detachable mode.

10. The tunnel excavation area leakage water collecting and draining device according to claim 8, wherein a plurality of supporting plates are arranged on the outer side wall of the water collecting tank along the transverse direction.