CN219548915U

CN219548915U - Tunnel construction drainage device

Info

Publication number: CN219548915U
Application number: CN202320737837.9U
Authority: CN
Inventors: 齐桂花; 王昱; 张景平; 张朝辉; 唐天铎; 范逸扬; 田苗
Original assignee: Water Resources Utilization Center Of Taolai River Basin Water Resources Department Of Gansu Province; Lanzhou University of Technology
Current assignee: Water Resources Utilization Center Of Taolai River Basin Water Resources Department Of Gansu Province; Lanzhou University of Technology
Priority date: 2023-04-06
Filing date: 2023-04-06
Publication date: 2023-08-18
Anticipated expiration: 2033-04-06

Abstract

The utility model discloses a tunnel construction drainage device which comprises drainage ditches, sedimentation tanks, water collecting wells and a back flushing mechanism, wherein the drainage ditches are arranged on two sides of a tunnel, the middle of the ground of the tunnel is high and low, the sedimentation tanks and the water collecting wells are sequentially communicated in the drainage direction of the drainage ditches, filter lifting baskets are arranged in the sedimentation tanks and the water collecting wells, the back flushing mechanism is arranged in the water collecting wells, the back flushing mechanism can back flush the filter lifting baskets in the water collecting wells, and a grid filter plate is arranged above the sedimentation tanks. According to the utility model, the middle of the ground of the tunnel is high and low on two sides, so that water in the tunnel body is conveniently drained into the drainage ditch; through setting up grid filter plate, sedimentation tank with the sump pit can carry out multistage filtration to big debris, the heavy object in the aquatic to reach quick infiltration, drainage, set up back flush mechanism, avoid the sump pit to filter the basket and block up, influence the filter effect, further guarantee the filtering quality to aquatic debris, guarantee the unobstructed nature of drainage.

Description

Tunnel construction drainage device

Technical Field

The utility model relates to the technical field of tunnel construction, in particular to a drainage device for tunnel construction.

Background

In hydraulic engineering, in order to transport water or flood, a closed water transport channel is built by penetrating through mountains and excavating frequently, which is called a hydraulic tunnel, and in the tunnel construction process, the problems of water seepage, water burst and the like in the tunnel are frequently encountered, so that conditions of pavement softening, working surface water accumulation and the like in the tunnel are caused, and great influence is caused on the construction process and the construction safety. Therefore, a drainage system must be provided during tunnel construction.

Among the prior art, patent document of application number CN209724412U provides such a tunnel drainage system for among the tunnel work progress, including portable drainage device, escape canal and collector well, subaerial excavation has the escape canal unanimous with tunnel extending direction within the tunnel, along the direction that the escape canal extends, subaerial a plurality of collector wells of having arranged adjacent escape canal, every collector well open end all communicates with the escape canal, portable drainage device includes the frame, buffer tank and sewage pump, sewage pump water inlet and delivery port are connected with respectively and inhale water pipe, the drain pipe, the end of drain pipe stretches into within the buffer tank, buffer tank lateral wall is connected with the drain pipe, install control gate valve on the drain pipe. At present, the drainage structure of the large water burst tunnel is mainly arranged by adopting a single-system drainage structure, and the problems that the drainage efficiency is low, the underground drainage pipeline is easy to block, the underground drainage pipeline is difficult to clean after the underground drainage pipeline is blocked and the like exist in the drainage process, so that the normal construction of the tunnel is seriously influenced.

Disclosure of Invention

The utility model aims to provide a drainage device for tunnel construction, which solves the problems of the prior art, and ensures that the drainage device is not easy to block, is subjected to multistage filtration and is convenient to clean.

In order to achieve the above object, the present utility model provides the following solutions:

the utility model provides a tunnel construction drainage device which comprises drainage ditches, sedimentation tanks, a water collecting well and a back flushing mechanism, wherein the drainage ditches are arranged on two sides of a tunnel, the middle of the ground of the tunnel is high and low, the sedimentation tanks and the water collecting well are sequentially communicated in the drainage direction of the drainage ditches, filter lifting baskets are arranged in the sedimentation tanks and the water collecting well, the back flushing mechanism is arranged in the water collecting well, the back flushing mechanism can back flush the filter lifting baskets in the water collecting well, and a grid filter plate is arranged above the sedimentation tanks.

Preferably, the grid filter plate is covered with a sedimentation tank and a drainage ditch which is obliquely arranged on the bottom surface of one section of the upstream direction of the sedimentation tank, the bottom surface of the drainage ditch between the sedimentation tank and the water collecting well is obliquely arranged, and the water collecting well is in a low position.

Preferably, a fine filter tank is arranged at the downstream of the water collecting well, a fine filter basket is arranged in the fine filter tank, an inclined filter plate is arranged on the water inlet side of the fine filter basket, a filter plate matched with the drainage ditch is arranged on the water outlet side in a protruding mode, a lifting rod is connected to the bottom of the filter plate, and a drainage pump is arranged below the inclined filter plate.

Preferably, the back flushing mechanism comprises a back flushing pipe and a drainage pump, the bottom end of the fine filtering tank is communicated with the water collecting well through a hose, one end of the back flushing pipe is connected with the drainage pump, the other end of the back flushing pipe is positioned at the bottom of the water collecting well and is provided with a filter screen, and the back flushing pipe is a hose and is provided with an electromagnetic valve.

Preferably, the back flushing pipe is communicated with a drain pipe through a tee joint, the drain pipe extends to the water outlet side of the fine filter tank, and the drain pipe is a hose and is provided with an electromagnetic valve.

Preferably, a grid partition plate and a lifting rod are arranged in the middle of the filtering basket in the water collecting well, the top of the grid partition plate is higher than the top surface of the water collecting well, the grid partition plate is used for filtering light sundries, and the hose is located on the water filtering side of the grid partition plate.

Preferably, the bottom surface of the drainage ditch between the water collecting well and the fine filtering tank is obliquely arranged, and the fine filtering tank is positioned at a low position; the drainage pump is a bidirectional drainage pump.

Preferably, a lifting rod is arranged in the middle of the filtering basket in the sedimentation tank and used for filtering large-particle weights.

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

according to the utility model, the middle of the ground of the tunnel is high and low on two sides, so that water in the tunnel body is conveniently drained into the drainage ditch; by arranging the grid filter plate, the sedimentation tank and the water collecting well, large sundries and heavy objects in water can be subjected to multistage filtration, so that rapid water seepage and drainage can be achieved, a drainage ditch is prevented from being blocked, and the drainage effect is improved; the back flushing mechanism is arranged, so that the blockage of the filter basket in the water collecting well is avoided, the filter basket is convenient to take out and clean sundries, the filtering effect is influenced, the filtering performance of the sundries in water is further ensured, and the smoothness of drainage is ensured.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of the structural layout of a tunnel construction drainage device of the present utility model;

FIG. 2 is a schematic top view of the tunnel construction drainage device of the present utility model;

FIG. 3 is a schematic diagram showing the overall structural layout of the tunnel construction drainage device of the present utility model;

wherein: 1-drainage ditch, 2-sedimentation tank, 3-water collecting well, 4-fine filter tank, 5-filter basket, 6-lifting rod, 7-grid filter plate, 8-well lid, 9-fine filter basket, 10-grid baffle, 11-drainage pump, 12-back flushing pipe, 13-drainage pipe and 14-solenoid valve.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by a person skilled in the art based on the embodiments of the utility model without any inventive effort, are intended to fall within the scope of the utility model.

The utility model aims to provide a drainage device for tunnel construction, which solves the problems in the prior art, and is difficult to block, multistage in filtration and convenient to clean.

In order that the above-recited objects, features and advantages of the present utility model will become more readily apparent, a more particular description of the utility model will be rendered by reference to the appended drawings and appended detailed description.

As shown in fig. 1 to 3: the embodiment provides a tunnel construction drainage device, including escape canal 1, sedimentation tank 2, sump pit 3 and back flush mechanism, escape canal 1 sets up in the both sides of tunnel and the high both sides are low in the middle of the ground of tunnel, and the direction along the drainage of escape canal 1 is last to be communicated in proper order and is provided with sedimentation tank 2 and sump pit 3, all is provided with in sedimentation tank 2 and the sump pit 3 and filters basket 5, is provided with back flush mechanism in the sump pit 3, and back flush mechanism can carry out the back flush to the filtration basket 5 in the sump pit 3, and sedimentation tank 2 top is provided with grid filter plate 7.

The grid filter plate 7 is covered with a sedimentation tank 2 and a drainage ditch 1 which is obliquely arranged on the bottom surface of one section of the upstream direction of the sedimentation tank 2, the bottom surface of the drainage ditch 1 between the sedimentation tank 2 and the water collecting well 3 is obliquely arranged, and the water collecting well 3 is in a low position. A lifting rod 6 is arranged in the middle of the filtering basket 5 in the sedimentation tank 2 and is used for filtering large-particle heavy objects.

The low reaches of sump pit 3 are provided with a thin filtering ponds 4, are provided with thin filtration basket 9 in the thin filtering ponds 4, and the side that intakes of thin filtration basket 9 is provided with a slope filter plate, goes out the water side protrusion and is provided with a filter plate with escape canal 1 assorted, bottom are connected with lift rod 6, thoroughly filter the water that gets into and discharge thin filtering ponds 4, are provided with drain pump 11 below the filter plate of slope, use the water after filtering, avoid damaging drain pump 11 blade.

The back flush mechanism comprises a back flush pipe 12 and a drainage pump 11, the bottom end of the fine filter tank 4 is communicated with the water collecting well 3 through a hose, one end of the back flush pipe 12 is connected with the drainage pump 11, the other end of the back flush pipe is positioned at the bottom of the water collecting well 3 and is provided with a filter screen, sundries are prevented from damaging blades of the drainage pump 11, meanwhile, the water outlet pressure of the back-discharged water is increased, the grid partition board 10 is convenient to clean, and an electromagnetic valve 14 is arranged on the back flush pipe 12, so that electric control operation is convenient. The back flushing pipe 12 is communicated with a drain pipe 13 through a tee joint, the drain pipe 13 extends to the water outlet side of the fine filter tank 4, the drain pipe 13 and the back flushing pipe 12 are flexible pipes which are convenient to place, and electromagnetic valves 14 are arranged, so that electric control operation is facilitated.

The middle part of the filtering basket 5 in the water collecting well 3 is provided with a grating baffle 10 and a lifting rod 6, the top of the grating baffle 10 is higher than the top surface of the water collecting well 3, the grating baffle 10 is used for filtering light sundries, and a hose is positioned on the water filtering side of the grating baffle 10. The bottom surface of the drain ditch 1 between the water collecting well 3 and the fine filtering tank 4 is obliquely arranged, and the fine filtering tank 4 is positioned at a low position; the drainage pump 11 is a bidirectional drainage pump, and drains when the water flow rate is large; when the grid partition plate 10 is blocked, the grid partition plate 10 is reversely opened, and water is thrown out of the hose by water pressure to spray water to clean the grid partition plate 10.

The tunnel construction drainage device of this embodiment is as follows to the processing of rivers:

the water flow with sundries firstly filters out oversized particulate matters through the primary of the grid filter plate 7, then flows into the sedimentation tank 2 along the drainage ditch 1 to sediment and filter large particulate weights (stones, sand stones and the like), the sedimentation tank 2 overflows into the water collecting well 3 to be blocked by the grid partition plate 10, light sundries (leaves, wood dust, plastic bags and the like) can be filtered, if the grid partition plate 10 is blocked by the sundries, the reverse drainage of the drainage pump 11 can be controlled to disorderly wash the grid partition plate 10, and the filtering function is recovered. After water in the water collecting well 3 overflows to the fine filtering tank 4 for secondary sedimentation and filtering, the water can be discharged, and if the water flow is large, the water discharging pump 11 can be started for water discharging assistance. If the sundries are too much, the well lid 8 needs to be opened regularly, the filtering basket 5 is cleaned, the filtering basket 5 is provided with the lifting rod 6, the sundries are convenient to take out and clean, the filtering performance of the sundries in water is further guaranteed, and the smoothness of drainage is guaranteed.

The principles and embodiments of the present utility model have been described in this specification with reference to specific examples, the description of which is only for the purpose of aiding in understanding the method of the present utility model and its core ideas; also, it is within the scope of the present utility model to be modified by those of ordinary skill in the art in light of the present teachings. In view of the foregoing, this description should not be construed as limiting the utility model.

Claims

1. The utility model provides a tunnel construction drainage device which characterized in that: including escape canal, sedimentation tank, sump pit and back flush mechanism, the escape canal sets up in the both sides of tunnel just high both sides are low in the middle of the ground of tunnel, follow in proper order the intercommunication has been provided with in the direction of escape canal drainage the sedimentation tank with the sump pit, the sedimentation tank with all be provided with the filtration basket in the sump pit, be provided with in the sump pit back flush mechanism, back flush mechanism can be right the filtration basket in the sump pit carries out the back flush, the sedimentation tank top is provided with the grid filter plate.

2. The tunnel construction drainage device according to claim 1, wherein: the grid filter plate is covered with the sedimentation tank with the escape canal that one section bottom surface slope set up of sedimentation tank upstream direction, the sedimentation tank with the bottom surface of escape canal between the sump pit also inclines to set up, just the sump pit is in the low level.

3. The tunnel construction drainage device according to claim 1, wherein: the low reaches of sump pit are provided with a thin filtering ponds, be provided with thin filtration basket in the thin filtering ponds, thin filtration basket's water inlet side is provided with a slope filter plate, play water side protrusion be provided with one with escape canal assorted filter plate, bottom are connected with the pull rod, the filter plate below of slope is provided with the drain pump.

4. A tunnel construction drainage apparatus according to claim 3, wherein: the back flush mechanism comprises a back flush pipe and a drainage pump, the bottom end of the fine filter tank is communicated with the water collecting well through a hose, one end of the back flush pipe is connected with the drainage pump, the other end of the back flush pipe is positioned at the bottom of the water collecting well and is provided with a filter screen, and the back flush pipe is a hose and is provided with an electromagnetic valve.

5. The tunnel construction drainage apparatus according to claim 4, wherein: the back flushing pipe is communicated with a drain pipe through a tee joint, the drain pipe extends to the water outlet side of the fine filter tank, and the drain pipe is a hose and is provided with an electromagnetic valve.

6. The tunnel construction drainage apparatus according to claim 4, wherein: the middle part of the filtering basket in the water collecting well is provided with a grid partition plate and a lifting rod, the top of the grid partition plate is higher than the top surface of the water collecting well, the grid partition plate is used for filtering light sundries, and the hose is located on the water filtering side of the grid partition plate.

7. A tunnel construction drainage apparatus according to claim 3, wherein: the bottom surface of the drainage ditch between the water collecting well and the fine filtering tank is obliquely arranged, and the fine filtering tank is positioned at a low position; the drainage pump is a bidirectional drainage pump.

8. The tunnel construction drainage device according to claim 1, wherein: the middle part of the filtering basket in the sedimentation tank is provided with a lifting rod and is used for filtering large-particle heavy objects.