CN210509282U - Reverse slope tunnel construction drainage system - Google Patents

Reverse slope tunnel construction drainage system Download PDF

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Publication number
CN210509282U
CN210509282U CN201921095524.8U CN201921095524U CN210509282U CN 210509282 U CN210509282 U CN 210509282U CN 201921095524 U CN201921095524 U CN 201921095524U CN 210509282 U CN210509282 U CN 210509282U
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China
Prior art keywords
water
pump
tank
water collecting
reverse slope
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CN201921095524.8U
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Chinese (zh)
Inventor
杨辉
姚锐丹
何远义
赵全江
朱吉斌
熊成宇
汪前伟
宋宝顺
何銛
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Fourth Engineering Co Ltd of CCCC First Highway Engineering Co Ltd
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Fourth Engineering Co Ltd of CCCC First Highway Engineering Co Ltd
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Abstract

The utility model discloses a reverse slope tunnel construction drainage system belongs to construction drainage system field, deposit drainage device and drain pipe outside portable immersible pump, portable water tank pump station, sump pit device, the hole. The movable submersible pump is connected with the movable water tank pump station through a drain pipe. The movable water tank pump station is connected with the sump device through a drain pipe. The water collecting pit device is connected with the precipitation drainage device outside the hole through a drainage pipe. The water inlet of the movable submersible pump is arranged at the bottom of the tunnel face of the reverse slope tunnel construction. The utility model discloses low in cost facilitates the use to but reuse can realize near the tunnel face ponding of adverse slope tunnel in time discharging, guarantees face state stability, reduces the construction risk.

Description

Reverse slope tunnel construction drainage system
Technical Field
The utility model relates to a construction drainage system field especially relates to a reverse slope tunnel construction drainage system.
Background
In the construction process of the reverse slope tunnel, underground water and construction water are collected towards the face, so that surrounding rocks at the lower part of the face are in a water soaking state, the surrounding rocks are easily softened and unstable, the life safety of operators is seriously threatened, and the problem of water in the face area is always troubled by the engineers. Meanwhile, the progress of construction is seriously influenced due to frequent water accumulation on the tunnel face, so that the construction efficiency is reduced, the construction period is prolonged, and the like.
Therefore, in order to better discharge underground water and construction water or supply construction use in the construction process of the reverse slope tunnel, an efficient drainage system needs to be designed, so that the construction process of the reverse slope tunnel is safer, the construction efficiency is higher, the construction engineering of the reverse slope tunnel can be completed in advance, and the safety of constructors is improved.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a reverse slope tunnel construction drainage system to in solving current reverse slope tunnel work progress, face lower part country rock is in the state of bubble water, makes the country rock soft easily, and is unstable, seriously threatens operation personnel's life safety, drags the technical problem of time limit for a project etc. simultaneously.
The utility model provides a reverse slope tunnel construction drainage system, deposits drainage device and drain pipe outside including portable immersible pump, portable water tank pump station, sump pit device, the hole, portable immersible pump passes through the drain pipe and is connected with the portable water tank pump station, the portable water tank pump station is connected with the sump pit device through the drain pipe, the sump pit device deposits drainage device through the drain pipe outside with the hole and is connected, the water inlet setting of portable immersible pump is in the face bottom of reverse slope tunnel construction, portable immersible pump, portable water tank pump station and sump pit device all set up in the hole in reverse slope tunnel.
Further, the mobile water tank pump station includes storage water tank, water inlet valve, storage water tank fixed block and storage water tank suction pump, the storage water tank fixed block sets up in storage water tank bottom both sides, the water inlet valve sets up the water inlet department at the storage water tank, the storage water tank communicates with the sump pit device through storage water tank suction pump.
Furthermore, the number of the water inlets of the water storage tank is three, water inlet valves are arranged on the three water inlets, fixing holes are formed in the water storage tank fixing block, and reinforcing steel bars penetrate through the fixing holes to be driven into the underground fixed water storage tank.
Furthermore, the number of the water collecting pit devices is set to be 2-3, the interval between every two water collecting pit devices is 300-400 meters, and the first water collecting pit device is arranged 500 meters away from the tunnel entrance of the reverse slope.
Further, the sump device comprises a sump inlet pipe, a sump, a partition plate, a catchment sedimentation tank, a top grid plate, a rod-type liquid level sensor, a control box, a first sump suction pump, a second sump suction pump, a third sump suction pump, a suction pump valve, a water outlet manifold and a suction pump fixed bottom, one end of the sump inlet pipe is arranged above the sump, the other end of the sump inlet pipe is connected with a mobile water tank pump station, the partition plate is arranged between the sump and the catchment sedimentation tank, a water through hole is formed in the partition plate, the sump and the catchment sedimentation tank are formed by digging underground under the surface of a reverse slope tunnel, the top grid plate is arranged above the sump and the catchment sedimentation tank, the rod-type liquid level sensor is arranged in the catchment sedimentation tank and connected with the control box, the first sump suction pump, the second sump suction pump and the third sump suction pump are respectively connected with the control box, and the water inlet of the first suction pump of catch basin, catch basin second suction pump and the third suction pump of catch basin all sets up in the sedimentation tank catchments, the delivery port of the first suction pump of catch basin, catch basin second suction pump and the third suction pump of catch basin all communicates with the water collection manifold, and all is provided with the suction pump valve, the bottom of the first suction pump of catch basin, catch basin second suction pump and the third suction pump of catch basin all is provided with suction pump unable adjustment base.
Furthermore, a water pump controller is arranged in the control box, the water pump controller is of the type SM5-A1-2200, the water pump controller receives a liquid level signal of a rod type liquid level sensor to control the water pump to start, and the rod type liquid level sensor uses a Wolk LHS connecting rod floating ball sensor.
Further, the outer sediment drainage device in hole includes first sedimentation tank, first baffle, second sedimentation tank, second baffle and third sedimentation tank, first sedimentation tank, second sedimentation tank and third sedimentation tank all dig the ground surface down and form, first baffle sets up between first sedimentation tank and second sedimentation tank, the second baffle sets up between second sedimentation tank and third sedimentation tank, all be provided with on first baffle and the second baffle and filter the water service mouth, the position of the filtration water service mouth on the second baffle is higher than the filtration water service mouth position of first baffle.
Furthermore, a temporary water collecting well is arranged at the bottom of the face of the reverse slope tunnel construction, and underground water and construction water are collected by the temporary water collecting well and are pumped to a mobile water tank pump station by a mobile submersible pump.
Furthermore, a plurality of water collecting channels are arranged on the side edge of the water collecting pit device, and the water collecting channels collect the underground water of the reverse slope tunnel to flow into the water collecting pit device.
The utility model adopts the above technical scheme, the utility model discloses following technological effect has:
the utility model discloses low in cost, facilitate the use to but reuse can realize near the tunnel face ponding of adverse slope tunnel in time discharging, guarantees face stable state, reduces the construction risk, the utility model discloses make safer in the adverse slope tunnel work progress, the efficiency of construction is higher, can accomplish adverse slope tunnel construction engineering in advance, improve constructor's security and use the portable water tank pump station simultaneously, can remove according to the removal of construction and draw water, be fit for the use in the adverse slope tunnel construction process, have real-time removal's flexibility, use the portable water tank pump station simultaneously and collect groundwater, simultaneously can real-time supply construction needs the water to use.
Drawings
Fig. 1 is a schematic diagram of the system structure of the present invention.
Figure 2 is the utility model discloses remove water tank pump station structure schematic diagram.
Fig. 3 is a schematic structural view of the sump device of the present invention.
Fig. 4 is the schematic diagram of the water pump of the present invention.
Fig. 5 is a schematic structural view of the water drainage device for extra-tunnel deposition.
Reference numbers in the figures: 1. a mobile submersible pump; 2. moving a water tank pump station; 2.1, a water storage tank; 2.2, a water inlet valve; 2.3, fixing blocks of the water storage tank; 2.4, a water storage tank and a water pump; 3. a sump means; 3.1, a water inlet pipe of a sump; 3.2, a water collecting tank; 3.3, a partition plate; 3.4, a water collecting sedimentation tank; 3.5, a top grid plate; 3.6, a rod type liquid level sensor; 3.7, a control box; 3.8, a first water pump of the water collecting tank; 3.9, a second water pump of the water collecting tank; 3.10, a third water pump of the water collecting tank; 3.11, a water pump valve; 3.12, an effluent collecting pipe; 3.13, fixing a base by using a water pump; 4. a water discharging device for precipitation outside the hole; 4.1, a first sedimentation tank; 4.2, a first clapboard; 4.3, a second sedimentation tank; 4.4, a second clapboard; 4.5, a third sedimentation tank; 5. and a water discharge pipe.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail below with reference to the accompanying drawings and by referring to preferred embodiments. It should be understood, however, that the numerous specific details set forth in the specification are merely set forth to provide a thorough understanding of one or more aspects of the present invention, which may be practiced without these specific details.
Referring to fig. 1, the utility model provides a reverse slope tunnel construction drainage system, including portable immersible pump 1, portable water tank pump station 2, sump pit device 3, the outer drainage device 4 and the drain pipe 5 of deposiing of hole. Portable immersible pump 1 passes through drain pipe 5 and is connected with portable water tank pump station 2, portable water tank pump station 2 is connected with sump pit device 3 through drain pipe 5, sump pit device 3 is connected with the outer drainage device 4 that deposits of hole through drain pipe 5, portable immersible pump 1's water inlet setting is in the face bottom of adverse slope tunnel construction, portable immersible pump 1, portable water tank pump station 2 and sump pit device 3 all set up in the hole in adverse slope tunnel.
The quantity of mobile water tank pump station 2 can increase the setting according to the distance needs on scene, and the interval generally is 500 meters intervals and sets up one, and portable immersible pump 1 uses current immersible pump, at the fixed iron plate in the bottom of immersible pump simultaneously, then four universal wheels of welding in iron plate bottom, realize portable. The bottom of the movable water tank pump station 2 can be provided with wheels, so that the movable water tank pump station is convenient to move at ordinary times. The movable submersible pump 1 pumps water at the bottom of the prop surface to the movable water tank pump station 2, the number of the movable submersible pumps 1 is set according to the amount of underground water, and one movable water tank pump station 2 can be connected with three movable submersible pumps 1 simultaneously. The movable water tank pump station 2 pumps water into the sump device 3, and then pumps water out of the sump device 3 to the sediment drainage device 4 for sediment and discharge.
The embodiment of the utility model provides an in, remove water tank pump station 2 and include storage water tank 2.1, water inlet valve 2.2, storage water tank fixed block 2.3 and storage water tank suction pump 2.4, storage water tank fixed block 2.3 sets up in storage water tank 2.1 bottom both sides, water inlet valve 2.2 sets up in storage water tank 2.1's water inlet department, storage water tank 2.1 is through storage water tank suction pump 2.4 and sump pit device 3 intercommunication. The quantity of the water inlet of storage water tank 2.1 sets up threely, all is provided with water inlet valve 2.2 on the three water inlet, be provided with the fixed orifices on the storage water tank fixed block 2.3, use the reinforcing bar to pass the fixed orifices and squeeze into underground fixed storage water tank 2.1. The water storage tank 2.1 is made of a 9m3 movable water tank (1.5m multiplied by 3m multiplied by 2m) and made of metal materials. The water inlet valve 2.2 is a manual rotary valve and is arranged at the water inlet, if the water inlet is not used, the water inlet valve 2.2 on the water inlet is closed, and when the water inlet is used, the water inlet is opened. The water storage tank fixing block 2.3 fixes the water storage tank 2.1 by beating a steel bar or a fixing bolt to prevent sliding. The water storage tank and the water pump 2.4 also use a submersible pump.
In the embodiment of the present invention, the number of the water collecting pit devices 3 is set to 2-3, the interval between each water collecting pit device 3 is 300 + 400 meters, and the first water collecting pit device 3 is disposed 500 meters away from the tunnel opening of the reverse slope. Sump pit device 3 includes sump pit inlet tube 3.1, catch basin 3.2, baffle 3.3, catchment sedimentation tank 3.4, top grid plate 3.5, rod-type level sensor 3.6, control box 3.7, the first suction pump 3.8 of catch basin, catch basin second suction pump 3.9, catch basin third suction pump 3.10, suction pump valve 3.11, play water header pipe 3.12 and suction pump fixed bottom 3.13, the one end setting of catch basin inlet tube 3.1 is in the top of catch basin 3.2, and the other end is connected with mobile tank pump station 2, baffle 3.3 sets up between catch basin 3.2 and catchment sedimentation tank 3.4, and is provided with the limbers on the baffle 3.3, catch basin 3.2 and catchment sedimentation tank 3.4 all dig the underground and form under the adverse slope tunnel surface. The top grid plate 3.5 is arranged above the water collecting tank 3.2 and the water collecting sedimentation tank 3.4, and the rod type liquid level sensor 3.6 is arranged in the water collecting sedimentation tank 3.4 and is connected with the control box 3.7. The first suction pump 3.8 of catch basin, catch basin second suction pump 3.9 and catch basin third suction pump 3.10 are connected with control box 3.7 respectively, and the water inlet of the first suction pump 3.8 of catch basin, catch basin second suction pump 3.9 and catch basin third suction pump 3.10 all sets up in catchment sedimentation tank 3.4, the delivery port of the first suction pump 3.8 of catch basin, catch basin second suction pump 3.9 and catch basin third suction pump 3.10 all communicates with water collection pipe 3.12, and all is provided with suction pump valve 3.11, the bottom of the first suction pump 3.8 of catch basin, catch basin second suction pump 3.9 and catch basin third suction pump 3.10 all is provided with suction pump unable adjustment base 3.13. The water collecting tank 3.2 collects the water pumped up from the mobile water tank pump station 2, and simultaneously, the water is precipitated after passing through the partition plate 3.3. Silt can not directly enter the water collecting sedimentation tank 3.4 along with water, so that the pumped water is cleaner, and the blocking condition in the pumping process is prevented. The top grid plate 3.5 serves a protective function to prevent workers or tools from falling into the catchment basin 3.2 and the catchment sedimentation basin 3.4. The control box 3.7 is arranged as a square metal box and is connected with an external 220V mains supply. The first water pump 3.8 of the water collecting tank, the second water pump 3.9 of the water collecting tank and the third water pump 3.10 of the water collecting tank are all controlled by the control box 3.7 at the same time.
A water pump controller is arranged in the control box 3.7, the water pump controller is of the type SM5-A1-2200, the water pump controller receives a liquid level signal received by the rod type liquid level sensor 3.6 and controls the water pump to start, and the rod type liquid level sensor 3.6 uses a Wolk LHS connecting rod floating ball sensor. When the water level detected by the rod-type liquid level sensor 3.6 is less than 1 meter, the water pump controller controls one water pump to start, when the water level is more than 1 meter and less than two meters, the two water pumps are started, and when the water level is more than 2 meters and less than 3 meters, the three water pumps are started. Other suction pumps of this application all are connected with the commercial power through the switch, manual control switch.
The embodiment of the utility model provides an in, sediment drainage device 4 includes first sedimentation tank 4.1, first baffle 4.2, second sedimentation tank 4.3, second baffle 4.4 and third sedimentation tank 4.5 outside the hole, first sedimentation tank 4.1, second sedimentation tank 4.3 and third sedimentation tank 4.5 all dig the ground surface under and form, first baffle 4.2 sets up between first sedimentation tank 4.1 and second sedimentation tank 4.3, second baffle 4.4 sets up between second sedimentation tank 4.3 and third sedimentation tank 4.5, all be provided with on first baffle 4.2 and the second baffle 4.4 and filter the water service mouth, the position of the filtration water service mouth on the second baffle 4.4 is higher than the filtration water service mouth position of first baffle 4.2. After three layers of sedimentation, the water at the water outlet of the third sedimentation tank 4.5 meets the discharge standard. Both the first 4.2 and the second 4.4 partitions are built using bricks. The size of the first 4.1, second 4.3 and third settling tanks is set to 4 x 3 x 4.
The embodiment of the utility model provides an in, the face bottom of adverse slope tunnel construction is provided with interim sump pit, and interim sump pit collects groundwater and construction water and supplies portable immersible pump 1 to take out to mobile water tank pump station 2. The temporary water collecting well can collect underground water quickly, so that water pumping is more efficient, and meanwhile, management personnel are reduced.
In the embodiment of the utility model provides an in, the side of sump pit device 3 is provided with a plurality of catchment canals, and the catchment canal collects the ground water flow in the adverse slope tunnel to in sump pit device 3. The sump device 3 simultaneously collects a lateral underground water so as to keep the ground of the reverse slope tunnel dry.
When the front excavation of the inclined shaft face is within the range of 500m
The reverse slope drainage scheme is as follows: and pumping and discharging the underground water collected on the tunnel face into a movable pump station by using a movable sewage pump, pumping and discharging the underground water to a three-level sedimentation tank outside the tunnel in a grading and discharge manner, and discharging the underground water to a specified place after sedimentation. The following chart flow shows:
the tunnel face is provided with a temporary water accumulation pit → a mobile water pump → a mobile pump station (9m3 mobile water tank (1.5m multiplied by 3m multiplied by 2m) → No. 1 sump sedimentation tank pump station (30m3) → No. 2 sump sedimentation tank pump station (30m3) → extra-tunnel sedimentation tank,
1. no. 2 sump pit plans to adopt many low-lift large-traffic sewage pumps to pump drainage to the outer sedimentation tank of hole step by step, and equipment model design is: 100WQ87-28-15 flow 87-100m3/h lift 25-28m power 15kw (the model is universal, and later-stage spare and accessory part replacement is facilitated) is adjusted according to the size of water during construction.
When the face excavation is at (500m) from the wellhead,
in order to prevent the large water inflow of the inclined shaft, a hole is dug on the side wall of the right side of the shaft body, a No. 1 temporary fixed pump station is arranged, and 3 large-flow water pumps are adopted to directly pump and drain water to a sedimentation tank outside the hole. (explanation: if the water inflow of the section exceeds the design value, a position for installing a spare pump is additionally arranged at the position)
The water pump of the No. 1 temporary pump station needs the lift that (the gap between the opening and the No. 1 temporary pump station is 500m, the gradient is 8.92 percent), and the net height difference is 44.6m
HB=HSY/ηg=(45+3)÷0.8=60m
In the formula
HB-water pump required head, m;
HSY-lateral height, i.e. the height difference between the lowest water level of the suction well and the outlet of the drainage pipe, which is generally +3 difference between the bottom of the well and the ground level height;
η g, pipeline efficiency, when the pipeline is laid in a vertical shaft, η g is 0.9-0.89, when the pipeline is laid in an inclined shaft, and the inclination angle α is more than 30 degrees, η g is 0.83-0.8, when α is 30-20 degrees, η g is 0.8-0.77, and when α is less than 20 degrees, η g is 0.77-0.74.
(3) When inclined shaft well body construction middle period, consider to set up the drainage pumping station progression and increase, the probability of breaking down can corresponding increase, consequently 500m and 1000m position from the well head respectively, excavate a cavern or welded plate water tank temporarily at well body right side boundary, set up No. 1, No. 2 temporary pumping station. Meanwhile, the tunnel face moving water tank and the sump pump are moved forwards according to the construction progress; and (4) performing subsequent drainage of the inclined shaft to a sedimentation tank outside the tunnel through a No. 2 temporary pump station → a No. 1 temporary pump station in a relay manner.
When the face excavation is within the interval of 500m to 1000m from the well head, the drainage flow chart is as follows: a tunnel face 1# mobile pump station → a sump pump station is pumped and discharged to a No. 1 temporary pump station at a position of 500m → is directly pumped and discharged outside a tunnel;
the mobile pump station moves forwards along with the progress of the tunnel face along with the forward tunneling of the tunnel face excavation face;
when the inclined shaft construction is from the well mouth to 800m, a cavern is excavated on the side wall on the right side of the well body, the position of a subsequent No. 2 fixed pump station is reserved, the pumping and drainage amount is designed to be equal to that of a pump station on the well bottom, when the inclined shaft construction is from the well mouth to 1000m, the cavern is excavated on the side wall on the right side of the well body, a No. 2 temporary pump station is arranged, and more than 3 high-lift high-flow water pumps are adopted to directly pump and drain water to a sedimentation tank outside the cavern. (explaining that if the water inflow of the section exceeds the design value, a position for installing a spare pump is additionally arranged at the position)
① calculating the required lift of No. 2 temporary pump station water pump as (500m interval between No. 1 and No. 2 temporary pump stations, 8.92% gradient) net height difference of 44.6m
HB=HSY/ηg=(45+3)÷0.8=60m
In the formula
HB-water pump required head, m;
HSY-lateral height, i.e. the height difference between the lowest water level of the suction well and the outlet of the drainage pipe, which is generally +3 difference between the bottom of the well and the ground level height;
η g, pipeline efficiency, when the pipeline is laid in a vertical shaft, η g is 0.9-0.89, when the pipeline is laid in an inclined shaft, and the inclination angle α is more than 30 degrees, η g is 0.83-0.8, when α is 30-20 degrees, η g is 0.8-0.77, and when α is less than 20 degrees, η g is 0.77-0.74.
② calculating the required lift of No. 2 fixed pump station water pump as (the gap between the hole and No. 2 pump station is 800m, the gradient is 8.92%) net height difference is 71.4m
HB=HSY/ηg=(71+3)÷0.8=92.5m
In the formula
HB-water pump required head, m;
HSY-lateral height, i.e. the height difference between the lowest water level of the suction well and the outlet of the drainage pipe, which is generally +3 difference between the bottom of the well and the ground level height;
η g, pipeline efficiency, when the pipeline is laid in a vertical shaft, η g is 0.9-0.89, when the pipeline is laid in an inclined shaft, and the inclination angle α is more than 30 degrees, η g is 0.83-0.8, when α is 30-20 degrees, η g is 0.8-0.77, and when α is less than 20 degrees, η g is 0.77-0.74.
(4) When the tunnel face is excavated within the range of 1000m to 1570m away from the well head.
The tunnel face moves the sewage pump to pump and drain water to a nearby No. 2 temporary pump station.
A drainage flow chart: a palm face moving pump station → a No. 2 temporary pump station at 1000m → a No. 1 temporary pump station at 500m is directly pumped out of the tunnel; the water quantity at this stage can be increased at any time, and the spare water pump is stored nearby.
(5) When the tunnel face is excavated from a well mouth 1570m to the bottom of the well and is constructed towards the direction of the small mileage of the main tunnel, the fixed pump station mainly undertakes the drainage tasks of the inclined shaft and the tunnel inlet section after the inclined shaft is arranged to the bottom of the well according to the construction progress. Considering the possibility of sudden water burst at any time of the tunnel, two-stage pump station pumping drainage is designed from the safety perspective, a large water sump at the bottom of the well is arranged at the bottom of the well or at the position which is close to 1494m of the small mileage, a No. 1 fixed pump station is arranged, a No. 2 fixed pump station is arranged at the position which is 800m away from the hole in the shaft of the inclined shaft in the early stage, water is drained out of the hole in a relay pumping drainage mode, and at the moment, the original No. 1 temporary pump station equipment and the original No. 2 temporary pump.
A drainage flow chart: namely, the tunnel face moving pump station → the water collecting pit → No. 1 fixed pump station sedimentation tank → No. 1 fixed pump station → No. 2 fixed pump station sedimentation tank → No. 2 fixed pump station → the out-of-tunnel sedimentation tank.
And (3) calculating: the water pump of the No. 1 fixed pump station needs the lift (the distance between the bottom of the well and the No. 2 fixed pump station is 800m, the gradient is 8.92 percent), and the net height difference is 71.4m
HB=HSY/ηg=(71+3)÷0.8=92.5m
During the drainage of the inclined shaft, the pump stations are fixed No. 1 and No. 2, and the lift of each stage is at least about 92 meters.
Main tunnel drainage
According to the design drawing guiding construction organization design arrangement, the full length 10491m of the tung catalpa tunnel is subjected to construction tasks of 4494m of the tunnel (single hole) in 8 marks; after the inclined shaft enters the main tunnel, the reverse slope construction is carried out when the distance from the right tunnel to the small mileage direction is 1479m, and the reverse slope construction is carried out when the distance from the left tunnel to the small mileage direction is 1400 m. Relative height difference is 26 meters, and the slope is-1.75%, and every interval 500m distance directly sets up No. 1, 2, 3 sump pit pump stations through the cross passage, and equipment model design is: 100WQ87-28-15 flow 87-100m3/h lift 25-28m power 15kw (each pump station is 3, two-purpose and one spare) (the model is universal, and is convenient for later-stage spare part replacement), and the pump stations are pumped to a large water sump pump station entering the bottom of the well step by step and pumped to a fixed pump station water sump at the bottom of the well 1 by a sewage pump step by step. And (3) constructing the inverted arch of the main tunnel, arranging a movable water tank pump station in front of the working face of the inverted arch, cutting off the flowing water in front, installing 2 small sewage pumps, pumping and discharging the sewage pumps into a water collecting pool of a fixed pump station step by step through DN100 pipelines, and finally pumping and discharging the sewage pumps out of the well by using 1# and 2# fixed pump stations in a relay manner.
The tunnel exit section is 3015m reverse slope single construction toward the right hole in the tunnel entrance section direction, relative difference in height is 53m, and the left hole is 3094m reverse breaking construction. 54 meters.
The basic principles and the main features of the invention and the advantages of the invention have been shown and described above, it will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, but that the invention may be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims (9)

1. The utility model provides a reverse slope tunnel construction drainage system, its characterized in that, deposits drainage device (4) and drain pipe (5) outside portable immersible pump (1), moving water tank pump station (2), sump pit device (3), the hole, portable immersible pump (1) is connected with moving water tank pump station (2) through drain pipe (5), moving water tank pump station (2) are connected with sump pit device (3) through drain pipe (5), sump pit device (3) are connected with sump pit device (4) through drain pipe (5) and the hole is deposited outward, the water inlet setting of portable immersible pump (1) is in the face bottom of reverse slope tunnel construction, portable immersible pump (1), moving water tank pump station (2) and sump pit device (3) all set up in the hole in reverse slope tunnel.
2. The reverse slope tunnel construction drainage system according to claim 1, characterized in that: remove water tank pump station (2) including storage water tank (2.1), water inlet valve (2.2), storage water tank fixed block (2.3) and storage water tank suction pump (2.4), storage water tank fixed block (2.3) set up in storage water tank (2.1) bottom both sides, water inlet valve (2.2) set up the water inlet department at storage water tank (2.1), storage water tank (2.1) are through storage water tank suction pump (2.4) and sump pit device (3) intercommunication.
3. The reverse slope tunnel construction drainage system according to claim 2, characterized in that: the quantity of the water inlet of storage water tank (2.1) sets up threely, all is provided with water inlet valve (2.2) on the three water inlet, be provided with the fixed orifices on storage water tank fixed block (2.3), use the reinforcing bar to pass the fixed orifices and squeeze into underground fixed storage water tank (2.1).
4. The reverse slope tunnel construction drainage system according to claim 1, characterized in that: the number of the water collecting pit devices (3) is set to be 2-3, the interval between every two water collecting pit devices (3) is 300-400 meters, and the first water collecting pit device (3) is arranged 500 meters away from the tunnel entrance of the reverse slope.
5. The reverse slope tunnel construction drainage system according to claim 1, characterized in that: the water collecting pit device (3) comprises a water collecting pit water inlet pipe (3.1), a water collecting pool (3.2), a partition plate (3.3), a water collecting sedimentation pool (3.4), a top grid plate (3.5), a rod type liquid level sensor (3.6), a control box (3.7), a first water suction pump (3.8), a second water suction pump (3.9), a third water suction pump (3.10), a water suction pump valve (3.11), an outlet header pipe (3.12) and a water suction pump fixed bottom (3.13), one end of the water collecting pit water inlet pipe (3.1) is arranged above the water collecting pool (3.2), the other end of the water collecting pit water inlet pipe is connected with the mobile pump station (2), the partition plate (3.3) is arranged between the water collecting pool (3.2) and the water collecting sedimentation pool (3.4), a water through hole is arranged on the partition plate (3.3), the water collecting pit (3.2) and the underground sedimentation pool (3.4) is formed above the underground sedimentation pool (3.5) by digging a reverse tunnel, the rod type liquid level sensor (3.6) is arranged in the water collecting sedimentation tank (3.4) and is connected with the control box (3.7), the first water pump (3.8) of the water collecting tank, the second water pump (3.9) of the water collecting tank and the third water pump (3.10) of the water collecting tank are respectively connected with a control box (3.7), and the water inlets of the first water pump (3.8) and the second water pump (3.9) of the water collecting tank and the third water pump (3.10) of the water collecting tank are all arranged in the water collecting sedimentation tank (3.4), the water outlets of the first water pump (3.8) of the water collecting tank, the second water pump (3.9) of the water collecting tank and the third water pump (3.10) of the water collecting tank are all communicated with a water outlet collecting pipe (3.12), and all be provided with suction pump valve (3.11), the bottom of the first suction pump of catch basin (3.8), catch basin second suction pump (3.9) and catch basin third suction pump (3.10) all is provided with suction pump unable adjustment base (3.13).
6. The reverse slope tunnel construction drainage system according to claim 5, characterized in that: a water pump controller is arranged in the control box (3.7), the water pump controller is of the type SM5-A1-2200, the water pump controller receives a liquid level signal received according to the rod type liquid level sensor (3.6) to control the water pump to be started, and the rod type liquid level sensor (3.6) uses a Wolk LHS connecting rod floating ball sensor.
7. The reverse slope tunnel construction drainage system according to claim 1, characterized in that: the hole outside precipitation drainage device (4) comprises a first sedimentation tank (4.1), a first partition plate (4.2), a second sedimentation tank (4.3), a second partition plate (4.4) and a third sedimentation tank (4.5), wherein the first sedimentation tank (4.1), the second sedimentation tank (4.3) and the third sedimentation tank (4.5) are formed by digging a ground surface downwards, the first partition plate (4.2) is arranged between the first sedimentation tank (4.1) and the second sedimentation tank (4.3), the second partition plate (4.4) is arranged between the second sedimentation tank (4.3) and the third sedimentation tank (4.5), the first partition plate (4.2) and the second partition plate (4.4) are both provided with a filtration water through hole, and the position of the filtration water through hole on the second partition plate (4.4) is higher than that of the first partition plate (4.2).
8. The reverse slope tunnel construction drainage system according to claim 1, characterized in that: a temporary water collecting well is arranged at the bottom of the face of the reverse slope tunnel construction, and underground water and construction water are collected by the temporary water collecting well and are pumped to a mobile water tank pump station (2) by a mobile submersible pump (1).
9. The reverse slope tunnel construction drainage system according to claim 1, characterized in that: the side of the sump device (3) is provided with a plurality of water collecting channels, and the water collecting channels collect the underground water of the reverse slope tunnel to flow into the sump device (3).
CN201921095524.8U 2019-07-12 2019-07-12 Reverse slope tunnel construction drainage system Expired - Fee Related CN210509282U (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110410143A (en) * 2019-07-12 2019-11-05 中交一公局第四工程有限公司 A kind of reverse-slope tunnel construction drainage system
CN111677551A (en) * 2020-05-16 2020-09-18 王洪恩 Drainage device for coal mine excavation roadway

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110410143A (en) * 2019-07-12 2019-11-05 中交一公局第四工程有限公司 A kind of reverse-slope tunnel construction drainage system
CN111677551A (en) * 2020-05-16 2020-09-18 王洪恩 Drainage device for coal mine excavation roadway
CN111677551B (en) * 2020-05-16 2022-01-25 焦作煤业(集团)有限责任公司 Drainage device for coal mine excavation roadway

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