CN215858009U

CN215858009U - Water supply system using underground water of super-long tunnel as water source of fire pool in tunnel

Info

Publication number: CN215858009U
Application number: CN202121654553.0U
Authority: CN
Inventors: 刘远明; 彭琛; 蒋亮; 袁侨蔚; 许崇帮; 熊成宇; 喻兴旺; 田娇; 黄城
Original assignee: Guizhou University
Current assignee: Guizhou University
Priority date: 2021-07-20
Filing date: 2021-07-20
Publication date: 2022-02-18
Anticipated expiration: 2031-07-20

Abstract

The utility model discloses a water supply system using underground water of an ultra-long tunnel as a water source of a fire pool in a tunnel. The water supply system using underground water of the ultra-long tunnel as a water source of a fire pool in a tunnel comprises: the device comprises a deep well pump, a first water supply pipe, a first reservoir, a water delivery pump, a second water supply pipe, a high-level fire pool (6), a third water supply pipe, a solenoid valve, a fire hydrant system, a central drainage ditch, a connecting piece, a valve, an in-hole fire pool and the like. Has the advantages that: the fire-fighting water pool is arranged in the ultra-long tunnel, the gate is arranged in the sand trap at the drainage ditch in the center of the tunnel to store water to form the underground water taking pool, and the height difference between the underground water taking pool and the in-hole fire-fighting water pool is utilized to automatically flow water to the fire-fighting water pool in the tunnel. The problem that the water pressure of a fire-fighting water supply system pipe network is too large when a high-level water pool is arranged outside the hole is solved, and the problem of water source elimination inside the hole is also solved. The underground water in the tunnel is used for self-flowing water supply, so that the underground water is reasonably utilized, and the engineering investment is saved.

Description

Water supply system using underground water of super-long tunnel as water source of fire pool in tunnel

Technical Field

The utility model relates to the technical field of transportation and equipment, in particular to a water supply system using underground water of an ultra-long tunnel as a water source of a fire pool in a tunnel.

Background

At present, a super-long mountain-crossing highway tunnel in China generally adopts a normal-high pressure fire-fighting water supply system, namely a high-level fire-fighting water pool and a water collecting well are arranged outside the tunnel, a fire-fighting water source mainly pumps underground water for a deep well pump, and then the underground water is pumped to the high-level fire-fighting water pool to supply water to a tunnel fire hydrant system by means of gravity.

However, the above water intake method and fire-fighting water supply system have the following limitations for an ultra-long tunnel with a distance exceeding 10 km:

(1) the deep well pumping the underground water may have certain influence on the local underground water environment, has certain requirements on the effluent flow, and has higher cost for drilling and taking the underground water.

(2) For an ultra-long tunnel, the water pressure of a fire-fighting pipe network can be increased only by means of water supply of a high-level fire-fighting water pool outside the tunnel, a plurality of pressure reducing valves are required to be arranged along the way, and once a certain link goes wrong, the safety and the fire rescue capacity of the whole fire-fighting water supply system are affected.

(3) The contradiction between the search of the tunnel fire-fighting water source and the discharge of the tunnel surrounding rock leakage underground water is realized, and for the tunnel in the mountainous rich water, the underground water resource discharged in the tunnel operation period for a long time is not utilized, so that the water resource waste is caused.

Therefore, the research on the water supply system which utilizes the underground water of the ultra-long tunnel as the water source of the fire pool in the tunnel has important significance for utilizing the underground water source and optimizing the fire-fighting water supply mode.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a water supply system which utilizes underground water of an ultra-long tunnel as a water source of a fire pool in a tunnel, and can solve the problems.

In order to achieve the purpose, the utility model provides the following technical scheme:

a water supply system using underground water of an ultra-long tunnel as a water source of a fire pool in the tunnel comprises the ultra-long tunnel and a first reservoir positioned outside a tunnel portal, wherein a water inlet of the first reservoir is connected with a deep well pump through a first water supply pipe, the deep well pump is positioned in an external water source, the fire pool is arranged at a high position outside the tunnel portal, the first reservoir and the fire pool are communicated through a second water supply pipe, a water delivery pump is arranged on the second water supply pipe, the fire pool is communicated with a fire hydrant system in the ultra-long tunnel through a third water supply pipe, and a first electromagnetic valve is arranged on the third water supply pipe; a plurality of sand sediment wells are arranged in the center drainage ditch in the super-long tunnel at intervals, sliding grooves are formed in two sides of one side of each sand sediment well, a gate is arranged between the two sliding grooves, the gate is fixed in the sliding grooves in the two sides of each sand sediment well, and the height of the gate is controlled through a threaded bolt arranged on the gate; the gate is provided with a first connecting piece, a hose is connected to the first connecting piece, the tail end of the hose is connected with a water inlet pipe through a second connecting piece, and the water inlet pipe is fixed on one side of the central drainage ditch through a fastener; the tail end of the water inlet pipe is provided with a sedimentation tank, a filter tank is arranged at a water inlet of the sedimentation tank and is connected with a water outlet end of the water inlet pipe, a sewage pump is arranged at the bottom end of the sedimentation tank so as to clean the sedimentation tank, a first reservoir and a second reservoir are sequentially arranged on one side of the sedimentation tank, the sedimentation tank and the first reservoir are communicated with each other through a first overflow pipe, and the first reservoir and the second reservoir are communicated through a second overflow pipe.

As a further scheme of the utility model: a first liquid level meter and a first water quality monitor are arranged in the first reservoir, and a second liquid level meter and a second water quality monitor are arranged in the second reservoir.

As a further scheme of the utility model: the second reservoir is connected with the fire hydrant system in the tunnel through a fourth water supply pipe, a check valve 34 is arranged on the fourth water supply pipe, and a third overflow pipe is arranged on the second reservoir; the first reservoir is connected with other water-requiring systems through a fifth water supply pipe, and a second electromagnetic valve is arranged on the fifth water supply pipe.

The working principle of the utility model is as follows: the high-position fire pool and the water taking system outside the tunnel are composed of a deep well pump, a first water supply pipe, a first reservoir, a high-position fire pool, a second water supply pipe and a first electromagnetic valve; the underground water collecting system comprises a central drainage ditch, a sand sediment well, a gate, a hose, a water inlet pipe, a connecting piece and a fixing piece, wherein the underground water collecting system consists of the central drainage ditch, the sand sediment well, the gate, the hose, the water inlet pipe, the connecting piece and the fixing piece; the in-hole fire-fighting water supply system comprises a control platform, a water pump room, a sedimentation tank, a second reservoir, a third reservoir, a first overflow pipe, a second overflow pipe, a first liquid level meter, a second liquid level meter, a first water quality monitor, a second water quality monitor, a water outlet pipe, a sewage pump, a check valve and an electromagnetic valve; wherein the deep well pump is used for collecting underground water and supplying water to a high-level fire pool outside the tunnel through a water supply pipe and a water delivery pump; the high-level fire-fighting water pool outside the tunnel is connected with the fire-fighting hydrant system inside the tunnel, and water is supplied to the area from the tunnel opening end to the fire-fighting water pool inside the tunnel through the control of an electromagnetic valve; the sand sediment wells are arranged in the central drainage ditch of the tunnel at intervals of 50 meters, and one sides of the sand sediment wells are provided with water gates; the sluice can control and intercept the drained underground water through a threaded bolt, and the sluice is connected with a hose through a first connecting piece; the hose can lift together with the gate, and the other end of the hose is connected with a water inlet pipe of the in-hole elimination water pool through a second connecting piece; the water inlet pipe of the in-hole elimination water tank is fixed on one side of the central drainage ditch; underground water firstly passes through a filter tank through the water inlet pipe and then enters a sedimentation tank, and then enters two water storage tanks from the sedimentation tank in an overflow mode, wherein the two water storage tanks are both provided with a water quality detector and a liquid level meter; the water quality detector and the liquid level meter transmit data to the control platform; judging whether the underground water meets the utilization requirement or not according to the control platform data; under normal conditions, after the water stored in the reservoir meets the requirement, the water is drained to a central drainage ditch through a drainage pipe in an overflow mode, and a check valve is arranged on the drainage pipe; when a fire disaster occurs, the water pump room sends water to the tunnel fire hydrant system; and a sewage discharge pump is arranged in the sedimentation tank, and the sedimentation tank is cleaned regularly to discharge sewage.

Compared with the prior art, the utility model has the beneficial effects that: the utility model utilizes the arrangement of the gate in the tunnel sand-settling well, can flexibly adjust the height of the water inlet pipe mouth by combining the hose and the hard pipe, collects the underground water to the reservoir in the tunnel for the tunnel fire-fighting water source, and can realize the purpose of 'regional pressure reduction' by the regional water supply system consisting of the fire-fighting reservoir in the tunnel and the high-level fire-fighting reservoir outside the tunnel, and also can utilize the underground water resource.

Drawings

FIG. 1 is a schematic view of a water supply system using underground water of an ultra-long tunnel as a water source of a fire pool in a tunnel according to the present invention.

FIG. 2 is a schematic view of the structure of a sand trap, a gate, a water inlet pipe and the like.

Fig. 3 is a schematic diagram of groundwater entering the impounding reservoir in the tunnel through the intake pipe.

Fig. 4 is a schematic diagram of water supply in two zones in an ultra-long tunnel.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-4, the present invention provides a technical solution: the utility model provides an utilize water supply system of overlength tunnel groundwater as fire pond water source in hole, as shown in fig. 1, set up a high-order fire pond 6 outside the tunnel hole, the water source of high-order fire pond 6 comes from deep well exploitation groundwater, pump water to first cistern 3 through deep well pump 1, be equipped with delivery pump 4 in the first cistern 3, first cistern 3 links to each other through first delivery pipe 5 with high-order fire pond 6, high-order fire pond 6 links to each other through second delivery pipe 7 with tunnel fire hydrant system 9, the centre is controlled by first solenoid valve 8, the delivery port of second delivery pipe 5 is in the bottom of high-order fire pond, delivery port of second delivery pipe 5 has certain perpendicular difference of height with tunnel fire hydrant system 9, in order to guarantee gravity water supply pressure.

A central drainage ditch 10 is arranged in the tunnel, sand sediment wells 11 are arranged in the central drainage ditch 10 at intervals of 50 meters, as shown in fig. 2, sliding chutes 12 are formed in the sand sediment wells 11, gates 13 are arranged in the sliding chutes 12, threaded bolts 15 are welded at the tops of the gates 13, and the threaded bolts 15 mainly control the positions of the gates 13 and intercept underground water. The flexible pipe 16 is fixed on the gate through a first connecting piece 14 at the opening of the gate 13, and the flexible pipe 16 is used as a water inlet and can move along with the gate 13. The hose 16 is connected with a water inlet steel pipe 18 through a second connecting piece 17, and the water inlet steel pipe 18 is fixed on one side ditch wall of the central ditch 10 through a fastener 19.

Groundwater flows through filter tank 23 through intake steel pipe 18, and water through preliminary filtration gets into sedimentation tank 22, and filter tank 23 mainly used filters debris, and sedimentation tank 22 mainly is used for deposiing silt, and through deposiing the back, the water in sedimentation tank 22 flows into second cistern 26 in the hole through first overflow pipe 25, and the water in second cistern 26 in the hole flows into third cistern 28 in the hole through second overflow pipe 27, through tertiary sediment, collects groundwater.

The first reservoir 26 in the hole and the second reservoir 28 in the hole are both provided with a first liquid level meter 29, a first water quality monitor 30, a second liquid level meter 31 and a second water quality monitor 32, the water levels of the reservoirs in the two holes are monitored through the liquid level meters, and data are transmitted to the control platform 21.

The key point of the utility model is to collect and utilize the underground water.

As shown in figure 3, the main principle of groundwater entering the reservoir in the tunnel is hydraulic pressure generated by the difference between the height of the sand-settling well and the height of the reservoir in the tunnel

h, taking a vertical height difference (m) from the sand trap to a reservoir in the hole;

l, taking water from the sand trap to a reservoir in the hole along the actual length (m);

when the underground water of the central drainage ditch can be fully stored in the reservoir in the hole by means of gravity, the requirement for tunnel fire-fighting water consumption and water supplement amount is met, and therefore the flow is measured on site when the water storage position of the sand sediment well is selected.

The water level scope of level gauge monitoring should satisfy between the service function water level at overflow and cistern, and when the water level was less than normal use function water level, down-regulation gate 13 guaranteed the biggest inflow, after the water level satisfied normal use function water level, according to the water yield regulation gate 13 in dry season, rich water season tunnel center escape canal.

The water use type is judged according to the monitoring results of the first water quality detector 30 and the second water quality monitor 32, the tunnel underground water quality is generally better, the water quality requirements of fire-fighting water and tunnel road water are lower, and the pipeline is generally not blocked.

When a fire breaks out, the water pump in the water pump room 20 is started, water is conveyed to the fire hydrant system through the fourth water supply pipe 33, and if an emergency situation occurs and the high-level fire water pool 6 outside the hole needs to supply water to the fire hydrant system, the check valve 34 can prevent the water from entering the reservoir in the hole. In the absence of a fire, water in the second reservoir 28 drains through the third overflow pipe 37 to the central drain 10, ensuring proper operation of the tunnel drainage system. A fifth water supply line 35 is connected to other water usage ports, such as tunnel roadway wash water, and is controlled by a second solenoid valve 36.

It can be seen that, as shown in fig. 4, the water supply system using the underground water of the ultra-long tunnel as the water source of the fire-fighting water pool in the hole divides the fire-fighting water supply network into two water supply areas, namely, a high-level fire-fighting water pool outside the hole and a fire-fighting water pool inside the hole, so as to reduce the water pressure.

In conclusion, the utility model provides a new design idea for underground water utilization and fire-fighting water supply modes of the ultra-long highway tunnel, and has the advantages of saving water resources, reducing water pressure of a fire-fighting water supply pipe network system and the like.

Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that various changes in the embodiments and/or modifications of the utility model can be made, and equivalents and modifications of some features of the utility model can be made without departing from the spirit and scope of the utility model.

Claims

1. The utility model provides an utilize water supply system at overlength tunnel groundwater as fire pond water source in hole, include overlength tunnel and be located first cistern (3) outside the tunnel entrance to a cave, the water inlet of this first cistern (3) is connected with deep-well pump (1) through first delivery pipe (2), this deep-well pump (1) is located outside water source, high-order fire pond (6) of being provided with outside the tunnel entrance to a cave, wherein through second delivery pipe (5) intercommunication between first cistern (3) and fire pond (6), be provided with delivery pump (4) on second delivery pipe (5), its characterized in that: the fire-fighting water pool (6) is communicated with a fire hydrant system (9) in the ultra-long tunnel through a third water supply pipe (7), and a first electromagnetic valve (8) is arranged on the third water supply pipe (7); a plurality of sand sediment wells (11) are arranged in a central drainage ditch (10) in the ultra-long tunnel at intervals, sliding chutes (12) are arranged on two sides of one side of each sand sediment well (11), a gate (13) is arranged between the two sliding chutes (12), the gates (13) are fixed in the sliding chutes (12) on two sides of each sand sediment well, and the height of the gates (13) is controlled through threaded bolts (15) arranged on the gates (13); a first connecting piece (14) is arranged on the gate (13), a hose (16) is connected to the first connecting piece (14), the tail end of the hose (16) is connected with a water inlet pipe (18) through a second connecting piece (17), and the water inlet pipe (18) is fixed on one side of the central drainage ditch (10) through a fastener (19); the water inlet pipe is characterized in that a sedimentation tank (22) is arranged at the tail end of the water inlet pipe (18), a filter tank (23) is arranged at a water inlet of the sedimentation tank (22), the filter tank (23) is connected with a water outlet end of the water inlet pipe (18), a sewage pump (24) is arranged at the bottom end of the sedimentation tank (22) to clean the sedimentation tank (22), a first water storage tank (26) and a second water storage tank (28) are sequentially arranged on one side of the sedimentation tank (22), the sedimentation tank (22) and the first water storage tank (26) are communicated with each other through a first overflow pipe (25), and the first water storage tank (26) and the second water storage tank (28) are communicated through a second overflow pipe (27).

2. The water supply system using underground water of the ultra-long tunnel as a water source of the fire pool in the tunnel according to claim 1, wherein: a first liquid level meter (29) and a first water quality monitor (30) are arranged in the first reservoir (26), and a second liquid level meter (31) and a second water quality monitor (32) are arranged in the second reservoir (28).

3. The water supply system using underground water of the ultra-long tunnel as a water source of the fire pool in the tunnel according to claim 1, wherein: the second water reservoir (28) is connected with the fire hydrant system (9) in the tunnel through a fourth water supply pipe (33), a check valve (34) is arranged on the fourth water supply pipe (33), and a third overflow pipe (37) is arranged on the second water reservoir (28); the first reservoir (26) is connected with the tunnel pavement flushing water system through a fifth water supply pipe (35), and a second electromagnetic valve (36) is arranged on the fifth water supply pipe.