CN109381830B - Ultra-long highway tunnel partition water supply fire-fighting system and water supply fire-fighting method - Google Patents
Ultra-long highway tunnel partition water supply fire-fighting system and water supply fire-fighting method Download PDFInfo
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- CN109381830B CN109381830B CN201811541776.9A CN201811541776A CN109381830B CN 109381830 B CN109381830 B CN 109381830B CN 201811541776 A CN201811541776 A CN 201811541776A CN 109381830 B CN109381830 B CN 109381830B
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C31/00—Delivery of fire-extinguishing material
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C35/00—Permanently-installed equipment
- A62C35/58—Pipe-line systems
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C37/00—Control of fire-fighting equipment
- A62C37/36—Control of fire-fighting equipment an actuating signal being generated by a sensor separate from an outlet device
- A62C37/38—Control of fire-fighting equipment an actuating signal being generated by a sensor separate from an outlet device by both sensor and actuator, e.g. valve, being in the danger zone
- A62C37/40—Control of fire-fighting equipment an actuating signal being generated by a sensor separate from an outlet device by both sensor and actuator, e.g. valve, being in the danger zone with electric connection between sensor and actuator
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Abstract
The invention provides a regional water supply fire-fighting system and a regional water supply fire-fighting method for an ultralong highway tunnel, wherein the regional water supply fire-fighting system for the ultralong highway tunnel comprises: the fire-fighting pipeline comprises a left-line tunnel fire-fighting pipeline (1), a right-line tunnel fire-fighting pipeline (2), a first transverse connecting pipeline (3), a second transverse connecting pipeline (4), a third transverse connecting pipeline (5), a fourth transverse connecting pipeline (6), an in-hole conversion water tank (7), a high-position fire-fighting water tank (8), a water reservoir (9), a deep well (10), a connecting piece, a valve and the like. The advantages are that: according to the invention, the tunnel water fire-fighting system can be divided into two or more fire-fighting water supply systems which are independent and can be communicated with each other by arranging the in-tunnel conversion water pool in the tunnel, so that the reliability of the tunnel fire-fighting system is improved, and the problems of excessively high overpressure and overlong water supply distance of the system and poor reliability are solved.
Description
Technical Field
The invention belongs to the technical field of transportation and equipment, and particularly relates to an ultra-long highway tunnel zoned water supply fire-fighting system and a water supply fire-fighting method.
Background
For highway tunnel, especially mountain tunnel, generally adopt the gravity normal high pressure water supply scheme that sets up high-order fire-fighting pool, the scheme of specifically adopting is: the inner side wall of the tunnel is provided with fire-fighting pipelines along the length direction of the tunnel, and fire hydrants are arranged on the fire-fighting pipelines at certain intervals; the high-level water tank is arranged outside the tunnel and is communicated with the fire-fighting pipeline, so that the high-level water tank can supply water to the fire hydrant under pressure.
However, the above fire protection system has the following disadvantages in ultra-long tunnels (about 10 km), over-height tunnels (over-height 100 m), or long-distance herringbone tunnels:
(1) For an ultra-long tunnel, because the length of the fire-fighting pipeline to be arranged is longer, the water supply distance is too long, so that the number of valves installed on the fire-fighting pipeline is too large, the water pipe connectors are too large, and for a 10km tunnel as an example, about 800 valves and about 3600 water pipe connectors are usually required to be installed, so that the water supply reliability is poor, and once the fire-fighting pipeline at a certain position is broken or the valves are damaged, the whole fire-fighting system is paralyzed;
(2) For the tunnel with overlarge height difference, a plurality of pressure reducing valves are required to be arranged on the fire-fighting pipeline, and the pressure reducing valves have high requirements on water quality, so that the filter holes are easy to be blocked in the field environment, and the pressure reducing valves are invalid. Once the pressure reducing valve fails, the water pipe bursts, so that the whole fire protection system is paralyzed; therefore, on the one hand, the water supply reliability is poor; on the other hand, the pressure reducing valve needs to be frequently maintained and maintained, so that the cost is high;
(3) For a long-distance herringbone slope tunnel, a high-level water tank is arranged on a single end, and the problem of insufficient pressure or overpressure exists for a fire hydrant far away from the side of the high-level water tank. In order to ensure the fire-fighting water supply requirement, a set of fire-fighting system is required to be arranged at the other end, and a fire-fighting water source, a fire-fighting pump room, a water pool and the like are required. For areas with limited setting conditions such as mountain tunnel water sources and pump rooms, the requirements can be met at great cost, so that the arrangement cost is high.
Therefore, research on a water supply fire-fighting system with high reliability, which can meet the requirements of complex tunnels such as ultra-long tunnels, is an urgent need to be solved at present.
Disclosure of Invention
Aiming at the defects existing in the prior art, the invention provides an ultralong highway tunnel zoned water supply fire-fighting system and a water supply fire-fighting method, which can effectively solve the problems.
The technical scheme adopted by the invention is as follows:
the invention provides a regional water supply fire-fighting system for an ultralong highway tunnel, which comprises: the fire-fighting system comprises a left-line tunnel fire-fighting pipeline (1), a right-line tunnel fire-fighting pipeline (2), a first transverse connecting pipeline (3), a second transverse connecting pipeline (4), a third transverse connecting pipeline (5), a fourth transverse connecting pipeline (6), an in-hole conversion water tank (7), a high-level fire-fighting water tank (8), a water reservoir (9) and a deep well (10);
the left-line tunnel fire-fighting pipeline (1) is fixedly installed in the pipe ditch of the left-line tunnel along the driving direction of the tunnel; the right tunnel fire-fighting pipeline (2) is fixedly installed in the tunnel trench of the right tunnel along the driving direction of the tunnel; the front end of the left tunnel fire-fighting pipeline (1) is communicated with the front end of the right tunnel fire-fighting pipeline (2) through the first transverse communication pipeline (3); the rear end of the left tunnel fire-fighting pipeline (1) is communicated with the rear end of the right tunnel fire-fighting pipeline (2) through the second transverse communication pipeline (4); the left-line tunnel fire-fighting pipeline (1), the first transverse connecting pipeline (3), the right-line tunnel fire-fighting pipeline (2) and the second transverse connecting pipeline (4) are connected end to form a fire-fighting water supply loop; wherein the first lateral communication pipe (3), the second lateral communication pipe (4), the third lateral communication pipe (5) and the fourth lateral communication pipe (6) are all installed under a road surface;
the third transverse connecting pipeline (5) and the fourth transverse connecting pipeline (6) are sequentially and transversely arranged between the left-line tunnel fire-fighting pipeline (1) and the right-line tunnel fire-fighting pipeline (2) at intervals from the front end to the rear end; two ends of the third transverse connecting pipeline (5) are respectively communicated with the left-line tunnel fire-fighting pipeline (1) and the right-line tunnel fire-fighting pipeline (2); two ends of the fourth transverse connecting pipeline (6) are respectively communicated with the left-line tunnel fire-fighting pipeline (1) and the right-line tunnel fire-fighting pipeline (2); the fire-fighting water supply main ring is divided into a rear-end water supply sub-ring (B1), a middle communicating sub-ring (B2) and a front-end water supply sub-ring (B3) through the arrangement of the third transverse connecting pipeline (5) and the fourth transverse connecting pipeline (6);
wherein, a 1 st electromagnetic valve (11) is arranged on the left tunnel fire-fighting pipeline (1) and belongs to the area of the middle communicating sub-ring (B2); a 2 nd electromagnetic valve (12) is arranged on the right tunnel fire-fighting pipeline (2) and belongs to the area of the middle communicating sub-ring (B2);
the water supplementing end of the in-tunnel conversion water tank (7) is communicated with the water supplementing point of the left-line tunnel fire-fighting pipeline (1) through a water supplementing pipe (13), wherein the water supplementing point is positioned on the middle communicating sub-ring (B2) and is positioned at the front end of the 1 st electromagnetic valve (11); a 3 rd electromagnetic valve (14) is arranged on the water supplementing pipe (13); the water supply end of the in-tunnel conversion water tank (7) is communicated with the water supply point of the left-line tunnel fire-fighting pipeline (1) through a 1 st water supply pipe (15); wherein the water supply point is located above the rear water supply sub-ring (B1); a5 th electromagnetic valve (32) is mounted on the 1 st water supply pipe (15).
The high-level fire-fighting water tank (8), the water reservoir (9) and the deep well (10) are all arranged outside the tunnel; a 2 nd water supply pipe (16) is arranged between the deep well (10) and the water reservoir (9), a deep well pump (17) is arranged in the deep well (10), and the deep well pump (17) supplies water to the water reservoir (9) through the 2 nd water supply pipe (16); a 3 rd water supply pipe (18) is arranged between the high-level fire water tank (8) and the water storage tank (9), a water delivery pump (19) is arranged in the water storage tank (9), and the water delivery pump (19) supplies water to the high-level fire water tank (8) through the 3 rd water supply pipe (18); the water delivery end of the high-level fire water tank (8) is communicated with the front-end water supply sub-ring (B3) through a 4 th water supply pipe (30); the output end of the 4 th water supply pipe (30) is provided with a 4 th electromagnetic valve (31).
Preferably, a 1 st liquid level meter (20) is arranged in the in-hole conversion water tank (7); a 2 nd liquid level meter (21) is arranged in the high-level fire-fighting pool (8); a 3 rd liquid level meter (22) is arranged in the reservoir (9);
the output ends of the 1 st liquid level meter (20), the 2 nd liquid level meter (21) and the 3 rd liquid level meter (22) are connected with a system control platform; the output end of the system control platform is respectively connected with the 1 st electromagnetic valve (11), the 2 nd electromagnetic valve (12), the 3 rd electromagnetic valve (14), the 4 th electromagnetic valve (31) and the 5 th electromagnetic valve (32).
Preferably, a plurality of fire detectors are arranged at different positions of the left tunnel and the right tunnel; the output end of the fire detector is connected to the system control platform.
Preferably, a filter (23) is mounted on the 4 th water supply pipe (30).
Preferably, a slow-closing check valve (24) is installed on the 4 th water supply pipe (30).
Preferably, a plurality of in-hole fire hydrants (25) are arranged on the left-line tunnel fire-fighting pipeline (1) and the right-line tunnel fire-fighting pipeline (2) along the length direction of the tunnel;
a pressurizing pump (29) communicated with the 1 st water supply pipe (15) is arranged in the in-hole conversion water tank (7).
Preferably, an out-of-hole hydrant (26) and a water pump adaptor (27) are arranged on the first transverse communication pipeline (3) and the second transverse communication pipeline (4).
Preferably, the ends of the first transversal communication duct (3) and the second transversal communication duct (4) are fitted with a blow-off valve/exhaust valve (28).
The invention also provides a fire-fighting water supply method based on the ultra-long highway tunnel zoned water supply fire-fighting system, which comprises the following steps:
step 1, under the condition that no fire disaster occurs at ordinary times, the system control platform controls the 1 st electromagnetic valve (11) and the 2 nd electromagnetic valve (12) to be in a closed state, and the 4 th electromagnetic valve (31) to be in an open state; the 5 th electromagnetic valve (32) is in an open state;
at the moment, a 2 nd liquid level meter (21) arranged in the high-level fire-fighting water tank (8) detects a 1 st water level value in the high-level fire-fighting water tank (8) in real time and sends the 1 st water level value to a system control platform; a 3 rd liquid level meter (22) arranged in the reservoir (9) detects a 2 nd water level value in the reservoir in real time and sends the 2 nd water level value to a system control platform; a 1 st liquid level meter (20) arranged in the in-hole conversion water tank (7) detects a 3 rd water level value in the in-hole conversion water tank (7) in real time and sends the 3 rd water level value to a system control platform;
the system control platform judges whether the 2 nd water level value of the reservoir (9) meets the requirement in real time according to the detection data transmitted by the 3 rd liquid level meter (22), if not, a deep well pump (17) is started, the deep well pump (17) takes water from a deep well (10) and conveys the water to the reservoir (9), and when the highest water level requirement is met, the deep well pump (17) is closed; thereby always maintaining the water level in the reservoir (9) to meet the requirements;
the system control platform judges whether the 1 st water level value of the high-level fire-fighting water tank (8) meets the requirement in real time according to the detection data transmitted by the 2 nd liquid level meter (21), if the 1 st water level value does not meet the water level requirement, the water delivery pump (19) is started, the water delivery pump (19) pumps water from the water reservoir (9), the water is pumped to the high-level fire-fighting water tank (8) through the 3 rd water supply pipe (18), and the water delivery pump (19) is closed until the water delivery pump meets the requirement; thereby always maintaining the water level in the high-level fire-fighting water tank (8) to meet the requirement;
the system control platform judges whether the 3 rd water level value of the in-hole conversion water tank (7) meets the requirement in real time according to the detection data transmitted by the 1 st liquid level meter (20), if not, the 3 rd electromagnetic valve (14) is opened for water supplementing, and the water supplementing method comprises the following steps: after water in the high-level fire water tank (8) passes through the front water supply sub-ring (B3) under the action of gravity, the water flows into the water supplementing pipe (13) and finally flows into the in-hole conversion water tank (7), so that water supplementing of the in-hole conversion water tank (7) is realized, and when the real-time water level value after water supplementing of the in-hole conversion water tank (7) meets the requirement, the 3 rd electromagnetic valve (14) is closed; thereby always maintaining the water level in the conversion water tank (7) in the hole to meet the requirement;
step 3.1, on one hand, starting a booster pump (29), wherein the booster pump (29) conveys water in a hole-in-hole conversion water tank (7) to a rear-end water supply sub-ring (B1), opening a fire hydrant in the hole at a corresponding position, and providing fire extinguishing requirements for a fire disaster occurrence position by fire fighting pipeline water in the rear-end water supply sub-ring (B1); on the other hand, the system control platform controls the state of the 3 rd electromagnetic valve (14) in real time based on the detection value of the 1 st liquid level meter (20), so that water in the high-level fire-fighting water tank (8) flows into the in-hole conversion water tank (7) under the action of gravity, timely water supplementing of the in-hole conversion water tank (7) is realized, and the water level of the in-hole conversion water tank (7) in the working state still meets the requirement; step 3.2, if the pressurizing pump (29) and the in-hole conversion water tank (7) are in failure, opening the 1 st electromagnetic valve (11) and the 2 nd electromagnetic valve (12) and closing the 5 th electromagnetic valve (32);
the water in the high-level fire-fighting water pool (8) flows along the left tunnel fire-fighting pipeline (1) and the right tunnel fire-fighting pipeline (2) under the action of gravity, is finally conveyed to the rear-end water supply sub-ring (B1), the fire hydrant in the hole at the corresponding position is opened, and the fire-extinguishing requirement on the fire occurrence position is provided by the fire-fighting pipeline water in the rear-end water supply sub-ring (B1);
3.3, on one hand, starting a booster pump (29), wherein the booster pump (29) conveys water in the in-hole conversion water tank (7) to the rear-end water supply sub-ring (B1), opening an in-hole hydrant at a corresponding position, and providing fire extinguishing requirements for a fire disaster occurrence position by fire fighting pipeline water in the rear-end water supply sub-ring (B1); on the other hand, the system control platform controls the 3 rd electromagnetic valve (14) to be in a closed state, water is not supplemented to the in-hole conversion water tank (7), and the design capacity of the in-hole conversion water tank (7) meets the fire extinguishing requirement of a design scene;
step 4.1, a 4 th electromagnetic valve (31) is kept in an open state, on the one hand, water in a high-level fire-fighting water tank (8) flows into a front-end water supply sub-ring (B3) under the action of gravity, a fire hydrant in a hole at a corresponding position is opened, and fire extinguishing requirements on a fire disaster occurrence position are provided by fire-fighting pipeline water in the front-end water supply sub-ring (B3); on the other hand, the system control platform controls the water delivery pump (19) and the deep well pump (17) to make water in the deep well (10) timely supplement water to the reservoir (9), and the reservoir (9) timely supplement water to the high-level fire-fighting water tank (8), so that the water level of the high-level fire-fighting water tank (8) still meets the requirements in the working state;
and 4.2, closing the 4 th electromagnetic valve (31), opening the 1 st electromagnetic valve (11) and the 2 nd electromagnetic valve (12) by the system control platform, at the moment, simultaneously conveying water in the in-hole conversion water tank (7) to the rear-end water supply sub-ring (B1), the middle communicating sub-ring (B2) and the front-end water supply sub-ring (B3) by the pressure pump (29), and opening fire hydrant in the hole at the corresponding position due to the fire fighting water obtained by the front-end water supply sub-ring (B3), so that the function of extinguishing fire at the fire disaster occurrence position is realized.
The regional water supply fire-fighting system and the regional water supply fire-fighting method for the ultra-long highway tunnel provided by the invention have the following advantages:
according to the invention, the tunnel water fire-fighting system can be divided into two or more fire-fighting water supply systems which are independent and can be communicated with each other by arranging the in-tunnel conversion water pool in the tunnel, so that the reliability of the tunnel fire-fighting system is improved, and the problems of excessively high overpressure and overlong water supply distance of the system and poor reliability are solved.
Drawings
Fig. 1 is a schematic diagram of an arrangement mode of a regional water supply fire protection system for an ultralong highway tunnel.
Detailed Description
In order to make the technical problems, technical schemes and beneficial effects solved by the invention more clear, the invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
For a single-slope tunnel, a stable high-pressure water supply system of a high-level water tank is generally adopted in the tunnel water fire control system, and under a fire disaster working condition, the fire control pressurization water supply of the tunnel is realized by utilizing the height difference between the high-level water tank and a fire hydrant. However, in the scheme, the water supply distance is too long, and once a problem occurs in an intermediate pipeline, or a decompression system fails, the whole system is paralyzed, so that the operation safety of a tunnel is affected. Aiming at the ultra-long tunnel or the tunnel with overlarge entrance and exit height difference, the invention solves the technical problems of single-end water supply overpressure and poor system reliability. According to the invention, the tunnel water fire-fighting system can be divided into two (or more) fire-fighting water supply systems which are independent and can be communicated with each other by arranging the in-tunnel conversion water pool in the tunnel, so that the reliability of the tunnel fire-fighting system is improved, and the problems of excessively high overpressure and overlong water supply distance of the system and poor reliability are solved. The scheme has the outstanding advantages of simple system structure, flexible control, small post maintenance amount and the like. The scheme can effectively improve the reliability of the tunnel water fire-fighting system, and can be applied to an ultra-long tunnel (about 10 km), a tunnel with overlarge height difference (the height difference exceeds 100 m), a long-distance herringbone slope tunnel (the problem of insufficient water pressure or overpressure exists in single-side water supply) and the like.
The ultra-long highway tunnel zoned water supply fire-fighting system and the water supply fire-fighting method provided by the invention have the following advantages:
(1) The technical problem of poor water supply reliability caused by too long water supply distance (taking a 10km tunnel as an example) and too many valves (about 800) and too many water pipe connectors (about 3600) is solved;
(2) The technical problem that the pressure reducing valve has high requirement on water quality, and the mountain tunnel is easy to fail, so that the water pipe is cracked is solved. In the traditional scheme, a plurality of pressure reducing valves are required to be arranged when the height difference between the tunnel inlet and the tunnel outlet is too large, and the pressure reducing valves have poor static pressure reducing effect because the pressure reducing valves have higher requirements on water quality and easily block filter holes in the field environment. Once the pressure reducing valve fails, the water pipe bursts, and frequent maintenance and repair are required;
(3) The problem that high-level water pools are needed to be arranged on two sides for water supply for the long-distance herringbone slope tunnel is solved, and engineering investment and system maintenance are reduced.
The invention provides a regional water supply fire-fighting system for an ultralong highway tunnel, which comprises the following components with reference to figure 1: the fire-fighting pipeline comprises a left-line tunnel fire-fighting pipeline 1, a right-line tunnel fire-fighting pipeline 2, a first transverse connecting pipeline 3, a second transverse connecting pipeline 4, a third transverse connecting pipeline 5, a fourth transverse connecting pipeline 6, an in-tunnel conversion water tank 7, a high-level fire-fighting water tank 8, a water reservoir 9 and a deep well 10;
a left-line tunnel fire-fighting pipeline 1 is fixedly arranged in the pipe ditch of the left-line tunnel along the driving direction of the tunnel; a right-line tunnel fire-fighting pipeline 2 is fixedly arranged in the tunnel trench of the right-line tunnel along the driving direction of the tunnel;
the front end of the left-line tunnel fire-fighting pipeline 1 is communicated with the front end of the right-line tunnel fire-fighting pipeline 2 through a first transverse communication pipeline 3; the rear end of the left-line tunnel fire-fighting pipeline 1 is communicated with the rear end of the right-line tunnel fire-fighting pipeline 2 through a second transverse communication pipeline 4; the left tunnel fire-fighting pipeline 1, the first transverse connecting pipeline 3, the right tunnel fire-fighting pipeline 2 and the second transverse connecting pipeline 4 are connected end to form a fire-fighting water supply loop; wherein the first lateral communication pipe 3, the second lateral communication pipe 4, the third lateral communication pipe 5 and the fourth lateral communication pipe 6 are all installed under the road surface;
a third transverse connecting pipeline 5 and a fourth transverse connecting pipeline 6 are sequentially and transversely arranged between the left-line tunnel fire-fighting pipeline 1 and the right-line tunnel fire-fighting pipeline 2 at intervals from the front end to the rear end; wherein, two ends of the third transverse connecting pipeline 5 are respectively communicated with the left-line tunnel fire-fighting pipeline 1 and the right-line tunnel fire-fighting pipeline 2; two ends of the fourth transverse connecting pipeline 6 are respectively communicated with the left-line tunnel fire-fighting pipeline 1 and the right-line tunnel fire-fighting pipeline 2; the fire-fighting water supply main ring is divided into a rear-end water supply sub-ring B1, a middle communicating sub-ring B2 and a front-end water supply sub-ring B3 through the arrangement of the third transverse connecting pipeline 5 and the fourth transverse connecting pipeline 6;
wherein, the 1 st electromagnetic valve 11 is arranged on the left tunnel fire-fighting pipeline 1 and belongs to the area of the middle communicating sub-ring B2; a 2 nd electromagnetic valve 12 is arranged on the right tunnel fire-fighting pipeline 2 and belongs to the area of the middle communicating sub-ring B2;
a plurality of in-tunnel fire hydrants 25 are arranged on the left-line tunnel fire fighting pipeline 1 and the right-line tunnel fire fighting pipeline 2 along the length direction of the tunnel; a pressurizing pump 29 communicating with the 1 st water supply pipe 15 is provided in the in-hole conversion water tank 7.
The in-tunnel conversion pond 7 is arranged in the inner wall of the tunnel, the top surface of the in-tunnel conversion pond 7 is flush with the ground of the tunnel, the in-tunnel conversion pond 7 is used for realizing regional water supply to the tunnel, and the in-tunnel conversion pond provides a safety reserve for an ultra-long tunnel fire protection system. Specifically, the water supplementing end of the in-tunnel conversion water tank 7 is communicated with the water supplementing point of the left-line tunnel fire-fighting pipeline 1 through a water supplementing pipe 13, wherein the water supplementing point is positioned on the middle communicating rotor ring B2 and is positioned at the front end of the 1 st electromagnetic valve 11; a 3 rd electromagnetic valve 14 is arranged on the water supplementing pipe 13; the water supply end of the in-tunnel conversion water tank 7 is communicated with the water supply point of the left-line tunnel fire-fighting pipeline 1 through a 1 st water supply pipe 15; wherein the water supply point is positioned on the rear water supply sub-ring B1; a 5 th electromagnetic valve 32 is mounted on the 1 st water supply pipe 15.
The high-level fire-fighting water tank 8, the water reservoir 9 and the deep well 10 are all arranged outside the tunnel; a certain height difference exists between the high-level fire-fighting water tank 8 and the tunnel portal, so that the pressure of the fire-fighting equipment is ensured to meet the requirements. The 2 nd water supply pipe 16 is arranged between the deep well 10 and the reservoir 9, the 2 nd water supply pipe 16 has a pressurizing function for pressurizing and supplying water to the fire-fighting pipeline system, and the 4 th water supply pipe 30 also has a pressurizing function as the 4 th water supply pipe 30. The 2 nd water supply pipe 16 and the water supplementing pipe 13 have no pressurizing function and are simple water supplementing pipes.
A deep well pump 17 is arranged in the deep well 10, and the deep well pump 17 supplies water to the reservoir 9 through a 2 nd water supply pipe 16; a 3 rd water supply pipe 18 is arranged between the high-level fire water tank 8 and the water reservoir 9, a water delivery pump 19 is arranged in the water reservoir 9, and the water delivery pump 19 supplies water to the high-level fire water tank 8 through the 3 rd water supply pipe 18; the water delivery end of the high-level fire water tank 8 is communicated with the front water supply sub-ring B3 through a 4 th water supply pipe 30; the output end of the 4 th water supply pipe 30 is provided with a 4 th electromagnetic valve 31.
On the one hand, fire water in the high-level fire-fighting water tank 8 enters the front water supply sub-ring B3 of the fire-fighting pipe network under the action of gravity to supply water to equipment such as fire hydrants in a certain area.
On the other hand, the water in the high-level fire-fighting water tank 8 passes through the fire-fighting pipe network, and after passing a certain distance along the longitudinal direction of the tunnel, is fed into the in-tunnel conversion water tank 7 through the water supplementing pipe 13. Therefore, the fire hydrant and other devices of the in-hole conversion water tank 7 and the front water supply sub-ring B3 are directly supplied with water at normal high pressure by the high-position fire water tank 8. The front water supply sub-ring B3 supplies water by gravity through the in-hole transfer pool 7 or supplies water under pressure through a booster pump. By controlling the closing and opening of solenoid valve 1 and solenoid valve 2, 11 and solenoid valve 12, separation and communication of the two water supply systems can be achieved.
In practical application, a tunnel with the length of a single hole being more than 8000m or the height difference exceeding 100m is provided with a hole-changing water tank at the middle position of the tunnel or at the position of the hydrostatic pressure difference between a high-level fire water tank and the water outlet point of the fire hydrant of 0.7-0.8 Mpa; the in-tunnel conversion pool can be used for supplying water to the downstream by adopting a pressurized water pump to carry out a high-pressure water supply scheme or realizing a gravity water supply scheme through the height difference with the point of fire-fighting equipment.
When the pressurized water pump supply scheme is adopted, the pressurized pump needs to consider that the pressure at the most disadvantageous point is not less than 0.35mpa, namely: meets the fire-fighting pressure requirement. When the gravity water supply scheme is adopted, the pressure difference between the bottom of the conversion water tank in the cavity and the hydrant bolt opening is not smaller than 35m.
The in-tunnel transfer pond water supply is fed from the upstream high-level fire pond 8 through the fire pipe. At this time, the in-hole change pool water supply determines the opening and closing of the 3 rd solenoid valve 14 according to the data of the water level sensor in the in-hole change pool.
If the underground water in the hole is rich, the water collected by the drainage ditch can be used for being pumped into the hole to change the water pool.
In-hole conversion pool volume v=q Inner part +Q Outer part ＝nq Inner part t+q Outer part t
V-change pool volume in hole (m) 3 )；
Q Inner part Water consumption (m) of in-hole hydrant 3 )；
Q Outer part Water consumption (m) of external fire hydrant 3 )；
n. number of opened hydrants, the value is specifically referred to the highway tunnel design Specification (second volume traffic engineering and accessory facility JTG D70/2-2014)
t: duration of fire, the values are specifically referred to in the Highway Tunnel design Specification (second volume traffic engineering and accessory facility JTG D70/2-2014)
q Inner part : the water consumption of the single indoor hydrant is generally 5L/S. The water consumption of a fixed water film-forming fire extinguishing device is generally considered, and the single branch is generally 0.5L/S.
q Outer part : the water consumption of the outdoor hydrant is generally 20L/S.
In practical application, in order to realize the automatic water replenishing function of the in-tunnel conversion water tank, the high-position fire water tank and the reservoir, a 1 st liquid level meter 20 is arranged in the in-tunnel conversion water tank 7; a 2 nd liquid level meter 21 is arranged in the high-level fire-fighting pool 8; a 3 rd liquid level meter 22 is arranged in the reservoir 9;
the output ends of the 1 st liquid level meter 20, the 2 nd liquid level meter 21 and the 3 rd liquid level meter 22 are connected with a system control platform; the output end of the system control platform is respectively connected with the 1 st electromagnetic valve 11, the 2 nd electromagnetic valve 12, the 3 rd electromagnetic valve 14, the 4 th electromagnetic valve 31 and the 5 th electromagnetic valve 32.
In addition, a plurality of fire detectors are arranged at different positions of the left tunnel and the right tunnel; the output end of the fire detector is connected to the system control platform.
The invention also provides the following auxiliary components:
the filter 23 is arranged on the 4 th water supply pipe 30, and through filtering the water, devices such as a downstream flowing electromagnetic valve are prevented from being influenced, and the service life of the electromagnetic valve is prolonged. A slow-closing check valve 24 is installed on the 4 th water supply pipe 30.
The first lateral communication pipe 3 and the second lateral communication pipe 4 are each provided with an out-hole hydrant 26 and a water pump adaptor 27.
The ends of the first and second cross connecting pipes 3, 4 are each fitted with a blow-off valve 28.
The invention also provides a fire-fighting water supply method based on the ultra-long highway tunnel zoned water supply fire-fighting system, which comprises the following steps:
step 1, under the condition that no fire disaster occurs at ordinary times, the system control platform controls the 1 st electromagnetic valve 11 and the 2 nd electromagnetic valve 12 to be in a closed state, and the 4 th electromagnetic valve 31 to be in an open state; the 5 th electromagnetic valve 32 is in an open state;
at this time, the 2 nd liquid level meter 21 installed in the high-level fire-fighting water tank 8 detects the 1 st water level value in the high-level fire-fighting water tank 8 in real time and sends the 1 st water level value to the system control platform; a 3 rd liquid level meter 22 arranged in the reservoir 9 detects the 2 nd water level value in the reservoir in real time and sends the 2 nd water level value to a system control platform; the 1 st liquid level meter 20 installed in the in-hole conversion water tank 7 detects the 3 rd water level value in the in-hole conversion water tank 7 in real time and sends the 3 rd water level value to the system control platform;
the system control platform judges whether the 2 nd water level value of the reservoir 9 meets the requirement in real time according to the detection data transmitted by the 3 rd liquid level meter 22, if not, the deep well pump 17 is started, the deep well pump 17 takes water from the deep well 10 and conveys the water to the reservoir 9, and when the highest water level requirement is met, the deep well pump 17 is closed; thereby always maintaining the water level in the reservoir 9 to meet the requirements;
the system control platform judges whether the 1 st water level value of the high-level fire-fighting water tank 8 meets the requirement in real time according to the detection data transmitted by the 2 nd liquid level meter 21, if the 1 st water level value does not meet the water level requirement, the water delivery pump 19 is started, the water delivery pump 19 pumps water from the water reservoir 9 and pumps the water to the high-level fire-fighting water tank 8 through the 3 rd water supply pipe 18, and the water delivery pump 19 is closed until the water delivery pump 19 meets the requirement; thereby always maintaining the water level in the high-level fire-fighting pool 8 to meet the requirements;
the system control platform judges whether the 3 rd water level value of the in-hole conversion water tank 7 meets the requirement in real time according to the detection data transmitted by the 1 st liquid level meter 20, if not, the 3 rd electromagnetic valve 14 is opened for water supplementing, and the water supplementing method comprises the following steps: after passing through the front water supply sub-ring B3 under the action of gravity, water in the high-level fire water tank 8 flows into the water supplementing pipe 13 and finally flows into the in-hole conversion water tank 7, so that water supplementing of the in-hole conversion water tank 7 is realized, and when the real-time water level value after water supplementing of the in-hole conversion water tank 7 meets the requirement, the 3 rd electromagnetic valve 14 is closed; thereby always maintaining the water level in the in-hole transfer water tank 7 to meet the requirements;
step 3.1, on one hand, starting a booster pump 29, wherein the booster pump 29 conveys water in the in-hole water tank 7 to the rear-end water supply sub-ring B1, starting a fire hydrant in the corresponding position, and providing fire extinguishing requirements for a fire disaster occurrence position by fire fighting pipeline water in the rear-end water supply sub-ring B1; on the other hand, the system control platform controls the state of the 3 rd electromagnetic valve 14 in real time based on the detection value of the 1 st liquid level meter 20, so that water in the high-level fire water tank 8 flows into the in-hole conversion water tank 7 under the action of gravity, timely water supplementing of the in-hole conversion water tank 7 is realized, and the water level of the in-hole conversion water tank 7 in the working state still meets the requirements;
step 3.2, if the pressurizing pump 29 and the in-hole switching water tank 7 fail, opening the 1 st electromagnetic valve 11 and the 2 nd electromagnetic valve 12, and closing the 5 th electromagnetic valve 32;
the water in the high-level fire-fighting water pool 8 flows along the left-line tunnel fire-fighting pipeline 1 and the right-line tunnel fire-fighting pipeline 2 under the action of gravity, is finally conveyed to the rear-end water supply sub-ring B1, the fire hydrant in the corresponding position is opened, and the fire-fighting pipeline water in the rear-end water supply sub-ring B1 provides fire-extinguishing requirements for the fire disaster occurrence position;
step 3.3, on one hand, starting a booster pump 29, wherein the booster pump 29 conveys water in the in-hole water tank 7 to the rear-end water supply sub-ring B1, opening an in-hole fire hydrant at a corresponding position, and providing fire extinguishing requirements for a fire disaster occurrence position by fire fighting pipeline water in the rear-end water supply sub-ring B1; on the other hand, the system control platform controls the 3 rd electromagnetic valve 14 to be in a closed state, water is not supplemented to the in-hole conversion water tank 7, and the design capacity of the in-hole conversion water tank 7 meets the fire extinguishing requirement of the design scene;
step 4.1, the 4 th electromagnetic valve 31 is kept in an open state, on the one hand, water in the high-level fire-fighting water tank 8 flows into the front-end water supply sub-ring B3 under the action of gravity, a fire hydrant in a hole at a corresponding position is opened, and fire extinguishing demands on a fire disaster occurrence position are provided by fire-fighting pipeline water in the front-end water supply sub-ring B3; on the other hand, the system control platform controls the water delivery pump 19 and the deep well pump 17, so that water in the deep well 10 is timely supplemented to the reservoir 9, and the reservoir 9 is timely supplemented to the high-level fire-fighting water tank 8, and the water level of the high-level fire-fighting water tank 8 in a working state is ensured to still meet the requirement;
and 4.2, the system control platform closes the 4 th electromagnetic valve 31, opens the 1 st electromagnetic valve 11 and the 2 nd electromagnetic valve 12, at the moment, the pressurizing pump 29 simultaneously conveys the water in the in-hole conversion water tank 7 to the rear-end water supply sub-ring B1, the middle communicating sub-ring B2 and the front-end water supply sub-ring B3, and the fire hydrant in the hole at the corresponding position is opened due to the fire fighting water in the front-end water supply sub-ring B3, so that the function of extinguishing the fire at the fire occurrence position is realized.
The regional water supply fire-fighting system and the regional water supply fire-fighting method for the ultra-long highway tunnel provided by the invention have the following advantages:
the problems that the water supply distance of an ultra-long tunnel is too long (taking a 10km tunnel as an example), the number of valves is too large (about 800), the number of water pipe connectors is too large (about 34000), the water supply reliability is poor, and once the water pipe is broken or the valves are damaged, the whole fire protection system is paralyzed are solved;
the problems that a tunnel with overlarge height difference is required to be provided with a plurality of pressure reducing valves, the requirement on water quality is high, the maintenance amount is large and the system reliability is poor are solved;
the problems that a long-distance herringbone slope tunnel cannot meet the water supply requirement due to the fact that a high-level water tank is arranged on one end, a fire-fighting system is arranged on the other end, the investment scale is overlarge, and the maintenance amount is large are solved.
Therefore, the invention provides a new design thought and scheme for the ultra-long highway tunnel fire-fighting system, and has lower engineering cost, smaller post maintenance and higher system reliability.
The foregoing is merely a preferred embodiment of the present invention and it should be noted that modifications and adaptations to those skilled in the art may be made without departing from the principles of the present invention, which is also intended to be covered by the present invention.
Claims (7)
1. An ultralong highway tunnel zoned water supply fire protection system, comprising: the fire-fighting system comprises a left-line tunnel fire-fighting pipeline (1), a right-line tunnel fire-fighting pipeline (2), a first transverse connecting pipeline (3), a second transverse connecting pipeline (4), a third transverse connecting pipeline (5), a fourth transverse connecting pipeline (6), an in-hole conversion water tank (7), a high-level fire-fighting water tank (8), a water reservoir (9) and a deep well (10);
the left-line tunnel fire-fighting pipeline (1) is fixedly installed in the pipe ditch of the left-line tunnel along the driving direction of the tunnel; the right tunnel fire-fighting pipeline (2) is fixedly installed in the tunnel trench of the right tunnel along the driving direction of the tunnel; the front end of the left tunnel fire-fighting pipeline (1) is communicated with the front end of the right tunnel fire-fighting pipeline (2) through the first transverse communication pipeline (3); the rear end of the left tunnel fire-fighting pipeline (1) is communicated with the rear end of the right tunnel fire-fighting pipeline (2) through the second transverse communication pipeline (4); the left-line tunnel fire-fighting pipeline (1), the first transverse connecting pipeline (3), the right-line tunnel fire-fighting pipeline (2) and the second transverse connecting pipeline (4) are connected end to form a fire-fighting water supply loop; wherein the first lateral communication pipe (3), the second lateral communication pipe (4), the third lateral communication pipe (5) and the fourth lateral communication pipe (6) are all installed under a road surface;
the third transverse connecting pipeline (5) and the fourth transverse connecting pipeline (6) are sequentially and transversely arranged between the left-line tunnel fire-fighting pipeline (1) and the right-line tunnel fire-fighting pipeline (2) at intervals from the front end to the rear end; two ends of the third transverse connecting pipeline (5) are respectively communicated with the left-line tunnel fire-fighting pipeline (1) and the right-line tunnel fire-fighting pipeline (2); two ends of the fourth transverse connecting pipeline (6) are respectively communicated with the left-line tunnel fire-fighting pipeline (1) and the right-line tunnel fire-fighting pipeline (2); the fire-fighting water supply main ring is divided into a rear-end water supply sub-ring (B1), a middle communicating sub-ring (B2) and a front-end water supply sub-ring (B3) through the arrangement of the third transverse connecting pipeline (5) and the fourth transverse connecting pipeline (6);
wherein, a 1 st electromagnetic valve (11) is arranged on the left tunnel fire-fighting pipeline (1) and belongs to the area of the middle communicating sub-ring (B2); a 2 nd electromagnetic valve (12) is arranged on the right tunnel fire-fighting pipeline (2) and belongs to the area of the middle communicating sub-ring (B2);
the water supplementing end of the in-tunnel conversion water tank (7) is communicated with the water supplementing point of the left-line tunnel fire-fighting pipeline (1) through a water supplementing pipe (13), wherein the water supplementing point is positioned on the middle communicating sub-ring (B2) and is positioned at the front end of the 1 st electromagnetic valve (11); a 3 rd electromagnetic valve (14) is arranged on the water supplementing pipe (13); the water supply end of the in-tunnel conversion water tank (7) is communicated with the water supply point of the left-line tunnel fire-fighting pipeline (1) through a 1 st water supply pipe (15); wherein the water supply point is located above the rear water supply sub-ring (B1); a 5 th electromagnetic valve (32) is arranged on the 1 st water supply pipe (15);
the high-level fire-fighting water tank (8), the water reservoir (9) and the deep well (10) are all arranged outside the tunnel; a 2 nd water supply pipe (16) is arranged between the deep well (10) and the water reservoir (9), a deep well pump (17) is arranged in the deep well (10), and the deep well pump (17) supplies water to the water reservoir (9) through the 2 nd water supply pipe (16); a 3 rd water supply pipe (18) is arranged between the high-level fire water tank (8) and the water storage tank (9), a water delivery pump (19) is arranged in the water storage tank (9), and the water delivery pump (19) supplies water to the high-level fire water tank (8) through the 3 rd water supply pipe (18); the water delivery end of the high-level fire water tank (8) is communicated with the front-end water supply sub-ring (B3) through a 4 th water supply pipe (30); the output end of the 4 th water supply pipe (30) is provided with a 4 th electromagnetic valve (31);
wherein a 1 st liquid level meter (20) is arranged in the in-hole conversion water tank (7); a 2 nd liquid level meter (21) is arranged in the high-level fire-fighting pool (8); a 3 rd liquid level meter (22) is arranged in the reservoir (9);
the output ends of the 1 st liquid level meter (20), the 2 nd liquid level meter (21) and the 3 rd liquid level meter (22) are connected with a system control platform; the output end of the system control platform is respectively connected with the 1 st electromagnetic valve (11), the 2 nd electromagnetic valve (12), the 3 rd electromagnetic valve (14), the 4 th electromagnetic valve (31) and the 5 th electromagnetic valve (32);
the ends of the first transverse communication pipeline (3) and the second transverse communication pipeline (4) are respectively provided with an emptying valve/exhaust valve (28).
2. The regional water supply fire protection system for extra-long highway tunnels according to claim 1, wherein a plurality of fire detectors are installed at different positions of the left-hand tunnel and the right-hand tunnel; the output end of the fire detector is connected to the system control platform.
3. An ultralong highway tunnel zoned water supply fire protection system according to claim 1, wherein a filter (23) is installed on the 4 th water supply pipe (30).
4. An ultralong highway tunnel zoned water supply fire protection system according to claim 1, wherein a slow-closing check valve (24) is installed on the 4 th water supply pipe (30).
5. The regional water supply fire control system for extra-long highway tunnels according to claim 1, wherein a plurality of in-tunnel fire hydrants (25) are installed above the left-line tunnel fire control pipeline (1) and the right-line tunnel fire control pipeline (2) along the length direction of the tunnels;
a pressurizing pump (29) communicated with the 1 st water supply pipe (15) is arranged in the in-hole conversion water tank (7).
6. An ultralong highway tunnel zoned water supply fire protection system according to claim 1, characterized in that the first transverse connecting pipe (3) and the second transverse connecting pipe (4) are both provided with an out-of-hole hydrant (26) and a water pump adaptor (27).
7. A fire water supply method based on the ultra-long highway tunnel zoned water supply fire protection system according to any one of claims 1-6, characterized by comprising the following steps:
step 1, under the condition that no fire disaster occurs at ordinary times, the system control platform controls the 1 st electromagnetic valve (11) and the 2 nd electromagnetic valve (12) to be in a closed state, and the 4 th electromagnetic valve (31) to be in an open state; the 5 th electromagnetic valve (32) is in an open state;
at the moment, a 2 nd liquid level meter (21) arranged in the high-level fire-fighting water tank (8) detects a 1 st water level value in the high-level fire-fighting water tank (8) in real time and sends the 1 st water level value to a system control platform; a 3 rd liquid level meter (22) arranged in the reservoir (9) detects a 2 nd water level value in the reservoir in real time and sends the 2 nd water level value to a system control platform; a 1 st liquid level meter (20) arranged in the in-hole conversion water tank (7) detects a 3 rd water level value in the in-hole conversion water tank (7) in real time and sends the 3 rd water level value to a system control platform;
the system control platform judges whether the 2 nd water level value of the reservoir (9) meets the requirement in real time according to the detection data transmitted by the 3 rd liquid level meter (22), if not, a deep well pump (17) is started, the deep well pump (17) takes water from a deep well (10) and conveys the water to the reservoir (9), and when the highest water level requirement is met, the deep well pump (17) is closed; thereby always maintaining the water level in the reservoir (9) to meet the requirements;
the system control platform judges whether the 1 st water level value of the high-level fire-fighting water tank (8) meets the requirement in real time according to the detection data transmitted by the 2 nd liquid level meter (21), if the 1 st water level value does not meet the water level requirement, the water delivery pump (19) is started, the water delivery pump (19) pumps water from the water reservoir (9), the water is pumped to the high-level fire-fighting water tank (8) through the 3 rd water supply pipe (18), and the water delivery pump (19) is closed until the water delivery pump meets the requirement; thereby always maintaining the water level in the high-level fire-fighting water tank (8) to meet the requirement;
the system control platform judges whether the 3 rd water level value of the in-hole conversion water tank (7) meets the requirement in real time according to the detection data transmitted by the 1 st liquid level meter (20), if not, the 3 rd electromagnetic valve (14) is opened for water supplementing, and the water supplementing method comprises the following steps: after water in the high-level fire water tank (8) passes through the front water supply sub-ring (B3) under the action of gravity, the water flows into the water supplementing pipe (13) and finally flows into the in-hole conversion water tank (7), so that water supplementing of the in-hole conversion water tank (7) is realized, and when the real-time water level value after water supplementing of the in-hole conversion water tank (7) meets the requirement, the 3 rd electromagnetic valve (14) is closed; thereby always maintaining the water level in the conversion water tank (7) in the hole to meet the requirement;
step 2, the system control platform detects whether fire disaster happens to the corresponding positions of the left tunnel and the right tunnel in real time through fire disaster detectors arranged at different positions of the left tunnel and the right tunnel, and when the fire disaster is detected, the system control platform further judges whether the position where the flood disaster happens belongs to a rear-end water supply sub-ring (B1) or a front-end water supply sub-ring (B3); if the water belongs to the rear-end water supply sub-ring (B1), executing the step 3; if the water belongs to the front-end water supply sub-ring (B3), executing the step 4;
step 3, the system control platform further judges whether the water supply of the high-level fire water pond (8) fails, if no failure exists, if the pressurizing pump (29) and the in-hole conversion water pond (7) do not fail, the step 3.1 is executed; if the pressurizing pump (29) and the in-hole conversion water tank (7) fail, executing the step 3.2; if the water supply of the high-level fire-fighting pool (8) fails, executing the step 3.3;
step 3.1, on one hand, starting a booster pump (29), wherein the booster pump (29) conveys water in a hole-in-hole conversion water tank (7) to a rear-end water supply sub-ring (B1), opening a fire hydrant in the hole at a corresponding position, and providing fire extinguishing requirements for a fire disaster occurrence position by fire fighting pipeline water in the rear-end water supply sub-ring (B1); on the other hand, the system control platform controls the state of the 3 rd electromagnetic valve (14) in real time based on the detection value of the 1 st liquid level meter (20), so that water in the high-level fire-fighting water tank (8) flows into the in-hole conversion water tank (7) under the action of gravity, timely water supplementing of the in-hole conversion water tank (7) is realized, and the water level of the in-hole conversion water tank (7) in the working state still meets the requirement; step 3.2, if the pressurizing pump (29) and the in-hole conversion water tank (7) are in failure, opening the 1 st electromagnetic valve (11) and the 2 nd electromagnetic valve (12) and closing the 5 th electromagnetic valve (32);
the water in the high-level fire-fighting water pool (8) flows along the left tunnel fire-fighting pipeline (1) and the right tunnel fire-fighting pipeline (2) under the action of gravity, is finally conveyed to the rear-end water supply sub-ring (B1), the fire hydrant in the hole at the corresponding position is opened, and the fire-extinguishing requirement on the fire occurrence position is provided by the fire-fighting pipeline water in the rear-end water supply sub-ring (B1);
3.3, on one hand, starting a booster pump (29), wherein the booster pump (29) conveys water in the in-hole conversion water tank (7) to the rear-end water supply sub-ring (B1), opening an in-hole hydrant at a corresponding position, and providing fire extinguishing requirements for a fire disaster occurrence position by fire fighting pipeline water in the rear-end water supply sub-ring (B1); on the other hand, the system control platform controls the 3 rd electromagnetic valve (14) to be in a closed state, water is not supplemented to the in-hole conversion water tank (7), and the design capacity of the in-hole conversion water tank (7) meets the fire extinguishing requirement of a design scene;
step 4, the system control platform judges whether the water supply of the high-level fire-fighting pool (8) fails, and if no failure exists, the step 4.1 is executed; if the fault occurs, executing the step 4.2;
step 4.1, a 4 th electromagnetic valve (31) is kept in an open state, on the one hand, water in a high-level fire-fighting water tank (8) flows into a front-end water supply sub-ring (B3) under the action of gravity, a fire hydrant in a hole at a corresponding position is opened, and fire extinguishing requirements on a fire disaster occurrence position are provided by fire-fighting pipeline water in the front-end water supply sub-ring (B3); on the other hand, the system control platform controls the water delivery pump (19) and the deep well pump (17) to make water in the deep well (10) timely supplement water to the reservoir (9), and the reservoir (9) timely supplement water to the high-level fire-fighting water tank (8), so that the water level of the high-level fire-fighting water tank (8) still meets the requirements in the working state;
and 4.2, closing the 4 th electromagnetic valve (31), opening the 1 st electromagnetic valve (11) and the 2 nd electromagnetic valve (12) by the system control platform, at the moment, simultaneously conveying water in the in-hole conversion water tank (7) to the rear-end water supply sub-ring (B1), the middle communicating sub-ring (B2) and the front-end water supply sub-ring (B3) by the pressure pump (29), and opening fire hydrant in the hole at the corresponding position due to the fire fighting water obtained by the front-end water supply sub-ring (B3), so that the function of extinguishing fire at the fire disaster occurrence position is realized.
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| CN110552398A (en) * | 2019-08-08 | 2019-12-10 | 浙江宁波甬台温高速公路有限公司 | tunnel fire control water supply double-supply system |
| CN110735463A (en) * | 2019-09-30 | 2020-01-31 | 武汉中交交通工程有限责任公司 | Fire-fighting water supply system for super-long tunnels |
| CN114622946B (en) * | 2022-04-12 | 2023-02-07 | 南京市建设工程消防审验服务中心 | Fire fighting equipment for urban rail transit tunnel and fire fighting method based on fire fighting equipment |
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