CN113513353B - Smoke-proof evacuation method and system for ultra-long safety channel of longitudinal relay type tunnel - Google Patents
Smoke-proof evacuation method and system for ultra-long safety channel of longitudinal relay type tunnel Download PDFInfo
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- CN113513353B CN113513353B CN202110835926.2A CN202110835926A CN113513353B CN 113513353 B CN113513353 B CN 113513353B CN 202110835926 A CN202110835926 A CN 202110835926A CN 113513353 B CN113513353 B CN 113513353B
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- 238000000034 method Methods 0.000 title claims abstract description 10
- 239000000779 smoke Substances 0.000 claims abstract description 31
- 230000002457 bidirectional effect Effects 0.000 claims abstract description 23
- 230000002265 prevention Effects 0.000 claims abstract description 13
- 230000006698 induction Effects 0.000 claims abstract description 7
- 230000001681 protective effect Effects 0.000 claims abstract description 4
- 230000001105 regulatory effect Effects 0.000 claims description 6
- 239000007921 spray Substances 0.000 claims description 4
- 238000010276 construction Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 3
- 238000007664 blowing Methods 0.000 description 3
- 239000003546 flue gas Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 239000010410 layer Substances 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 206010000369 Accident Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000009545 invasion Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000029058 respiratory gaseous exchange Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 230000007480 spreading Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F1/00—Ventilation of mines or tunnels; Distribution of ventilating currents
- E21F1/003—Ventilation of traffic tunnels
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
- E21D9/14—Layout of tunnels or galleries; Constructional features of tunnels or galleries, not otherwise provided for, e.g. portals, day-light attenuation at tunnel openings
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F11/00—Rescue devices or other safety devices, e.g. safety chambers or escape ways
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F17/00—Methods or devices for use in mines or tunnels, not covered elsewhere
- E21F17/18—Special adaptations of signalling or alarm devices
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
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- Emergency Management (AREA)
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- Environmental & Geological Engineering (AREA)
- Fire Alarms (AREA)
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- Respiratory Apparatuses And Protective Means (AREA)
Abstract
The invention discloses a smoke prevention and evacuation method for a longitudinal relay type tunnel overlength safety channel, which comprises the following steps of S1: after the tunnel fire alarm system monitors that the roadway fires, the tunnel fire alarm system alarms to the FAS system, the FAS system sends out an instruction, and a pressurizing fan in the working well is started to send fresh air in the working well into the safety channel; s2: the positive pressure value in the safety channel is maintained through the adjustment of the residual pressure valve, a bidirectional relay jet fan taking a fireproof door near a fire disaster point as a center within 50-500 meters is used for opening and jetting high-speed air flow, and fresh air at two ends of the induction channel is conveyed to the fireproof door near the fire disaster point in a relay manner along the longitudinal direction of the tunnel by a working well; s3: the trapped personnel enter the slide room/stairwell through the evacuation ports near the fire disaster point and enter the safety passage through the protective door to escape to the working wells at the two ends of the tunnel. The invention also discloses a corresponding system. The invention can realize relay air supply in the channel to any place in the channel, and effectively ensures the personnel evacuation safety under the fire disaster working condition in the middle of the tunnel.
Description
Technical Field
The invention belongs to the technical field of highway tunnel safety evacuation and building smoke prevention, and particularly relates to a longitudinal relay type tunnel overlength safety channel smoke prevention evacuation method and system.
Background
The personnel safety channel of the highway tunnel is used as an escape channel for personnel in case of fire accident, and the reasonable layout and smoke prevention measures are important.
At present, in the field of underwater highway tunnels, as shown in fig. 1, a traditional single-layer shield tunnel generally adopts a lane plate evacuation mode, a safety channel (used for passing rescue vehicles and pedestrians), a stairwell/slide room/stairwell and a corridor are arranged below the lane plate, the roadway is generally provided with evacuation ports at regular intervals, the evacuation ports are communicated with the stairwell/slide room/stairwell below the plate, and the stairwell/slide room/stairwell, the safety channel (used for passing pedestrians and rescue vehicles) and other functional spaces are arranged below the lane plate. As shown in fig. 2, when a fire disaster occurs in the tunnel, personnel enter the stairwell/slide chamber/stairwell through the scattering ports and enter the safety channel from the stairwell/slide chamber/stairwell to escape to the working wells at the two ends of the tunnel. In order to ensure the evacuation safety of people, the safety channel needs to be kept in a positive pressure state, and certain door opening wind speed is required to be ensured when people enter the safety channel from a slide room/stairwell to open the fireproof door, and a pressurizing fan is generally arranged at the working wells at the two ends of the tunnel to pressurize and supply air to the safety channel. Above-mentioned safe passageway setting mode is when using in long tunnel, very long tunnel engineering, because the safe passageway is along journey air leakage point more, and the safe passageway is whole to remain malleation difficulty, and the pressurized amount of wind that sends into from safe passageway both ends hardly acts on middle part region, and when the tunnel middle part took place the conflagration, fire door department wind speed was less than the normative requirement when personnel evacuated to the safe passageway, can't effectively block flue gas invasion safe passageway, and this has the potential safety hazard to personnel evacuation.
Disclosure of Invention
Aiming at the defects or improvement demands of the prior art, the invention provides a smoke prevention system and a smoke prevention method for a longitudinal relay type tunnel overlength safety channel, wherein the space under a lane board is divided into a stairwell/slide stairwell/stairwell, a safety channel and other functional spaces, personnel enter the stairwell/slide stairwell/stairwell through a lane evacuation port and enter the safety channel for escape, the two-end closed safety channel is pressurized and blown through working wells at two ends of the tunnel, and meanwhile, a bidirectional relay jet fan is arranged in the safety channel, so that relay blowing in the channel to any place in the channel can be realized, personnel evacuation safety under the fire condition in the middle of the tunnel can be effectively ensured, and smoke can be ensured not to enter the personnel escape channel.
According to one aspect of the invention, a smoke evacuation method for a longitudinal relay type tunnel overlength safety channel is provided, which comprises the following steps:
s1: after the tunnel fire alarm system monitors that the roadway fires, the tunnel fire alarm system alarms to the FAS system, the FAS system sends out an instruction, and a pressurizing fan in the working well is started to send fresh air in the working well into the safety channel;
s2: the positive pressure value in the safety channel is maintained through the adjustment of the residual pressure valve, a bidirectional relay jet fan taking a fireproof door near a fire disaster point as a center within 50-500 meters is started to spray high-speed air flow, fresh air at two ends of the induction channel is conveyed to the fireproof door near the fire disaster point by the longitudinal relay of the tunnel by the working well, the section air speed of the fireproof door when the fireproof door is opened is ensured, and tunnel smoke is prevented from entering the safety channel;
s3: the trapped personnel enter the slide room/stairwell through the evacuation ports near the fire disaster point, enter the safety channel through the protective door and escape to the working wells at the two ends of the tunnel, thereby improving the safety and the fire prevention and disaster resistance of the long tunnel and the extra-long tunnel.
Further, in the step S2, the bidirectional relay jet fan is induced in a relay manner along the longitudinal direction of the tunnel from the working well to the middle direction, so that relay air supply to any position in the safety channel is realized.
Further, in the step S2, the bidirectional relay jet fan is turned off within 50 meters with the fireproof door near the fire disaster point as the center.
According to another aspect of the present invention, there is provided a longitudinal relay type tunnel overlength security passageway smoke evacuation system, comprising:
the personnel evacuation escape unit comprises evacuation ports arranged on two sides of the roadway, a slide room/stairwell arranged on one side of the bottom of the roadway and communicated with the evacuation ports, and a safety channel arranged at intervals with the slide room/stairwell;
the positive pressure adjusting unit comprises a working well arranged at two ends of the tunnel, a fresh air well arranged at the top of the working well and communicated with the outside, a pressurizing fan arranged in the working well and used for sending fresh air in the fresh air well into the safety channel, and a residual pressure valve arranged between the safety channel and the slide room/stairwell and used for adjusting the positive pressure in the safety channel;
and the long-distance relay air supply unit comprises at least one bidirectional relay jet fan arranged in the safety channel, and the bidirectional relay jet fan which takes a fireproof door near a fire disaster point as a center is used for opening and spraying high-speed air flow, so that fresh air at two ends of the induction channel is conveyed to the fireproof door near the fire disaster point in a relay manner along the longitudinal direction of the tunnel by the working well.
Further, the two-way relay jet fans are uniformly distributed in the safety channel at certain intervals.
Further, the safety channel is communicated with the slide room/stairwell through a fireproof door.
Further, the bidirectional relay jet fan avoids the fireproof door.
Further, the positive pressure adjusting unit comprises a pressurizing air pipe which is arranged in the working well and communicated with the pressurizing fan.
Further, the positive pressure adjusting unit comprises a pressurizing air supply opening arranged at the tail end of the pressurizing air pipe.
Further, other working spaces are formed in the other side of the bottom of the roadway.
In general, the above technical solutions conceived by the present invention, compared with the prior art, enable the following beneficial effects to be obtained:
1. according to the invention, the space under the lane board is divided into the stairwell/slide stairwell/stairwell, the safety channel and other functional spaces, personnel enter the stairwell/slide stairwell/stairwell through the evacuation port of the lane layer and enter the safety channel for escape, the two-end closed safety channel is pressurized and blown through the working wells at the two ends of the tunnel, and meanwhile, the bidirectional relay jet blower is arranged in the safety channel, so that relay blowing in the channel to any place in the channel can be realized, the personnel evacuation safety under the fire disaster working condition in the middle of the tunnel is effectively ensured, and the smoke is prevented from entering the personnel escape channel.
2. The invention solves the problems of poor pressurizing and air supplying effect, poor middle evacuation safety and the like of the traditional safety channel setting mode, does not need to damage and influence the whole structure under the tunnel lane plate, has the advantages of good pressurizing and air supplying effect, safety and reliability, can effectively ensure the section wind speed when the fireproof door is opened, prevents the tunnel flue gas from entering the escape channel, provides a convenient channel for personnel evacuation, and improves the operation safety and the fireproof disaster resistance of long tunnels and extra-long tunnels.
3. The safety channels are independently arranged, so that the sealing performance of the evacuation channels is ensured, the maintenance of the positive pressure state of the whole channel is facilitated, the intrusion of smoke into the evacuation channels can be effectively avoided, and the evacuation and respiration safety and visual field definition of personnel are ensured.
4. The invention can effectively ensure that the pressurizing air quantity is transmitted to any position in the channel in a relay way, effectively ensure that the section wind speed of the fireproof door meets the standard requirement when personnel enter the safety channel, effectively avoid the intrusion of smoke into the safety channel and avoid the problem of middle pressurizing failure.
5. The invention has the advantages of convenient construction and simple structure, does not need to destroy the civil structure under the shield tunnel lane plate, can conveniently realize the reconstruction of the existing tunnel smoke prevention system, and is also suitable for the design and construction of a newly built tunnel.
Drawings
FIG. 1 is a schematic diagram of a tunnel evacuation channel in the prior art;
FIG. 2 is a schematic cross-sectional view of a tunnel evacuation passageway structure in the prior art;
fig. 3 is a schematic flow chart of a smoke evacuation method for a longitudinal relay type tunnel overlength safety channel in an embodiment of the invention;
FIG. 4 is a schematic plan view of a smoke prevention measure and a technique of a relay type tunnel under-lane-plate safety channel provided by the invention;
FIG. 5 is a cross-sectional view of a tunnel lane under-plate of the security passageway provided by the present invention;
fig. 6 is a schematic diagram (vertical section) of the working principle of the smoke prevention system under the fire working condition.
Like reference numerals denote like technical features throughout the drawings, in particular: 1-dispersing openings; 2-slide/stairwell; 3-secure channel; 4-other functional space; 5-fireproof door; 501-fire door (open); 6-a working well; 7-a new wind well; 8-a booster fan; 9-pressurizing an air pipe; 10-pressurizing an air supply port; 11-a bidirectional relay jet fan; 12-residual pressure valve; 13-roadway; 14-fire spot.
Detailed Description
The present invention will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent. 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. In addition, the technical features of the embodiments of the present invention described below may be combined with each other as long as they do not collide with each other.
The embodiment of the invention provides a smoke-proof evacuation system for a longitudinal relay type tunnel overlength safety channel, which comprises a personnel evacuation escape unit, a positive pressure adjusting unit and a long-distance relay air supply unit. The personnel evacuation escape unit comprises evacuation ports 1 arranged at two sides of a roadway 13, a slide room/stairwell 2 arranged at one side of the bottom of the roadway 13 and communicated with the evacuation ports 1, and a safety channel 3 arranged at intervals between the slide room/stairwell 2, the positive pressure regulating unit comprises a working well 6 arranged at two ends of a tunnel, a fresh air well 7 arranged at the top of the working well 6 and communicated with the outside, a pressurizing fan 8 arranged in the working well 6 and used for sending fresh air in the fresh air well 7 into the safety channel, and a residual pressure valve 12 arranged between the safety channel 3 and the slide room/stairwell 2 and used for regulating positive pressure in the safety channel 3, and the long-distance relay air supply unit comprises at least one bidirectional relay jet fan 11 arranged in the safety channel 3, and the bidirectional relay jet fan is used for starting high-speed air flow in a range of 50-500 m around a fire door, and fresh air at two ends of the induction channel is longitudinally conveyed to a fire door around the fire point by the working well along the longitudinal relay of the tunnel. According to the invention, the space under the lane board is divided into the stairwell/slide stairwell/stairwell, the safety channel and other functional spaces, personnel enter the stairwell/slide stairwell/stairwell through the evacuation port of the lane layer and enter the safety channel for escape, the two-end closed safety channel is pressurized and blown through the working wells at the two ends of the tunnel, and meanwhile, the bidirectional relay jet blower is arranged in the safety channel, so that relay blowing in the channel to any place in the channel can be realized, the personnel evacuation safety under the fire disaster working condition in the middle of the tunnel is effectively ensured, and the smoke is prevented from entering the personnel escape channel.
Specifically, as shown in fig. 4-6, in the embodiment of the invention, a smoke evacuation system of a longitudinal relay type tunnel overlength safety channel comprises an evacuation port 1 positioned at the side part of a roadway 13, a space under a plate of the roadway 13 is divided into a slide room/stairwell 2, a safety channel 3 and other functional spaces 4, the evacuation port 1 is communicated with the slide room/stairwell 2, the slide room/stairwell 2 is communicated with the safety channel 3 through a fireproof door 5, working wells 6 are arranged at two sides of the tunnel, a fresh air well 7 leading to outdoor air is arranged in the working wells 6, a pressurizing fan 8 is arranged in the working wells 6, the pressurizing fan 8 takes air from the fresh air well 7, the pressurizing fan 8 is connected with a pressurizing air pipe 9, the pressurizing air pipe 9 is not provided with a pressurizing air supply port 10, the pressurizing air pipe 9 is connected with the safety channel 3, a bidirectional relay jet fan 11 is arranged in the safety channel 3 according to a certain distance, the bidirectional relay jet fan 11 is arranged avoiding the fireproof door 5, and a residual pressure valve 12 is arranged between the safety channel 3 and the slide room/stairwell 2. The technical scheme provided by the invention has the control thought that: when a fire disaster occurs at a certain place of the roadway 13, a person enters the slide room/stairwell 2 near the fire disaster point 14 and enters the safety channel 3 by opening the fireproof door 5, the tunnel fire alarming system gives an alarm to the FAS system, the FAS system gives an instruction, the pressurizing fan 8 in the working well 6 is opened to supply air to two sides of the safety channel 3, the fireproof door (opening) 501 is taken as a center, the two-way relay jet fans 11 in the range of 50 meters near the two sides are not opened, the two-way relay jet fans 11 in the range of 50-500 meters near the two sides are opened, and the air supply direction is from the working well 6 to the fireproof door (opening) 501, so that the fresh air at two ends is longitudinally conveyed to the fireproof door (opening) 501 near the fire disaster point 14 in a relay mode. The invention solves the problems of poor pressurizing and air supplying effect, poor middle evacuation safety and the like of the traditional safety channel setting mode, does not need to damage and influence the whole structure under the tunnel lane plate, has the advantages of good pressurizing and air supplying effect, safety and reliability, can effectively ensure the section wind speed when the fireproof door is opened, prevents the tunnel flue gas from entering the escape channel, provides a convenient channel for personnel evacuation, and improves the operation safety and the fireproof disaster resistance of long tunnels and extra-long tunnels.
As shown in fig. 3, another embodiment of the present invention provides a smoke evacuation method for an ultralong security channel of a longitudinal relay type tunnel, comprising the following steps:
s1: after the tunnel fire alarm system monitors that the roadway fires, the tunnel fire alarm system alarms to the FAS system, the FAS system sends out an instruction, and a pressurizing fan in the working well is started to send fresh air in the working well into the safety channel;
s2: the positive pressure value in the safety channel is maintained through the adjustment of the residual pressure valve, a bidirectional relay jet fan taking a fireproof door near a fire disaster point as a center within 50-500 meters is started to spray high-speed air flow, fresh air at two ends of the induction channel is conveyed to the fireproof door near the fire disaster point by the longitudinal relay of the tunnel by the working well, the section air speed of the fireproof door when the fireproof door is opened is ensured, and tunnel smoke is prevented from entering the safety channel;
s3: the trapped personnel enter the slide room/stairwell through the evacuation ports near the fire disaster point, enter the safety channel through the protective door and escape to the working wells at the two ends of the tunnel, thereby improving the safety and the fire prevention and disaster resistance of the long tunnel and the extra-long tunnel.
Further, in the step S2, the bidirectional relay jet fan is induced in a relay manner along the longitudinal direction of the tunnel from the working well to the middle direction, so that relay air supply to any position in the safety channel is realized.
Further, in the step S2, the bidirectional relay jet fan is turned off within 50 meters with the fireproof door near the fire disaster point as the center.
According to the invention, the safety channels are separated independently and are positioned between the slide ways/stairways and the rescue lanes, the safety channels are provided with fireproof doors between the slide ways/stairways and the rescue lanes, and when a fire disaster occurs, people enter the slide ways/stairways through the evacuation ports, enter the safety channels through the fireproof doors and are evacuated towards the two ends of the tunnel; when a fire disaster occurs, the pressurized air feeder in the working well sends fresh air into the safety channel, and the fresh air is regulated by the residual pressure valve to maintain the positive pressure value in the safety channel, so that the smoke is effectively prevented from spreading into the safety channel; the two sides of the safety channel are provided with the pressurizing air supply openings, meanwhile, the safety channel is internally provided with the two-way relay jet fans at intervals, and the two-way relay jet fans have the characteristics of obvious low noise, small volume, light weight, convenient hoisting and simple maintenance; the layout has the advantages of convenience in construction and simple structure, does not need to destroy the civil structure under the shield tunnel lane plate, can conveniently realize the transformation of the existing tunnel smoke prevention system, and is also suitable for the design and construction of a newly-built tunnel.
It will be readily appreciated by those skilled in the art that the foregoing description is merely a preferred embodiment of the invention and is not intended to limit the invention, but any modifications, equivalents, improvements or alternatives falling within the spirit and principles of the invention are intended to be included within the scope of the invention.
Claims (8)
1. The longitudinal relay type smoke-proof evacuation method for the ultra-long safety channel of the tunnel is characterized by comprising the following steps of:
s1: after the tunnel fire alarm system monitors that a roadway is in fire, the tunnel fire alarm system alarms to the FAS system, the FAS system sends out an instruction, and a pressurizing fan in a working well is started to send fresh air in the working well into a safety channel;
s2: the two sides of the safety channel are provided with pressurizing air supply openings, meanwhile, the inside of the safety channel is provided with two-way relay jet fans at intervals, the pressure is regulated by residual pressure valves, the positive pressure value in the safety channel is maintained, the two-way relay jet fans are not opened in the range of 50 meters near the two sides and spray high-speed air flow is opened by the two-way relay jet fans in the range of 50-500 meters, fresh air at two ends of the induction channel is longitudinally and in a relay mode from a working well to a fireproof door near the fire point along the tunnel, the air supply direction is from the working well to the fireproof door, so that the fresh air at two ends is longitudinally and in a relay mode to the fireproof door near the fire point, the section wind speed of the fireproof door when the fireproof door is opened is ensured, tunnel smoke is prevented from entering the safety channel, and the two-way relay jet fans are longitudinally and relay air supply to any position in the safety channel is realized;
s3: the trapped personnel enter the slide room/stairwell through the evacuation ports near the fire disaster point, enter the safety channel through the protective door and escape to the working wells at the two ends of the tunnel, thereby improving the safety and the fire prevention and disaster resistance of the long tunnel and the extra-long tunnel.
2. A smoke evacuation system for a longitudinally relayed type tunnel overlength safety passage, comprising:
the personnel evacuation escape unit comprises evacuation ports (1) arranged on two sides of a roadway (13), a slide room/stairwell (2) arranged on one side of the bottom of the roadway (13) and communicated with the evacuation ports (1), and a safety channel (3) arranged at intervals with the slide room/stairwell (2);
the positive pressure adjusting unit comprises a working well (6) arranged at two ends of a tunnel, a fresh air well (7) arranged at the top of the working well (6) and communicated with the outside, a pressurizing fan (8) arranged in the working well (6) and used for sending fresh air in the fresh air well (7) into a safety channel, and a residual pressure valve (12) arranged between the safety channel (3) and a slide room/stairwell (2) and used for adjusting the positive pressure in the safety channel (3);
and the long-distance relay air supply unit comprises at least one bidirectional relay jet fan (11) arranged in the safety channel (3), takes a fireproof door near a fire disaster point as a center, the bidirectional relay jet fans in the range of 50 meters at two sides are not opened, the bidirectional relay jet fans in the range of 50-500 meters are opened to spray high-speed air flow, fresh air at two ends of the induction channel is longitudinally relayed from a working well to a fireproof door near the fire disaster point along a tunnel, and the air supply direction is from the working well to the fireproof door, so that the fresh air at two ends is longitudinally relayed to the fireproof door near the fire disaster point, and the bidirectional relay jet fans are longitudinally relay-induced from the working well to the middle direction along the tunnel, thereby realizing relay air supply to any position in the safety channel.
3. A smoke evacuation system for overlength safety tunnel according to claim 2, wherein said two-way relay jet fans (11) are uniformly distributed in said safety tunnel (3) at a certain distance.
4. A longitudinal relay type tunnel overlength safety passage smoke evacuation system according to claim 3, wherein the safety passage (3) is communicated with the slide room/stairwell (2) through a fireproof door (5).
5. A longitudinal relay type tunnel overlength safety passage smoke evacuation system according to claim 4, wherein the bidirectional relay jet fan (11) is arranged avoiding the fireproof door (5).
6. A longitudinal relay tunnel overlength safety tunnel smoke evacuation system according to any of claims 2-5, wherein the positive pressure regulating unit comprises a pressurized air conduit (9) arranged in the working well (6) and communicating with the pressurized air blower (8).
7. A longitudinal relay type tunnel overlength safety passage smoke evacuation system according to claim 6, wherein said positive pressure regulating unit comprises a pressurizing air supply opening (10) provided at the end of said pressurizing air duct (9).
8. A smoke evacuation system for overlength safety tunnel in longitudinal relay type according to any one of claims 2-5, wherein the other side of the bottom of the roadway (13) is provided with other working spaces (4).
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| CN202110835926.2A CN113513353B (en) | 2021-07-23 | 2021-07-23 | Smoke-proof evacuation method and system for ultra-long safety channel of longitudinal relay type tunnel |
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| CN202110835926.2A CN113513353B (en) | 2021-07-23 | 2021-07-23 | Smoke-proof evacuation method and system for ultra-long safety channel of longitudinal relay type tunnel |
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| JP4360536B2 (en) * | 2003-04-04 | 2009-11-11 | 鹿島建設株式会社 | Fire / smoke-proof area forming equipment |
| CN208934699U (en) * | 2018-09-19 | 2019-06-04 | 交通运输部公路科学研究所 | A kind of broken-line type fire escape |
| CN210460731U (en) * | 2019-08-10 | 2020-05-05 | 中交国通智能科技有限公司 | Tunnel ventilation system |
| CN110454210A (en) * | 2019-08-22 | 2019-11-15 | 河南工业大学 | Subway is grown up admission section threaded list road smoke control system out |
| CN111810212A (en) * | 2020-06-01 | 2020-10-23 | 上海市政工程设计研究总院（集团）有限公司 | Long-distance ventilation section of comprehensive pipe gallery and ventilation method thereof |
| CN111749727A (en) * | 2020-06-15 | 2020-10-09 | 中铁第四勘察设计院集团有限公司 | Tunnel evacuation air supply method, personnel evacuation method and evacuation air supply structure |
| CN112664224A (en) * | 2020-12-31 | 2021-04-16 | 中铁第四勘察设计院集团有限公司 | Arrangement structure of evacuation channels under highway tunnel lane boards |
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| CN113513353A (en) | 2021-10-19 |
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