Gas-water curtain partition point type smoke exhaust and control system and method

Abstract

The invention relates to a gas-water curtain partition type point type smoke exhaust and control system and method, and belongs to the field of tunnel fire prevention and control, the gas-water curtain partition type point type smoke exhaust and control system comprises a tunnel, a smoke control partition, a point type smoke exhaust system, a gas curtain generation system, a water curtain generation system and a fire detection alarm, the gas curtain generation system comprises a gas curtain generation tail end, and the water curtain generation system comprises a water curtain generation tail end. The tunnel is divided into a plurality of smoke control subareas by the air curtain generation tail end and / or the water curtain generation tail end. The point type smoke exhaust system is arranged, the smoke exhaust port, the smoke exhaust flue, the mechanical smoke exhaust equipment and other devices are arranged, the key smoke exhaust effect is achieved for the smoke control partition, the space at the top end and the space on the two sides of the tunnel are fully utilized, and compared with an existing conventional longitudinal smoke exhaust mode and a conventional transverse smoke exhaust mode, arrangement of a large number of fans is avoided, cost is reduced, and energy conservation and emission reduction are achieved. And the smoke exhaust efficiency is high.

Description

Technical Field

[0001] The present application belongs to the field of safety science and technology and tunnel disaster prevention and mitigation technology, and specifically relates to an air-water curtain partition type point-type smoke exhaust and control system and method. Background Art

[0002] With the breakthrough in the manufacturing of shield machines, my country's ultra-long underwater transportation tunnels have entered a construction boom. Fire is the biggest threat to the safety of underwater transportation tunnel operations. 80% of casualties in accidents are caused by smoke control failures. Therefore, smoke control technology has become the key to ensuring tunnel operation safety.

[0003] The main idea of ​​existing tunnel smoke control technology is still around the word "exhaust", that is, to transport smoke from the fire scene to the outside. The relevant research and engineering applications at home and abroad are mainly divided into two categories: longitudinal smoke exhaust, which is a displacement ventilation method, forming a longitudinal airflow in the tunnel, blowing all the fire smoke downstream, which is suitable for one-way traffic tunnels with smooth road conditions; focused smoke exhaust, adopting the principle of nearest exhaust, setting up a special smoke exhaust duct in the tunnel and evenly arranging the smoke exhaust ports, only opening the smoke exhaust ports near the fire point, and exhausting the smoke nearby through the smoke exhaust duct, which is suitable for tunnels with long lengths and frequent blockages. For ultra-long underwater traffic tunnels, the above two types of technologies have certain limitations: when longitudinal smoke exhaust is adopted, once the tunnel is blocked by traffic, the fire will spread longitudinally, causing greater casualties; when focused smoke exhaust is adopted, the civil construction cost of the civil smoke duct is high and it is easy to leak air, which is prone to long-distance smoke leakage and large smoke leakage, resulting in the failure of the smoke exhaust system. In addition, in the early stage of the fire, the smoke is easily affected by the residual piston wind in the tunnel, and the smoke is easy to spread downstream of the fire source.

[0004] Whether it is the longitudinal smoke exhaust technology or the key smoke exhaust technology, there is a process of transporting smoke out of the fire scene and transporting it to the outside, which cannot fundamentally solve the problems of rapid smoke spread, great harm of residual smoke in the fire scene, difficulty in controlling super-long smoke exhaust, and easy failure of smoke exhaust. Therefore, new smoke control methods should be further proposed for super-long underwater tunnels to solve the above problems. Summary of the invention

[0005] In response to the above defects or improvements required in the prior art solutions, the present invention provides an air-water curtain partition type tunnel smoke control method and system, which is a new tunnel smoke control method that can temporarily divide the tunnel into multiple smoke control sections and process fire smoke on-site without affecting normal driving functions.

[0006] Schematic diagram of the air-water curtain partition type point-type smoke exhaust and control system of the present invention, including a tunnel, a smoke control zone, a point-type smoke exhaust system, an air curtain generating system, a water curtain generating system, and a fire detection alarm. The tunnel is divided into multiple smoke control zones by the air curtain generating system and / or the water curtain generating system. An air curtain generating system or a water curtain generating system is separately arranged at the junction of different smoke control zones in the tunnel, or a combination of an air curtain generating system and a water curtain generating system can also be arranged. The smoke is controlled inside the smoke control zone through the air curtain generating system and / or the water curtain generating system, so as to carry out the smoke exhaust operation.

[0007] The air curtain generating system pipe network is mainly composed of an air delivery pipeline and an air curtain generating end. The air delivery pipeline is arranged longitudinally along the tunnel to provide air source for the air curtain generating end. The air curtain generating end can spray to form an air curtain covering the cross-section of the tunnel. The air delivery pipeline is composed of a main pipeline arranged longitudinally along the tunnel and branch pipelines separately connected to each air curtain generating end. A control valve is arranged at the inlet connection of each air curtain generating end. The controller adjusts the opening of the control valve to regulate the opening of the air curtain generating system and the air supply volume of the air curtain generating system.

[0008] The water curtain generating system pipe network is mainly composed of a water supply pipeline and a water curtain generating end. The water curtain generating end can spray to form a water curtain covering the cross-section of the tunnel. The water supply pipeline is composed of a main water supply pipeline distributed longitudinally along the tunnel and branch pipelines connected to each water curtain generating end. The water curtain generating end can be arranged at the top of the tunnel. By applying pressure on the main water supply pipeline, water is ejected from the water curtain generating end. Due to the water pressure and gravity, the ejected water flow can cover the cross-section of the tunnel.

[0009] Furthermore, the air curtain generating ends and the water curtain generating ends are arranged in parallel at intervals at the boundary of the smoke control zone. The layout scheme of the air curtain generating ends and the water curtain generating ends can be flexibly adjusted according to the specific project.

[0010] Preferably, the air curtain generating ends and the water curtain generating ends are arranged alternately at the boundary. The air curtain generating ends can better isolate the smoke from flowing upstream and downstream, forming a relatively sealed space, while the water curtain generating ends can reduce the temperature of the smoke and adsorb particulate matter, CO, CO2, SO2, and other harmful substances in the smoke.

[0011] The point-type smoke exhaust system consists of smoke exhaust outlets, smoke exhaust ducts, mechanical smoke exhaust equipment, and smoke exhaust air shafts. The smoke exhaust ducts are arranged at the top or side of the tunnel, serving as dedicated channels for the flow of smoke. Smoke exhaust outlets are provided between the smoke exhaust ducts and the vehicle driving space of the tunnel. Smoke exhaust air shafts are set on the ground at both ends of the tunnel. The smoke exhaust air shafts are connected to the smoke exhaust ducts through mechanical smoke exhaust equipment. Valve switches are installed at the smoke exhaust outlets to control the opening and closing of the smoke exhaust outlets. Jet fans can be selected as the mechanical smoke exhaust equipment. Preferably, multiple smoke exhaust air shafts can be set according to the length of the tunnel, and multiple smoke exhaust air shafts can be selected on the ground relatively close to the tunnel top. Multiple smoke exhaust outlets and multiple fire detectors are provided within each smoke control zone, and the fire detectors are installed on the tunnel wall.

[0012] An FAS system for fire alarm and fire control is also installed in the tunnel. The FAS system is connected to the fire detectors and is used to receive the alarm signals from the detectors and control components such as the air curtain generating ends, water curtain generating ends, and point-type smoke exhaust systems in the tunnel according to the alarm signals.

[0013] When a fire occurs in the tunnel, the air-water curtain partition type point-type smoke exhaust and smoke control method and system provided by the present invention can work according to the following steps:

[0014] S1: When a fire occurs in the tunnel, the fire detectors can transmit signals to the FAS system;

[0015] S2: The FAS system determines the location of the fire source and issues instructions to turn on the air curtain generating ends and / or water curtain generating ends on both sides of the smoke control zone where the fire source is located, and turn on the point-type smoke exhaust system. An air curtain and / or water curtain can be formed at the two side boundaries of the smoke control zone. At this time, the smoke generated by the fire source can be isolated within the smoke control zone. At the same time, the point-type smoke exhaust system will turn on the smoke exhaust outlets and mechanical smoke exhaust equipment within the smoke control zone. The smoke in the smoke control zone enters the smoke exhaust duct through the smoke exhaust outlets and is discharged to the outside through the smoke exhaust air shafts by the mechanical smoke exhaust equipment, thus completely blocking the smoke spread path.

[0016] S3: The vehicles downstream of the smoke control zone where the fire source is located continue to drive and escape through the tunnel exit; the vehicles upstream of the smoke control zone where the fire source is located stop by the roadside, and the personnel escape through the existing evacuation openings in the tunnel; the trapped personnel in the smoke control zone where the fire source is located cross the air curtain and water curtain and enter the adjacent safe smoke control zone and escape through the existing evacuation openings in the tunnel.

[0017] In order to improve the smoke control effect of the fire, the present invention divides the tunnel into multiple smoke control zones and isolates different smoke control zones through air curtains and water curtains, so that the smoke generated by the fire is isolated inside the smoke control zone, thereby reducing the harm to other personnel upstream and downstream of the tunnel.

[0018] In traditional key-point smoke exhaust in tunnels, physical methods such as flexible rolling curtains are generally used for isolation. Although it can also achieve the effect of isolating smoke, it is necessary to ensure that all personnel at the fire occurrence point have safely escaped before the rolling curtain can be lowered. At this time, the smoke may have spread, so the effect of isolating smoke is not good. The present invention adopts an alternating arrangement of air curtains and water curtains, taking into account both the isolation of smoke and the functions of cooling the smoke and removing harmful components. Compared with the smoke control methods that solely use air curtains or water curtains, the smoke control effect of the present invention is better. When adopting the air-water curtain smoke isolation method, once a fire is detected, the air curtain and water curtain can be immediately activated, without delaying time and without affecting the safe escape of personnel, and the effect is significantly better than the smoke isolation method of rolling curtains. The present invention also sets up a point-type smoke exhaust system. By setting devices such as smoke exhaust outlets, smoke exhaust ducts, and mechanical smoke exhaust equipment, it achieves key-point smoke exhaust effects for smoke control zones, and makes full use of the space at the top and both sides of the tunnel. Compared with the existing conventional longitudinal smoke exhaust and transverse smoke exhaust methods, it avoids a large number of fans being arranged, reduces costs, and has a high smoke exhaust efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 Schematic diagram of the air-water curtain partition type point-type smoke exhaust and smoke control system shown in the embodiment of the present invention;

[0020] Figure 2 Cross-sectional view of the air curtain shown in the embodiment of the present invention;

[0021] Figure 3 Cross-sectional view of the water curtain shown in the embodiment of the present invention;

[0022] Figure 4 Cross-sectional view of the smoke exhaust outlet shown in the embodiment of the present invention;

[0023] Figure 5 Working principle diagram of the air-water curtain partition type point-type smoke exhaust and smoke control under fire conditions.

[0024] Description of the reference numerals in the drawings: 1 - tunnel, 2 - smoke control zone, 3 - point-type smoke exhaust system, 4 - air curtain generation system, 5 - water curtain generation system, 6 - fire detection and alarm, 7 - air curtain, 8 - water curtain, 301 - smoke exhaust outlet, 302 - smoke exhaust duct, 303 - mechanical smoke exhaust equipment, 304 - smoke exhaust air pavilion, 401 - gas pipeline, 402 - air curtain generation end, 501 - water supply pipeline, 502 - water curtain generation end. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0025] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art belong to the present invention.

[0026] In addition, described feature, structure or characteristic can be combined in one or more embodiments in any suitable manner. In the following description, many specific details are provided to provide a full understanding of the embodiments of the present application. However, those skilled in the art will appreciate that the technical scheme of the present application can be put into practice without one or more of the specific details, or other methods, components, devices, steps, etc. can be adopted. In other cases, known methods, devices, realizations or operations are not shown or described in detail to avoid blurring the various aspects of the application.

[0027] Figure 1 It is a schematic diagram of the air-water curtain partition type point-type smoke exhaust and control system of the present invention, including a tunnel 1, a smoke control partition 2, a point-type smoke exhaust system 3, an air curtain generating system 4 and a water curtain generating system 5 and a fire detection alarm 6. The tunnel 1 is divided into a plurality of smoke control partitions 2 by the air curtain generating system 4 and / or the water curtain generating system 5. An air curtain generating system 4 or a water curtain generating system 5 is separately provided at the junction of different smoke control partitions 2 of the tunnel 1, and a combination of an air curtain generating system 4 and a water curtain generating system 5 can also be provided, and the smoke is controlled inside the smoke control partition 2 by the air curtain generating system and / or the water curtain generating system, thereby performing a smoke exhaust operation.

[0028] Figure 2 It is a cross-sectional view of the air curtain. The pipeline network of the air curtain generating system 4 is mainly composed of a gas transmission pipeline 401 and an air curtain generating terminal 402. The gas transmission pipeline 401 is arranged along the longitudinal direction of the tunnel 1 to provide a gas source for the air curtain generating terminal 402. The air curtain generating terminal 402 can spray to form an air curtain 7 covering the cross-section of the tunnel 1. The gas transmission pipeline is composed of a main pipeline arranged along the longitudinal direction of the tunnel and a branch pipeline separately connected to each air curtain generating terminal. A control valve is set at the inlet connection of each air curtain generating terminal. The controller adjusts the opening of the air curtain generating system and the air supply volume of the air curtain generating system by controlling the valve opening.

[0029] Detect the pressure at various locations of the tunnel cross section and ensure that the flow rate at various locations of the cross section is greater than V0. When the tunnel 1 is a two-lane tunnel, the air curtain generating terminal 402 can be set only at the top of the tunnel. When the tunnel 1 is a two-lane tunnel or at the intersection of lanes, the air curtain generating terminal 402 can be set at the top and side walls of the tunnel, and the air curtain generating terminal 402 can be arranged on the driving ground. A groove for accommodating the air curtain generating terminal 402 is set on the driving ground, and a retractable surface is set. Under normal circumstances, the retractable surface can cover the groove and ensure the normal passage of the tunnel 1. When a fire occurs, the retractable surface is opened, and the air curtain generating terminal 402 on the driving ground can also spray gas and produce an air curtain effect.

[0030] Figure 3It is a cross-sectional view of the water curtain generating system. The pipe network of the water curtain generating system 5 mainly consists of a water supply pipeline 501 and a water curtain generating end 502. The water curtain generating end 502 can spray to form a water curtain 8 covering the cross-section of the tunnel 1. The water supply pipeline 501 is composed of a main water supply pipeline longitudinally distributed along the tunnel and branch pipelines connected to each water curtain generating end 502. The water curtain generating end can be arranged at the top of the tunnel. By applying pressure to the main water supply pipeline, water is ejected from the water curtain generating end. Due to the water pressure and gravity, the ejected water flow can cover the cross-section of the tunnel 1.

[0031] Furthermore, at the boundary of the smoke control zone 2, the air curtain generating end 402 and the water curtain generating end 502 are arranged in parallel intervals. The layout scheme of the air curtain generating end 402 and the water curtain generating end 502 can be flexibly adjusted according to the specific project.

[0032] Preferably, multiple air curtain generating ends 402 and water curtain generating ends 502 are alternately arranged at the boundary. The air curtain generating end can better isolate the flow of smoke upstream and downstream, forming a relatively sealed space. The water curtain generating end can reduce the temperature of the smoke and adsorb particulate matter, CO, CO2, SO2 and other harmful substances in the smoke. By alternately arranging the air curtain generating end 402 and the water curtain generating end 502, compared with a single air curtain or water curtain, the isolation and cooling effects of the present invention are better, facilitating the further treatment of the fire and avoiding the harm of the fire to the personnel in the tunnel.

[0033] In an embodiment, two water curtain generating ends 502 and one air curtain generating end 402 are alternately arranged at the junction of the smoke control zone 2. Among them, the two water curtain generating ends 502 are arranged on the outside, and one air curtain generating end 402 is in the middle of the two water curtain generating ends 502, forming a water curtain-air curtain-water curtain structure. The inner water curtain 8 can isolate part of the smoke. And due to the relatively high temperature of the smoke, through the heat exchange between the smoke and the water curtain, the temperature of the smoke is reduced. At the same time, the water curtain can adsorb some gases such as CO, CO2, and SO2 in the smoke. The air curtain 7 can better isolate the smoke due to the denser air jet. The outer water curtain 8 further serves to reduce the temperature of the smoke and prevent the leakage of the smoke to the outside.

[0034] In another embodiment, two air curtain generating ends 402 and one water curtain generating end 502 are alternately arranged at the junction of the smoke control zone 2. The two air curtain generating ends 402 are arranged on the outer side, and one water curtain generating end 502 is arranged in the middle of the two air curtain generating ends 402, forming an air curtain - water curtain - air curtain structure. When a fire occurs, the inner air curtain 7 can better isolate the smoke, preventing the high-temperature smoke and harmful gases from spreading to the upstream and downstream. The water curtain 8 can adsorb the particulate matter, CO2, SO2 and other harmful substances in the smoke, and the outer air curtain further isolates the smoke, so as to prevent the smoke particles and harmful gases from spreading to other parts of the tunnel.

[0035] Figure 4-5 The specific structure of the point-type smoke exhaust system 3 is disclosed. The point-type smoke exhaust system 3 is composed of a smoke exhaust port 301, a smoke exhaust duct 302, a mechanical smoke exhaust device 303 and a smoke exhaust air shaft 304. The smoke exhaust duct 302 is arranged in the top or side space of the tunnel 1 and is a dedicated channel for the flow of smoke. A smoke exhaust port 301 is arranged between the smoke exhaust duct 302 and the vehicle driving space of the tunnel 1. Smoke exhaust air shafts 304 are arranged on the ground at both ends of the tunnel 1. The smoke exhaust air shafts 304 are connected to the smoke exhaust duct 302 through the mechanical smoke exhaust device 303. A valve switch is arranged at the smoke exhaust port 301 to control the opening and closing of the smoke exhaust port 301. The mechanical smoke exhaust device 303 can be a jet fan. Preferably, multiple smoke exhaust air shafts 304 can be arranged according to the length of the tunnel 1, and multiple smoke exhaust air shafts 304 can be selected on the ground relatively close to the top of the tunnel.

[0036] A plurality of smoke exhaust ports 301 and a plurality of fire detection alarms 6 are arranged within each smoke control zone 2. The fire detection alarms 6 are arranged on the tunnel 1 wall surface.

[0037] An FAS system for fire alarm and fire control is also arranged in the tunnel 1. The FAS system is connected to the fire detection alarms 6 and is used to receive the alarm signals from the detection alarms 6 and control components such as the air curtain generating end 402, the water curtain generating end 502 and the point-type smoke exhaust system 3 in the tunnel 1 according to the alarm signals.

[0038] When a fire occurs in the tunnel, the air-water curtain partition type point-type smoke exhaust and smoke control method and system provided by the present invention can work according to the following steps:

[0039] S1: When a fire occurs in the tunnel 1, the fire detection alarm 6 can transmit the signal to the FAS system;

[0040] S2: The FAS system determines the location of the fire source and issues commands to turn on the air curtain generating ends 402 and / or the water curtain generating ends 502 on both sides of the smoke control zone 2 where the fire source is located, and turn on the point-type smoke exhaust system 3. An air curtain 7 and / or a water curtain 8 can be formed at the two side boundaries of the smoke control zone 2. At this time, the smoke generated by the fire source can be isolated within the smoke control zone 2. At the same time, the point-type smoke exhaust system 3 will turn on the smoke exhaust openings 301 and the mechanical smoke exhaust equipment 303 within the scope of the smoke control zone 2. The smoke in the smoke control zone 2 enters the smoke exhaust duct 302 through the smoke exhaust openings 301 and is discharged to the outside by the mechanical smoke exhaust equipment 303 through the smoke exhaust air pavilion 304, thereby completely blocking the smoke spread path.

[0041] S3: The vehicles downstream of the smoke control zone 2 where the fire source is located continue to drive and escape through the tunnel exit; the vehicles upstream of the smoke control zone 2 where the fire source is located pull over to the side of the road, and the personnel escape through the existing evacuation openings in the tunnel; the trapped personnel in the smoke control zone where the fire source is located cross the air curtain 7 and the water curtain 8 and enter the adjacent safe smoke control zone 2 and escape through the existing evacuation openings in the tunnel.

[0042] The present invention sets up smoke control zones, controls the smoke within the smoke control zones through the isolation effects of the air curtain and the water curtain, and quickly discharges the smoke in the smoke control zone 2 to the outside of the tunnel through the smoke exhaust openings 301 of the point-type smoke exhaust system 3 and the mechanical smoke exhaust equipment 303, thereby completely blocking the smoke spread path and avoiding the harm of the smoke in the tunnel to the personnel upstream and downstream.

[0043] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; under the idea of the present invention, the technical features in the above embodiments or different embodiments can also be combined, and the steps can be implemented in any order, and there are many other changes in different aspects of the present invention as described above. For the sake of brevity, they are not provided in detail; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. An air-water curtain partition type point-type smoke exhaust and control system, characterized in that: The invention comprises a tunnel (1), a smoke control partition (2), a point-type smoke exhaust system (3), an air curtain generation system (4), a water curtain generation system (5) and a fire detection alarm (6); the air curtain generation system (4) comprises an air curtain generation terminal (402); the water curtain generation system comprises a water curtain generation terminal (502); and the tunnel (1) is divided into a plurality of smoke control partitions (2) by the air curtain generation terminal (402) and / or the water curtain generation terminal (502).

2. The air-water curtain partition type point-type smoke exhaust and control system according to claim 1 is characterized in that: The air curtain generating end (402) and the water curtain generating end (502) are alternately arranged at the junction of different smoke control zones (2), and the air curtain generating end (402) and the water curtain generating end (502) are arranged in parallel.

3. The air-water curtain partition type point-type smoke exhaust and control system according to claim 2 is characterized in that: The air curtain generating system (4) further comprises an air supply pipeline (401), which is arranged longitudinally along the tunnel (1) and provides an air source for an air curtain generating terminal (402). The air curtain generating terminal (402) can spray to form an air curtain (7) covering the cross section of the tunnel (1).

4. The air-water curtain partition type point-type smoke exhaust and control system according to claim 3 is characterized in that: A control valve is provided at the inlet of the air curtain generating end (402), and the opening of the control valve can be adjusted to adjust the air supply volume of the air curtain generating end (402).

5. The air-water curtain partition type point-type smoke exhaust and control system according to claim 2 is characterized in that: The pipe network of the water curtain generation system (5) also includes a water supply pipeline (501), and the water curtain generation terminal (502) can spray to form a water curtain (8) covering the cross section of the tunnel (1).

6. The air-water curtain partition type point-type smoke exhaust and control system according to claim 5 is characterized in that: Two water curtain generating ends (502) and one air curtain generating end (402) are alternately arranged at the junction of the smoke control partition (2), wherein the two water curtain generating ends (502) are arranged on the outside, and the air curtain generating end (402) is arranged between the two water curtain generating ends (502), forming a water curtain-air curtain-water curtain structure.

7. The air-water curtain partition type point-type smoke exhaust and control system according to claim 5 is characterized in that: Two air curtain generating ends (402) and one water curtain generating end (502) are alternately arranged at the junction of the smoke control partition (2), wherein the two air curtain generating ends (402) are arranged on the outside, and the water curtain generating end (502) is arranged between the two air curtain generating ends (402), forming an air curtain-water curtain-air curtain structure.

8. The air-water curtain partition type point-type smoke exhaust and control system according to any one of claims 1 to 7, characterized in that: The point-type smoke exhaust system (3) comprises a smoke exhaust port (301), a smoke exhaust duct (302), a mechanical smoke exhaust device (303), and a smoke exhaust air booth (304); the smoke exhaust duct (302) is arranged at the top or side space of the tunnel (1).

9. The air-water curtain partition type point-type smoke exhaust and control system according to claim 8 is characterized in that: The smoke exhaust port (301) is arranged between the smoke exhaust duct (302) and the vehicle space of the tunnel (1). Smoke exhaust air booths (304) are arranged on the ground at both ends of the tunnel (1). The smoke exhaust air booths (304) are connected to the smoke exhaust duct (302) through mechanical smoke exhaust equipment (303). A valve switch is arranged at the smoke exhaust port (301).

10. A tunnel smoke control method applied to the air-water curtain partition type point-type smoke exhaust and control system according to any one of claims 3 to 9, characterized in that: The tunnel (1) includes a FAS system for fire alarm and fire control. The FAS system is connected to the fire detection alarm (6) and is used to receive an alarm signal from the fire detection alarm (6). When a fire occurs in a tunnel, proceed as follows: S1: When a fire occurs in the tunnel (1), the fire detection alarm (6) transmits a signal to the FAS system; S2: The FAS system determines the location of the fire source and issues a command to respectively open the air curtain generating terminals (402) and / or water curtain generating terminals (502) on both sides of the smoke control partition (2) where the fire source is located, and to open the point-type smoke exhaust system (3). The point-type smoke exhaust system (3) opens the smoke exhaust port (301) and the mechanical smoke exhaust equipment (303) within the range of the smoke control partition (2). The smoke in the smoke control partition (2) enters the smoke exhaust duct (302) through the smoke exhaust port (301) and is exhausted to the outside through the smoke exhaust air booth (304) by the mechanical smoke exhaust equipment (303); S3: Vehicles downstream of the smoke control zone (2) where the fire source is located continue to drive and escape through the tunnel exit; vehicles upstream of the smoke control zone (2) where the fire source is located stop at the roadside, and people escape through the existing evacuation exits in the tunnel; people trapped in the smoke control zone where the fire source is located pass through the air curtain (7) and water curtain (8) to enter the adjacent safe smoke control zone (2), and escape through the existing evacuation exits in the tunnel.

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