Tunnel water curtain spraying intelligent control system and control method

Abstract

The invention relates to the field of tunnel fire prevention and control, and particularly discloses a tunnel water curtain spraying intelligent control system and a control method, the tunnel water curtain spraying intelligent control system is used for a smoke control zone in a tunnel, the tunnel water curtain spraying intelligent control system comprises a water curtain generating device used for generating water curtains on the two sides of the smoke control zone, and the water curtain generating device comprises a spraying pipe and a driving device; the driving device is arranged at one end of the spraying pipe, and the spraying pipe can rotate under the action of the driving device; the system further comprises a point type smoke exhaust system, a fire detection alarm and a temperature detection sensor. The controller is electrically connected with a driving device of the water curtain generating device and the temperature detection sensor, and the controller adjusts the water curtain spraying angle of the spraying pipe based on the temperature information. The smoke temperature is monitored in real time through the temperature detection sensor on the smoke outlet, accurate fire source positioning information is provided for water curtain spraying, and by monitoring the smoke temperature in real time, the system can quickly respond to fire changes, adjust the spraying strategy in time and optimize the fire extinguishing and smoke control effect.

Description

Technical Field

[0001] The present application belongs to the technical field of tunnel fire prevention and control, and specifically relates to an intelligent control system and control method for tunnel water curtain spraying. Background Art

[0002] Road and highway tunnels play an indispensable role in modern urban transportation systems. They not only effectively conserve urban space and alleviate traffic pressure, but also significantly shorten intercity distances, greatly improving transportation efficiency and convenience. With the acceleration of urbanization and the growth of transportation demands, tunnel safety has gradually become a focus of public attention. Among the many safety measures, water curtain systems, as a key technology, are widely used in the prevention and control of tunnel fires. By installing water sprinklers inside the tunnel, once a fire occurs, the system automatically activates, spraying water mist to form a water curtain, effectively isolating the spread of smoke and flames, and providing a safe escape environment for personnel.

[0003] However, existing water curtain technology primarily uses fixed nozzles to spray water mist. While this design can isolate smoke and flames to a certain extent, it lacks specificity and flexibility. This limitation highlights the shortcomings of existing water curtain systems in fire response, especially when precise control of firefighting direction and intensity is required. Because the nozzles of traditional water curtain systems are fixed, the coverage and direction of the water mist they spray are preset and immutable. This fixed design does indeed isolate smoke and flames to a certain extent, but it lacks the ability to adapt to actual fire scenarios. Summary of the Invention

[0004] In response to the above-mentioned defects or improvements required in the existing technical solutions, the purpose of the present invention is to provide an intelligent control system and control method for tunnel water curtain spraying, which can automatically adjust the spray angle and intensity according to changes in the fire situation. The intelligent water curtain system can more accurately extinguish the fire source, thereby greatly improving the emergency response capability and safety level of tunnel fires.

[0005] To achieve the above-mentioned objectives, the technical solution of the present invention is as follows: a tunnel water curtain spray intelligent control system, which is used for multiple smoke control zones in the tunnel, including a water curtain generating device for generating water curtains on both sides of the smoke control zone, the water curtain generating device including a spray pipe and a driving device, the driving device is arranged at one end of the spray pipe, and under the action of the driving device, the spray pipe can be rotated; a point smoke exhaust system including a smoke exhaust port, a smoke exhaust duct, a mechanical smoke exhaust equipment, and a smoke exhaust air booth, the smoke exhaust duct is arranged at the top or side space of the tunnel, and each smoke control zone includes multiple smoke exhaust ports; a fire detection alarm for detecting the occurrence of fire in the smoke control zone in the tunnel; a temperature detection sensor, which is arranged on each of the smoke exhaust ports, for detecting the temperature of the smoke at the smoke exhaust port; a controller, which is electrically connected to the driving device and the temperature detection sensor of the water curtain generating device, and the controller adjusts the water curtain spray angle of the spray pipe based on the temperature information.

[0006] Preferably, the smoke exhaust port is arranged between the smoke exhaust duct and the tunnel vehicle space, and smoke exhaust air booths are provided on the ground at both ends of the tunnel. The smoke exhaust air booths are connected to the smoke exhaust duct through mechanical smoke exhaust equipment, and a valve switch is provided at the smoke exhaust port.

[0007] Preferably, the driving device includes a motor, a driving gear and a driven gear, the driving gear is connected to the output shaft of the motor, and the driven gear is sleeved and fixed on the outer circumference of the spray pipe.

[0008] Preferably, the water curtain generating device further comprises a water supply pipe, and the spray pipe and the water supply pipe are dynamically sealed connected.

[0009] Preferably, a plurality of water curtain electrically controlled nozzles are evenly arranged on the spray pipe.

[0010] Preferably, the controller pre-stores a plurality of rotation angles of the spray pipe, and the plurality of rotation angles respectively correspond to the angles at which the water curtain is sprayed directly below each smoke exhaust port.

[0011] The present invention also discloses a control method based on the above-mentioned tunnel water curtain spray intelligent control system, comprising the following steps:

[0012] S1: When the fire detection alarm detects a fire in a smoke-controlled area in the tunnel, the water curtain generators on both sides of the smoke-controlled area where the fire is located are activated, and the point-type smoke exhaust system is activated. The point-type smoke exhaust system activates the smoke exhaust ports and mechanical smoke exhaust equipment within the smoke-controlled area. The smoke in the smoke-controlled area enters the smoke exhaust duct through the smoke exhaust ports and is discharged through the smoke exhaust air booth by the mechanical smoke exhaust equipment.

[0013] S2, the controller obtains the temperature information detected by the temperature detection sensor of each smoke exhaust port and compares them;

[0014] S3, obtaining the position of the smoke exhaust outlet where the temperature detection sensor with the highest measured temperature is located, and calling the rotation angle of the sprinkler pipe corresponding to the position directly below the smoke exhaust outlet pre-stored in the controller;

[0015] S4, the controller controls the driving device to start, and controls the rotation of the spray pipe according to the obtained rotation angle.

[0016] Preferably, the controller can also control the water volume of the spray pipe. In step S4, when the spray pipe rotates to a predetermined position, the water volume of the spray pipe is increased.

[0017] Preferably, the method further includes step S5 of activating the water curtain of the adjacent smoke control zone.

[0018] Preferably, in step S5, the water curtains of adjacent smoke control zones are sprayed in a vertical direction.

[0019] The beneficial effects of the present invention are as follows:

[0020] (1) By intelligently controlling the sprinkler pipes and enabling their rotation, the water curtain can adjust its spray angle according to the real-time changes in the fire location. This flexibility allows the water curtain to be more accurately aimed at the fire source, effectively improving fire extinguishing efficiency while reducing water waste.

[0021] (2) The temperature detection sensor installed on the smoke exhaust port is used to monitor the smoke temperature in real time, providing accurate fire source location information for water curtain spraying. By monitoring the smoke temperature in real time, the system can quickly respond to changes in the fire, adjust the spraying strategy in a timely manner, and optimize the fire extinguishing and smoke control effects. According to the severity of the fire and the location of the sprinkler pipe, the water volume of the sprinkler pipe is intelligently controlled, ensuring sufficient fire extinguishing effect while avoiding additional safety risks and resource waste caused by excessive water volume.

[0022] (3) By coordinating with the point-type smoke exhaust system and opening the smoke exhaust ports and mechanical smoke exhaust equipment within the smoke control zone, the smoke exhaust efficiency is effectively improved, the smoke retention time in the tunnel is reduced, and the impact of smoke on personnel escape and fire rescue is reduced. By activating the water curtain in the adjacent smoke control zone and spraying in a vertical direction, the coverage of fire extinguishing and smoke control is further expanded, and the fire isolation capacity of the entire tunnel is enhanced.

[0023] In summary, this invention integrates multiple technologies, including fire detection and alarm, temperature monitoring, intelligent water curtain adjustment, and point-based smoke exhaust, to form a comprehensive fire emergency response mechanism, significantly improving the tunnel's self-protection capabilities and personnel safety in the event of a fire. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic diagram of an intelligent control system for tunnel water curtain spraying according to an embodiment of the present invention;

[0025] Figure 2 This is a schematic diagram of another spray angle of the tunnel water curtain spray intelligent control system shown in an embodiment of the present invention;

[0026] Figure 3 This is a schematic diagram of the installation of a spray pipe and a drive device according to an embodiment of the present invention;

[0027] Figure 4 This is a schematic diagram of the installation of a spray pipe and a drive device according to an embodiment of the present invention;

[0028] Figure 5 This is a control flow chart of the tunnel water curtain spray intelligent control system shown in an embodiment of the present invention.

[0029] Explanation of the accompanying symbols: 1-spray pipe, 2-driving device, 21-motor, 22-driving gear, 23-driven gear, 3-point smoke exhaust system, 301-smoke exhaust port, 302-smoke exhaust duct, 303-mechanical smoke exhaust equipment, 304-smoke exhaust air booth, 4-fire detection alarm, 5-temperature detection sensor, 6-water supply pipe. DETAILED DESCRIPTION

[0030] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field belong to the present invention.

[0031] 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 so as to provide a full understanding of the embodiments of the present application. However, it will be appreciated by those skilled in the art 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, implementations or operations are not shown or described in detail to avoid blurring the various aspects of the application.

[0032] See also Figure 1-2 This embodiment provides a tunnel water curtain spray intelligent control system, which is used for multiple smoke control zones in the tunnel. The smoke control zones are evenly distributed in the tunnel. The system includes a water curtain generating device for generating water curtains on both sides of the smoke control zones. When a fire occurs, the water curtain is used to isolate the fire source and control the spread of smoke, thereby providing a safe escape environment and facilitating fire control.

[0033] See also Figure 3-4The water curtain generating device includes a sprinkler pipe 1 and a driving device 2. The driving device 2 is arranged at one end of the sprinkler pipe 1. This design enables the sprinkler pipe 1 to rotate under the action of the driving device 2, so as to flexibly adjust the spray direction of the water curtain according to the location of the fire source and the distribution of smoke, thereby improving the accuracy and efficiency of fire extinguishing and smoke control.

[0034] See also Figure 1-2 The point-type smoke exhaust system 3 includes 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 located at the top or side space of the tunnel. Each smoke control zone includes multiple smoke exhaust ports 301. The setting of this system is intended to efficiently remove smoke generated by fire, reduce the impact of smoke on personnel escape and fire control, ensure the cleanliness of the air in the tunnel, and improve the safety of personnel escape. By arranging the smoke exhaust port 301 between the smoke exhaust duct 302 and the tunnel vehicle space, and setting up smoke exhaust air booths 304 on the ground at both ends of the tunnel, the mechanical smoke exhaust device 303 is used to effectively guide the smoke from the vehicle space to the outside, thereby achieving the purpose of rapid smoke exhaust. The valve switch at the smoke exhaust port 301 can adjust the smoke exhaust demand according to the fire situation and flexibly control the amount of smoke discharged.

[0035] Fire detection alarms 4 are used to detect fires within smoke-controlled areas within the tunnel. This allows for early detection of fires, prompt activation of the water curtain sprinkler system and point-type smoke exhaust system 3, rapid response to fires, and minimization of fire damage. Temperature sensors 55 are installed at each smoke exhaust port 301 to detect the temperature of the smoke at that location. Real-time smoke temperature monitoring accurately determines the location and intensity of the fire source, providing a basis for intelligent adjustment of the water curtain spray angle, resulting in more precise and effective fire extinguishing and smoke control.

[0036] The controller is electrically connected to the driving device 2 of the water curtain generating device and the temperature detection sensor 55. The controller adjusts the water curtain spray angle of the sprinkler pipe 1 based on the temperature information. The core purpose of this intelligent control mechanism is to achieve precise control of the spray angle of the sprinkler pipe 1, and adjust the direction and range of the water curtain spray according to the real-time changes in the fire situation, so as to maximize the fire extinguishing and smoke isolation effect of the water curtain, while ensuring that the safe evacuation passage in the tunnel is unobstructed.

[0037] See also Figure 3-4In some embodiments, the drive device 2 includes a motor 21, a driving gear 21, and a driven gear 22. The driving gear 21 is connected to the output shaft of the motor 21, and the driven gear 22 is sleeved and fixed to the outer circumference of the sprinkler pipe 1. This design allows the motor 21 to drive the sprinkler pipe 1 to rotate through the cooperation of the driving gear 21 and the driven gear 22. The purpose is to achieve precise positioning and flexible control of the sprinkler pipe 1, so as to adjust the spray direction of the water curtain according to the fire situation, improve fire extinguishing efficiency and smoke control accuracy. The motor 21 can be a stepper motor.

[0038] The water curtain generator also includes a water supply pipe 6, which is dynamically sealed to the sprinkler pipe 1. This connection ensures a stable supply of water under high pressure while maintaining a tight seal during the rotation of the sprinkler pipe 1, preventing water leakage and ensuring the continuity and effectiveness of the water curtain. Multiple electronically controlled water curtain nozzles are evenly distributed on the sprinkler pipe 1. These uniformly arranged nozzles enable uniform control of the water curtain's coverage, ensuring that the water curtain reaches the key areas of the fire source and smoke diffusion, effectively isolating the smoke and reducing the fire temperature.

[0039] Furthermore, the controller pre-stores multiple rotation angles for the sprinkler pipe 1, each corresponding to the angle at which the water curtain sprays directly below each smoke exhaust port 301. This configuration enables the controller to quickly adjust the rotation angle of the sprinkler pipe 1 to the optimal position based on the real-time fire situation and smoke distribution, thereby specifically controlling the fire source and smoke, improving the efficiency of fire extinguishing and smoke control, and minimizing the impact on normal traffic in the tunnel.

[0040] See Figure 5 Another embodiment of the present invention provides a control method for the above-mentioned tunnel water curtain spray intelligent control system, comprising the following steps:

[0041] S1: When the fire detection alarm 4 detects a fire in a smoke-controlled zone within the tunnel, it activates the water curtain generators on both sides of the smoke-controlled zone where the fire is located, and activates the point-type smoke exhaust system 3. The point-type smoke exhaust system 3 activates the smoke exhaust port 301 and the mechanical smoke exhaust device 303 within the smoke-controlled zone. The smoke in the smoke-controlled zone enters the smoke exhaust duct 302 through the smoke exhaust port 301 and is exhausted by the mechanical smoke exhaust device 303 through the smoke exhaust air booth 304.

[0042] The above steps are to respond quickly at the early stage of a fire. Through the combined action of the water curtain and the point-type smoke exhaust system 3, the fire source is effectively isolated and the spread of smoke is controlled. At the same time, the smoke is quickly exhausted, reducing the impact of the fire on the internal environment of the tunnel and the escape of personnel.

[0043] S2, the controller obtains the temperature information detected by the temperature detection sensor 5 of each smoke exhaust port 301 and compares them;

[0044] The above steps determine the approximate range of the fire source location and the intensity of the fire by real-time monitoring and analyzing the temperature information at multiple smoke exhaust ports 301 of the smoke control zone where the fire occurs, providing data support for subsequent precise water spraying.

[0045] S3, obtaining the position of the smoke exhaust port 301 where the temperature detection sensor 5 with the highest measured temperature is located, and calling the rotation angle of the spray pipe 1 corresponding to the position directly below the smoke exhaust port 301 pre-stored in the controller;

[0046] The above steps determine the most likely location of the fire source by identifying the location of the highest temperature point, and then adjust the direction of the water curtain sprinkler pipe 1 to aim at the fire source. This can improve fire extinguishing efficiency and control fire and smoke more specifically.

[0047] S4, the controller controls the driving device 2 to start, and controls the rotation of the spray pipe 1 according to the obtained rotation angle.

[0048] The above steps accurately adjust the angle of the sprinkler pipe 1 through the intelligent control system to ensure that the water curtain can cover the fire source area as much as possible, effectively control the fire, and at the same time reduce interference with other areas in the tunnel, ensuring the normal use of the tunnel and the safe evacuation of personnel.

[0049] In order to adapt to possible changes in the fire situation, in step S2, the temperature information is re-detected every 10 minutes. If it is found in these regular detections that the smoke exhaust port 301 corresponding to the highest temperature information has changed, that is, the location of the fire source has moved or the fire intensity has changed in different areas, the control system will readjust the angle of the sprinkler pipe 1 to ensure that the water curtain spray is always aimed at the current area with the strongest fire source. The purpose of setting up this dynamic adjustment mechanism is to ensure that as the fire situation develops, the water curtain sprinkler device can continue to effectively target the areas that most need fire extinguishing and smoke control, thereby achieving more efficient fire control and smoke isolation effects. In this way, the present invention can flexibly respond to changes in the fire situation and further improve the accuracy and effectiveness of fire response in the tunnel.

[0050] Furthermore, the controller can also control the water flow in sprinkler pipe 1. In step S4, after sprinkler pipe 1 rotates to a predetermined position, the water flow in sprinkler pipe 1 is increased. This step is designed to enhance the fire extinguishing and smoke control effects by increasing the amount of water sprayed after sprinkler pipe 1 is aligned with the fire source. Increasing the water flow can more effectively cover the fire source area, speeding up the fire extinguishing process, while also helping to more quickly reduce the temperature around the fire source and slowing the spread of smoke. This adjustment ensures that the water curtain provides sufficient water at critical moments to cope with the intensity of the fire and optimize fire extinguishing efficiency.

[0051] Furthermore, step S5 is also included after step S4 to start the water curtain of the adjacent smoke control partition. In this step, the water curtain of the adjacent smoke control partition is sprayed in the vertical direction. The purpose of this is to further expand the protection range on the basis that the water curtain in the area near the fire source has been started, and to form a larger protection network by starting the water curtain in the adjacent smoke control partition. The vertical spraying helps to form a three-dimensional water curtain barrier, which can not only control the fire and smoke in the current fire source area, but also prevent the fire from spreading to adjacent areas, thereby protecting the internal structure of the tunnel and ensuring the safety of personnel in a wider range. In this way, the present invention achieves all-round control of tunnel fires and enhances the comprehensiveness and effectiveness of tunnel fire response measures.

[0052] In the present invention, although the water curtain spray angle is designed to be aimed at the bottom of each smoke exhaust port 301 in order to achieve precise control of the fire source position, in actual applications, due to the limitation of the spray distance or other actual operational factors, the water curtain may not fall on the target position completely accurately. However, this deviation does not affect the implementation of the invention. The core purpose of the present invention is to achieve effective isolation and control of smoke by intelligently controlling the water curtain spray angle to get as close to the fire source position as possible, thereby reducing the visual obstruction and hazards caused by the fire. Even if the water curtain does not reach the bottom of the smoke exhaust port 301 completely accurately, as long as the sprayed water can be directed toward the fire source position and significantly close, it is sufficient to have a positive effect on controlling the diffusion of smoke near the fire source. Such a design takes into account the flexibility and adaptability in actual operation, ensuring that the system can effectively perform its smoke control function under various actual conditions.

[0053] In summary, the present invention proposes an intelligent control system for tunnel water curtain sprinklers and a control method thereof, aiming to improve the fire extinguishing efficiency and smoke control capabilities during tunnel fires. By intelligently controlling the rotation angle and water volume of the sprinkler pipe, combined with the effective smoke emission of the point-type smoke exhaust system, the present invention can be targeted at the location of the fire source, achieving rapid and effective control of fire and smoke. The implementation of the present invention can significantly improve the safety and response speed during tunnel fires, and realizes rapid positioning and precise extinguishing of fires through intelligent control, while optimizing smoke emissions and providing a safer escape environment for people in the tunnel. The design of the system takes into account the flexibility and adaptability of actual operations, ensuring that its functions can be effectively exerted under various actual conditions. It is an important technological advancement in tunnel fire safety management.

[0054] The above figures are merely illustrative of the processes included in the methods according to exemplary embodiments of the present application and are not intended to be limiting. It is readily understood that the processes illustrated in the above figures do not indicate or limit the temporal order of these processes. Furthermore, it is readily understood that these processes may be executed synchronously or asynchronously, for example, in multiple modules.

[0055] It should be understood that the present application is not limited to the exact structures that have been described above and shown in the drawings, and that various modifications and changes can be performed without departing from the scope thereof. The scope of the present application is limited only by the appended claims.

Claims

1. A tunnel water curtain spraying intelligent control system, which is used for multiple smoke control zones in the tunnel, characterized in that: The invention comprises a water curtain generating device for generating water curtains on both sides of the smoke control partition, the water curtain generating device comprising a spray pipe (1) and a driving device (2), the driving device (2) being arranged at one end of the spray pipe (1), and the spray pipe being rotated under the action of the driving device (2); a point-type smoke exhaust system (3), comprising 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) being arranged at the top or side space of the tunnel, and each smoke control partition comprising a plurality of smoke exhaust ports (301); a fire detection alarm (4), for detecting the occurrence of a fire in the smoke control partition in the tunnel; and a temperature detection sensor (5), which is arranged on each of the smoke exhaust ports and is used to detect the temperature of the smoke at the smoke exhaust port; The controller is electrically connected to the driving device (2) and the temperature detection sensor (5) of the water curtain generating device, and the controller adjusts the water curtain spraying angle of the spray pipe (1) based on the temperature information.

2. The tunnel water curtain spray intelligent control system according to claim 1 is characterized by: The smoke exhaust port (301) is arranged between the smoke exhaust duct (302) and the tunnel vehicle space. Smoke exhaust air booths (304) are provided on the ground at both ends of the tunnel. The smoke exhaust air booths (304) are connected to the smoke exhaust duct (302) via mechanical smoke exhaust equipment (303). A valve switch is provided at the smoke exhaust port (301).

3. The intelligent control system for tunnel water curtain spraying according to claim 1 is characterized in that: The driving device (2) comprises a motor (21), a driving gear (22), and a driven gear (23); the driving gear (22) is connected to the output shaft of the motor (21); and the driven gear (23) is sleeved and fixed on the outer circumference of the spray pipe (1).

4. The intelligent control system for tunnel water curtain spraying according to claim 3 is characterized by: The water curtain generating device further comprises a water supply pipe (6), and the spray pipe (1) and the water supply pipe (6) are dynamically sealed.

5. The intelligent control system for tunnel water curtain spraying according to claim 4 is characterized in that: A plurality of water curtain electrically controlled nozzles are evenly arranged on the spray pipe (1).

6. The intelligent control system for tunnel water curtain spraying according to claim 1, characterized in that: The controller pre-stores a plurality of rotation angles of the spray pipe (1), the plurality of rotation angles respectively corresponding to the angles at which the water curtain is sprayed directly below each smoke exhaust port (301).

7. A control method for the tunnel water curtain spray intelligent control system according to any one of claims 1 to 6, characterized in that: The following steps are involved: S1, when the fire detection alarm (4) detects a fire in a certain smoke control zone in the tunnel, the water curtain generating devices on both sides of the smoke control zone where the fire source is located are turned on, and the point smoke exhaust system (3) is turned on. The point smoke exhaust system (3) turns on the smoke exhaust port (301) and the mechanical smoke exhaust equipment (303) within the range of the smoke control zone. The smoke in the smoke control zone enters the smoke exhaust duct (302) through the smoke exhaust port (301) and is discharged through the smoke exhaust air booth (304) by the mechanical smoke exhaust equipment (303); S2, the controller obtains the temperature information detected by the temperature detection sensor (5) of each smoke exhaust port and compares them; S3, obtaining the position of the smoke exhaust port (301) where the temperature detection sensor (5) with the highest measured temperature is located, and calling the rotation angle of the spray pipe (1) corresponding to the position directly below the smoke exhaust port pre-stored in the controller; S4, the controller controls the driving device to start, and controls the rotation of the spray pipe (1) according to the obtained rotation angle.

8. The control method according to claim 7, characterized in that: The controller can also control the water volume of the spray pipe (1). In step S4, when the spray pipe (1) rotates to a predetermined position, the water volume of the spray pipe (1) is increased.

9. The control method according to claim 8, characterized in that: The process also includes step S5, activating the water curtain of the adjacent smoke control zone.

10. The control method according to claim 9, characterized in that: In step S5, the water curtains of adjacent smoke control zones are sprayed in a vertical direction.

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