JP2000337099A - Tunnel ventilation control device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To significantly enhance safety in the event of fires in tunnels by preventing vehicles in a road tunnel having a branch tunnel and a combined tunnel and people escaping from the vehicles from being surrounded by smoke in the event of a fire, in a manner matching the place of occurrence of the fire. SOLUTION: When a fire occurs in either a main tunnel 2, a branch tunnel 7 or a combined tunnel 8, the operational contents of each of jet fans 4 disposed in the main tunnel 2 are changed in each block by a control device 15 in a manner matching the block where the fire has occurred, and wind is generated in the advancing direction of vehicles at a wind speed of about 2 m to prevent vehicles running in the main tunnel 2, the branch tunnel 7 and the combined tunnel 8, stopped vehicles and people escaping from the vehicles from being surrounded by smoke.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tunnel ventilation control device for ventilating a road tunnel having a diverging junction, and more particularly, to controlling a flow of smoke when a fire occurs in the road tunnel. The present invention relates to a tunnel ventilation control device for safely evacuating a driver of a stopped vehicle.

[0002]

2. Description of the Related Art Ordinary tunnels are constituted by a single tube, and traffic of a passing vehicle is limited to both exits. When a fire occurs in such a tunnel, it is necessary to control the wind speed in the tunnel so that passing vehicles (and people evacuating from the vehicles) are not caught in smoke.

FIG. 4 is a block diagram showing an example of a conventionally known tunnel ventilation system.

The tunnel ventilation system 101 shown in FIG.
Then, while measuring the wind speed and the wind direction in the tunnel 102 with an AV (wind direction anemometer) 103 provided in the tunnel 102, the measurement result of the AV 103 is compared with the target wind speed by the jet fan operating number calculation device 104. Based on the result of this comparison, the number of jet fans 105 installed in the tunnel 102 is controlled,
A wind having a wind speed set at the target wind speed is generated inside the tunnel 102 so that even if a fire occurs in the tunnel 102, the tunnel 102 is not filled with smoke.

In this case, when the tunnel 102 is a face-to-face tunnel, a fire occurrence point (called a fire point)
Since the vehicle exists from both sides toward the fire point, a method is adopted in which the target wind speed is set to zero and the diffusion of smoke is suppressed as much as possible. Also, when it is a one-way tunnel, make sure that vehicles heading to the fire point are not caught in the smoke.
A method is adopted in which the target wind speed is set to about 2 m and the wind flows in the traveling direction of the vehicle.

[0006]

However, recently,
In the metropolitan area, a tunnel (one-way tunnel) having a branching junction tunnel that enters and exits the ground in the middle of the tunnel is being adopted in order to effectively use the underground space. In such a tunnel, a new method of controlling the flow of wind in a direction that is safe for vehicles passing through the tunnel and those evacuating from the vehicle in consideration of the flow of smoke accompanying the fire is required.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a tunnel ventilation control device capable of dramatically improving safety when a fire occurs in a road tunnel having a branching junction tunnel.

[0008]

In order to achieve the above object, according to the present invention, when a fire occurs in a road tunnel having a branching junction tunnel, a fire occurs anywhere in the road tunnel. Fire position determining means for determining whether or not the smoke is generated by a fire based on the determination result of the fire position determining means and the wind direction and wind speed in the road tunnel, in the same direction as the moving direction of the vehicle in the tunnel. And ventilation control means for controlling the operation of each of the ventilation devices arranged in the road tunnel so as to move at a speed that does not pass the vehicle.

According to a second aspect of the present invention, in the tunnel ventilation control apparatus according to the first aspect, when the traffic congestion occurs near the fire occurrence location, the wind speed near the fire occurrence location becomes zero. As described above, the operation of each of the ventilation devices is controlled to prevent the diffusion of smoke caused by a fire.

According to a third aspect, in the tunnel ventilation control device according to any one of the first and second aspects, the ventilation control means is evacuated in the road tunnel by a plurality of human body detectors provided in the road tunnel. When a person is detected, a wind speed and a wind direction in the road tunnel are determined so that the refugee is not caught in smoke, and the respective ventilation devices are controlled based on the determination result.

According to the first aspect of the present invention, when a fire occurs in a road tunnel having a branching junction tunnel, each vehicle in the road tunnel and evacuation from each of these vehicles are determined according to the location of the fire. It prevents people from getting caught in the smoke, which greatly increases the safety in case of a tunnel fire.

According to a second aspect of the present invention, when a fire occurs in a road tunnel having a branching junction tunnel, it is determined whether or not congestion occurs near the fire location, and congestion occurs near the fire location. The wind speed near the place where the fire occurred, to prevent the smoke from spreading due to the fire, thereby preventing vehicles involved in traffic jams from being caught in the smoke Dramatically increase.

According to a third aspect of the present invention, when a fire occurs in a road tunnel having a branching junction tunnel and a person descends from a vehicle stopped in the road tunnel and evacuates, these persons are prevented from being caught in smoke. This greatly improves the safety in the event of a tunnel fire.

[0014]

DESCRIPTION OF THE PREFERRED EMBODIMENTS <Basic Principle of Embodiment> First,
Prior to the detailed description of the tunnel ventilation control device according to the present invention, the basic principle of tunnel ventilation control by the device of the present invention will be described.

The road tunnel 156 shown in FIG. 3 includes a branch tunnel 151 used when exiting from the ground, a merging tunnel 152 used when entering from the ground, and a main tunnel 153. A plurality of jet fans 154 are arranged at predetermined intervals, and a branch tunnel 151 downstream of the main tunnel 153 is provided.
Each of the central ventilation vents 155 is disposed, for example, and the jet fan 154 and each central ventilation vent 155 discharge contaminated air to the outside so that the contaminated air does not adversely affect the area around the tunnel entrance. The ventilation procedure will be described taking a case where a fire occurs in the road tunnel 156 as an example.

Main line tunnel 153, branch tunnel 15
1 and each length and shape of the merging tunnel 152 are different for each road tunnel 156. Main Line Tunnel 1
53, branch tunnel 151, and junction tunnel 152
If these wind directions and wind speeds are calculated for each location of the road tunnel 156 such as each wind direction and each wind speed, the control becomes complicated and the wind speed and wind direction cannot be controlled in real time. The main line tunnel 153, the branch tunnel 151, and the merging tunnel 152 are divided into a plurality of blocks in consideration of the wind speed and wind direction characteristics at the place, and the length and shape of the road tunnel 156 to be controlled.

At this time, as shown in FIG. 3, the wind flows in the direction of the thin arrow, and as shown by the thick arrow, if the vehicle is traveling in the main line tunnel 153 from the right side to the left side, As shown, the main line tunnel 153, the branch tunnel 151, and the merging tunnel 152 are connected to the first block 157.
a to the seventh block 157g.

<When the ventilation direction and the traveling direction are the same direction> Under such conditions, the first block 157a and the second
A fire occurred in a block such as the block 157b, the fourth block 157d, the fifth block 157e, and the sixth block 157f in which the ventilation direction (wind direction) before the fire was in the same direction as the traveling direction of the vehicle. In the case, for example, when a fire occurs in the first block 157a, when the number of operating jet fans 154 installed in the first block 157a is modified, it has a large effect on the wind speed at the fire point, and the branch tunnel 151 is interposed. Therefore, even if the number of operating jet fans 154 installed in the fourth block 157d adjacent to the first block 157a is corrected,
It is difficult to affect the wind speed at the fire point.
6 with the sixth block 157d adjacent to the fourth block 157d.
Jet fan 15 installed in block 157f
Even if the number of vehicles operated is changed, the wind speed at the fire point is hardly affected.

Further, when a fire occurs in the sixth block 157f, when the number of operating jet fans 154 installed in the sixth block 157f is modified, it greatly affects the wind speed at the fire point, Even if the number of operating jet fans 154 installed in the fourth block 157d adjacent to the sixth block 157f across the 152 is hardly affected by the wind speed at the fire point,
Further, even if the number of operating jet fans 154 installed in the first block 157a adjacent to the fourth block 157d with the branching tunnel 151 interposed therebetween is not affected, the wind speed at the fire point is hardly affected.

For the same reason, the second block 157
b, even when a fire occurs in the fourth block 157d and the fifth block 157e, the operation of each jet fan 154 installed in the first block 157a, the fourth block 157d, the sixth block 157f, and the seventh block 157g. Since the degree to which the modification of the number affects the wind speed at the fire point differs, the first and second blocks are installed in the first block 157a, the fourth block 157d, the sixth block 157f, and the seventh block 157g according to the block in which the fire has occurred. The operating number of each jet fan 154 must be adjusted.

When a fire occurs in the road tunnel 156, vehicles traveling toward the fire point among the vehicles passing through the road tunnel 156 stop sequentially from just before the fire point, A vehicle traveling in a direction away from the fire point travels as it is and escapes out of the road tunnel 156.

For this reason, the wind direction of the fire point (fire point) is set so that the vehicle stopped before the fire does not catch the smoke generated due to the fire and the smoke does not overtake the vehicle moving away from the fire. It is necessary to control the nearby wind to flow in any direction) and the wind speed (how fast the wind is to flow).

At this time, before the fire occurs, the road tunnel 156
If there is no traffic congestion within 2m
If the wind blows enough, vehicles stopped in front of the fire will not be caught in the smoke, and vehicles moving away from the fire will not be overtaken by the smoke, and the generated smoke will last for several minutes,
Since the air flows near the ceiling of the road tunnel 156, even if a person who evacuates from a vehicle stopped just before a fire appears, the evacuee can be prevented from being directly caught in smoke.

Further, if traffic congestion occurs in the road tunnel 156 before the fire occurs, the wind speed near the fire point is suppressed to zero or almost zero, so that the vehicles around the fire point and the evacuees smoke. It can be prevented from getting caught.

In the fifth block 157e assigned to the merging tunnel 152 from the ground to the main tunnel 153, the fifth block 157e has a downward slope.
If a fire occurs in the fifth block 157e, a fire may occur in the fifth block 157e in the same direction as the running direction of the vehicle because a smoke may go up a down slope and the vehicle may be caught in the smoke. Wind must flow (in the direction of merging) to prevent smoke from running up.

However, if the wind is flowed in this way, smoke flows from the merging tunnel 152 into the main tunnel 153, and a vehicle running in the main tunnel 153 may be caught in the smoke. Careful attention must be paid to wind speed and other factors.

<When the ventilation direction and the running direction are opposite directions> Also, under the above-described conditions, the third block 157c,
When a fire occurs in a block in which the ventilation direction before the fire is opposite to the running direction of the vehicle, such as the seventh block 157g, the wind direction (vehicle direction) is such that the vehicle heading to the fire point is not caught in smoke. And the wind speed (zero or almost zero wind speed).

<Conclusion> Therefore, in the tunnel ventilation control according to the present invention, the main line tunnel 153, the branch tunnel 151, and the junction tunnel 1 are controlled so as to satisfy the above-described conditions.
By controlling the number of operating each of the jet fans 154 provided in the main line 52, even if a fire occurs in any of the main tunnel 153, the branch tunnel 151, and the junction tunnel 152, the main tunnel 153, the branch tunnel 151,
Vehicles running in the merging tunnel 152, stopped vehicles, and evacuated people are prevented from being caught in the smoke.

<< Structure of First Embodiment >> FIG. 1 is a block diagram showing the structure of a tunnel ventilation system including a first embodiment of a tunnel ventilation control device according to the present invention.

The tunnel ventilation system 1a shown in FIG.
In the first block 3a, the fourth block 3d, the sixth block 3f, and the seventh block 3g in the main tunnel 2, respectively.
A plurality of jet fans 4 to be arranged, and the first block 3a, the fourth block 3d, the sixth block 3f, and the seventh
A plurality of fire detection devices 5 arranged in each of the blocks 3g
And the first block 3a, the fourth block 3d, the sixth block
A plurality of anemometers 6 arranged in each of the blocks 3f and 7g, and a plurality of fire detectors 5 arranged in each of the second block 3b and the third block 3c in the branch tunnel 7, A plurality of anemometers 6 arranged in the second block 3b and the third block 3c, a fire detection device 5 arranged in a fifth block 3e to be a merging tunnel 8, and an arrangement in the fifth block 3e. Anemometer 6 and the entrance, exit and branch tunnel 7 of the main tunnel 2
, And a plurality of traffic flow meters 9 arranged at the entrance of the merging tunnel 8.

Further, the tunnel ventilation system 1a includes a fire control starter 10 and a control target jet fan selector 1.
1, a wind speed target value / wind direction setting unit 12, a jet fan operating number calculation unit 13, a ventilator operation control unit 14, a measurement result of each traffic meter 9, a detection result of each fire detection device 5,
The number of operating jet fans 4 is controlled based on the measurement results of each wind direction anemometer 6, the preset wind speed target value and the wind direction, and the environment of the main line tunnel 2, the branch tunnel 7, and the merging tunnel 8 is improved. When a fire occurs in any one of the main tunnel 2, the branch tunnel 7, and the junction tunnel 8, the operation content of each jet fan 4 is switched to maintain the main tunnel 2, the branch tunnel 7, and the junction tunnel 8.
The vehicle is provided with a tunnel ventilation control control device 15 for preventing vehicles running, stopping vehicles, and evacuating people from being caught in smoke.

In the tunnel ventilation system 1a, the main line tunnel 2, the branch tunnel 7, the merge tunnel 8
When a fire has not occurred in any of the above locations, each jet fan is determined on the basis of the measurement results of each traffic flow meter 9, the measurement results of each wind direction anemometer 6, and the preset wind speed target value and wind direction. 4 to generate winds of the designated wind speed and direction in the main tunnel 2, the branch tunnel 7, and the merging tunnel 8, and keep the environment of the main tunnel 2, the branch tunnel 7, and the merging tunnel 8 in good condition. . In addition, main tunnel 2, branch tunnel 7, merging tunnel 8
When a fire occurs in any of the locations, the operation contents of each jet fan 4 arranged in the main tunnel 2 are switched according to the block in which the fire occurred, and the main tunnel 2, the branch tunnel 7, and the merging tunnel 8 are switched. Keep moving, parked, and evacuated people out of the smoke.

<< Operation of First Embodiment >> Next, a control procedure in the event of a fire in this embodiment will be described with reference to the block diagram shown in FIG.

First, the main line tunnel 2, the branch tunnel 7,
When a fire occurs in one of the merging tunnels 8 and the fire is detected by any of the fire detecting devices 5 provided in the main line tunnel 2, the branch tunnel 7, and the merging tunnel 8, and the fire detection information is output, a fire occurs. The time control unit 10 analyzes the content of the fire detection information, detects the number of the block in which the fire has occurred (block number), and based on the detection result, issues a command to stop the blower (or a command to reduce the operating air volume of the blower). ), A command to stop the exhaust fan provided in each centralized ventilator 16 (or a command to reduce the operating air volume of the exhaust fan) and a command to stop the jet fan 4 are supplied to the ventilator operation control unit 14, The operation of each ventilator, each exhaust unit, and each jet fan 4 is stopped, and the number (block number) of the block where the fire has occurred is indicated by the wind speed target value / wind direction setting unit 12. It is supplied to the control target fan selector 11.

The block number output from the fire control start-up unit 10 and the traffic congestion information (vehicle information) output from each traffic meter 9 provided in the main line tunnel 2, the branch tunnel 7, and the merging tunnel 8 The wind speed target value / wind direction setting unit 12 determines which direction the wind direction in the vicinity of the fire point should be directed, based on the traveling speed information). The wind speed target value, the wind direction, the wind speed target values of other blocks, and the wind direction are determined, and are supplied to the jet fan operating number calculation unit 13.

In parallel with this operation, when each of the jet fans 4 arranged in each block is operated by the control target fan selection unit 11 based on the block number output from the fire control activation unit 10, Alternatively, when the operation is stopped, it is estimated how the wind speed at the fire point changes, and a priority is given to each jet fan 4 for each block. Supplied.

The jet fan priority for each block output from the control target jet fan selection unit 11, the target wind speed value for each block output from the target wind speed / wind direction setting unit 12, the wind direction, the first Blocks 3a to 7
A vehicle running in the main line tunnel 2, the branch tunnel 7, and the merging tunnel 8 by the jet fan fan operating number calculation unit 13 based on each wind direction wind speed value output from each wind direction anemometer 6 provided in the block 3g, Vehicles at rest, wind directions where evacuees are not caught in smoke,
The first block 3a, the fourth block 3
d, a command value for the operating number of each jet fan 4 provided in the sixth block 3f and the seventh block 3g, and a normal rotation command (or a reverse rotation command) for each jet fan 4 are generated. Supplied to

At this time, if there is no traffic congestion in the road tunnel 18 before the fire occurs,
An operation number command value of the jet fan 4 and a normal rotation command (or a reverse rotation command) for each jet fan are generated so as to flow a wind of about 2 m, and are supplied to the ventilator operation control unit 14. Further, if traffic congestion occurs in the road tunnel 18 before the fire occurs, the operation number command value of the jet fan 4 and the correct value for each jet fan 4 are set so that the wind speed near the fire point is suppressed to zero or almost zero. A rotation command (or a reverse rotation command) is generated and supplied to the ventilator operation control unit 14.

Then, based on the command value of the number of operating jet fans 4 and the normal rotation command (or reverse rotation command) for each jet fan 4, the ventilator operation control unit 14 causes the main line tunnel 2, the branch tunnel 7, The operation of each of the jet fans 4 arranged in the merging tunnel 8 is controlled, and even if a fire occurs in the main tunnel 2, the branch tunnel 7, or the merging tunnel 8, the main tunnel 2,
A vehicle running in the branch tunnel 7, the junction tunnel 8,
Smoke generated at a fire location in the road tunnel 18 is discharged out of the road tunnel 18 so that stopped vehicles and evacuated people are not caught in the smoke.

<< Effects of First Embodiment >> As described above, in the first embodiment, when a fire occurs in any one of the main tunnel 2, the branch tunnel 7, and the junction tunnel 8, a fire occurs. According to the blocks, the operation contents of the jet fans 4 arranged in the main line tunnel 2 are switched for each block, and the vehicles running in the main line tunnel 2, the branch tunnel 7, the merging tunnel 8, and the stopped vehicles When a fire occurs in the road tunnel 18 having the branch tunnel 7 and the merging tunnel 8, since the evacuated people are prevented from being caught in the smoke, depending on the place where the fire occurs, the road tunnel 18 Vehicles, and those who evacuate from each of these vehicles, can be prevented from being caught in smoke, which can dramatically increase the safety in the event of a tunnel fire. Can.

In the first embodiment, when a fire occurs in the road tunnel 18 having the branch tunnel 7 and the merging tunnel 8, the place where the fire occurred, the structure of the road tunnel 18, and the traveling direction of the vehicle The smoke in the road tunnel 18 is discharged with the optimal ventilation direction and the optimal ventilation power according to the conditions, so that each vehicle in the road tunnel 18 and people evacuating from these vehicles are caught in the smoke. This can greatly increase the safety in the event of a tunnel fire.

Further, in the first embodiment, a road tunnel 18 having a branch tunnel 7 and a merging tunnel 8
When there is a fire inside the building, it is determined whether there is congestion near the fire place, and when there is congestion near the fire place, the wind speed near the fire place is reduced to almost zero. , So that smoke from the fire is not spread, so that even if there are vehicles in the traffic jam, each of these vehicles will not be caught in the smoke, greatly improving the safety in tunnel fires be able to.

<< Description of Second Embodiment >> FIG. 2 is a block diagram showing the configuration of a tunnel ventilation system including a second embodiment of the tunnel ventilation control device according to the present invention.
In this figure, the same parts as those in FIG. 1 are denoted by the same reference numerals.

The difference between the tunnel ventilation system 1b shown in this figure and the tunnel ventilation system 1a shown in FIG. 1 is that a traffic ventilation power calculation unit 17 is added and the tunnel ventilation system 1b is provided in the main line tunnel 2, the branch tunnel 7, and the junction tunnel 8. Based on the traffic volume output from each traffic measuring instrument 9, the traffic ventilation power such as the wind speed and direction of the wind generated by the vehicles passing through the main tunnel 2, the branch tunnel 7, and the merging tunnel 8 is estimated. Is supplied to the jet fan operating number calculation unit 13 to calculate the number of operating jet fans 4, the normal rotation command and the reverse rotation command for each jet fan 4,
That is, the calculation is performed in consideration of the traffic ventilation power.

By doing so, more accurate ventilation control can be performed even when the air in the road tunnel 18 is disturbed by a vehicle traveling in the main tunnel 2, the branch tunnel 7, and the merging tunnel 8. When a fire occurs in the road tunnel 18 having the branch tunnel 7 and the merging tunnel 8, vehicles in the road tunnel 18 and people evacuating from these vehicles are prevented from being caught in the smoke depending on the fire place. This can greatly enhance the safety in the event of a tunnel fire.

Also, in the second embodiment,
As in the first embodiment described above, the branch tunnel 7,
When a fire occurs in the road tunnel 18 having the merging tunnel 8, the location of the fire, the structure of the road tunnel 18, the optimal ventilation direction according to the traveling direction of the vehicle, and the optimal ventilation force in the road tunnel 18. Since the smoke is discharged, each vehicle in the road tunnel 18 and people evacuating from each of the vehicles can be prevented from being caught in the smoke, thereby increasing safety in a tunnel fire. Can be increased.

Further, in the second embodiment, similarly to the first embodiment, when a fire occurs in the road tunnel 18 having the branch tunnel 7 and the merging tunnel 8, a fire place It is determined whether or not there is congestion near the fire, and when congestion occurs near the fire location, the wind speed near the fire location is set to almost zero to prevent smoke from spreading due to the fire So
Even if there are vehicles involved in the traffic, these vehicles are prevented from being involved in the smoke, so that the safety in the event of a tunnel fire can be dramatically improved.

<< Description of Other Embodiments >> In the first and second embodiments, one branch tunnel 7 and one junction tunnel 8 are connected to one main line tunnel 2. The tunnel ventilation control device according to the present invention will be described with reference to a road tunnel 18 as an example, but a plurality of branch tunnels 7 and a plurality of branch tunnels may be provided for a road tunnel 18 of another embodiment, for example, one main tunnel 2. The tunnel ventilation control device according to the present invention may be applied to a road tunnel 18 to which the junction tunnel 8 is connected.

In such a road tunnel 18 as well, a fire occurs in any of the main tunnel 2, each branch tunnel 7, and each junction tunnel 8 constituting the road tunnel 18 in a procedure similar to the control procedure described above. Also, the smoke generated by the fire is discharged to the outside of the road tunnel 18, and the vehicles running on the main line tunnel 2, each branch tunnel 7, each merge tunnel 8, the stopped vehicles, and the evacuated people Can be prevented from getting caught in the smoke.

In the first and second embodiments described above, the jet fan 4 is arranged only in the main tunnel 2, but not only in the main tunnel 2, but also in the branch tunnel. 7. The jet fan 4 may be arranged in the merging tunnel 8.

In this way, the construction cost is slightly increased.
The smoke inside can be discharged more efficiently.

Further, the first embodiment described above, the second embodiment
In the embodiment of the present invention, the number of vehicles and the speed of the vehicles are measured by a plurality of traffic meters 9 arranged at the entrance, exit of the main line tunnel 2, exit of the branch tunnel 7, and entrance of the junction tunnel 8, respectively. On the basis of the measurement result, the speed of the vehicle traveling in the main tunnel 2, the branch tunnel 7, and the merging tunnel 8 is estimated.
A plurality of traffic measuring devices 9, a plurality of vehicle sensors, a plurality of visible camera devices, and the like are installed in the branch tunnel 7 and the merging tunnel 8, and the respective traffic measuring devices 9, each vehicle sensor, and each visible camera device are installed. By the main line tunnel 2,
The speed of the vehicle traveling in the branch tunnel 7 and the junction tunnel 8 may be directly measured.

Further, when a plurality of visible camera devices are installed in the main line tunnel 2, the branch tunnel 7, and the merging tunnel 8, a video signal obtained by each of these visible camera devices is subjected to image processing to generate a fire. The smoke flow at the time may be analyzed, or the monitor device may display images of the main tunnel 2, the branch tunnel 7, and the merging tunnel 8, and the operator may directly observe the image.

Further, the video signal output from each of the visible camera devices disposed in the main line tunnel 2, the branch tunnel 7, and the merging tunnel 8 is subjected to image analysis, and a vehicle stopped near a fire point or a vehicle set in advance. When there is a vehicle traveling at a certain speed or less, it is determined that congestion has occurred, and among the wind speed target values and wind directions for each block determined by the wind speed target value / wind direction setting unit 12, The wind speed target value of the block where the fire has occurred may be set to zero or almost zero, so that smoke is prevented from diffusing as much as possible.

The main tunnel 2, the branch tunnel 7,
In the confluence tunnel 8, a plurality of infrared sensors for detecting the presence of people are arranged. When each of these infrared sensors detects a person who got off the vehicle after the fire and started evacuation, these people smoke. The wind speed target value / wind direction setting unit 12 may be configured to determine the wind speed target value and the wind direction for each block so as not to get caught in the block (effect of claim 5).

In the first and second embodiments described above, the tunnel ventilation control device according to the present invention is described by taking the road tunnel 18 in which the vehicle travels in one direction as an example. The tunnel ventilation control device according to the present invention may be applied to a traveling road tunnel 18.

In such a road tunnel 18 as well, by controlling each jet fan 4 in accordance with the procedure described in the basic principle, the main tunnel 2, each branch tunnel 7, and each merge tunnel 8 constituting the road tunnel 18 are formed. No matter where the fire occurs, the smoke that accompanies the fire is discharged out of the road tunnel 18, and the vehicles traveling in the main tunnel 2, the branch tunnels 7, and the merging tunnels 8 are stopped. Vehicles and evacuated people can be kept out of smoke.

[0058]

As described above, according to the present invention, in the tunnel ventilation control device according to the first aspect, when a fire occurs in a road tunnel having a branching junction tunnel, the road tunnel is controlled according to the fire occurrence location. It is possible to prevent the vehicles inside the vehicle and those who evacuate from these vehicles from being caught in the smoke, thereby greatly improving the safety in the event of a tunnel fire.

According to the second aspect of the present invention, when a fire occurs in a road tunnel having a branching junction tunnel, it is determined whether or not there is congestion in the vicinity of the fire occurrence location. When traffic congestion occurs in the tunnel, the wind speed near the fire location is reduced to almost zero, so that smoke from the fire does not spread, thereby preventing vehicles involved in the traffic from getting caught in the tunnel. Fire safety can be dramatically improved.

In the tunnel ventilation control device according to the third aspect, when a fire occurs in a road tunnel having a branching junction tunnel and a person descends from a vehicle stopped in the road tunnel and evacuates, these persons smoke. In a tunnel, thereby greatly improving the safety in the event of a tunnel fire.

[Brief description of the drawings]

FIG. 1 is a block diagram showing an embodiment of a tunnel ventilation control device according to the present invention, which corresponds to claims 1, 3, and 4.

FIG. 2 is a block diagram showing an embodiment of the tunnel ventilation control device according to the present invention, which corresponds to claims 2, 3, and 4.

FIG. 3 is a schematic diagram for explaining a basic control operation of the tunnel ventilation control device according to the present invention.

FIG. 4 is a block diagram showing an example of a conventionally known tunnel ventilation control device.

[Explanation of symbols]

1a, 1b: Tunnel ventilation system 2: Main line tunnel 3a: First block 3b: Second block 3c: Third block 3d: Fourth block 3e: Fifth block 3f: Sixth block 3g: Seventh block 4: Jet fan (Ventilation device) 5: Fire detection device 6: Wind direction and anemometer 7: Branch tunnel 8: Confluence tunnel 9: Traffic flow meter 10: Fire control starter 11: Control target jet fan selector 12: Wind speed target value / wind direction Setting unit 13: Jet fan operating number calculation unit 14: Ventilation machine operation control unit 15: Tunnel ventilation control device (fire position determination means, ventilation control means) 16: Centralized ventilation 17: Traffic ventilation power calculation unit 18: Road tunnel

Claims (3)

[Claims] When a fire occurs in a road tunnel having a branching junction tunnel, a fire position determining means for determining where in the road tunnel the fire has occurred, and a determination result of the fire position determining means, Each ventilation arranged in the road tunnel such that smoke generated by a fire based on the wind direction and wind speed in the road tunnel moves in the same direction as the moving direction of the vehicle in the tunnel and at a speed not to overtake the vehicle. A ventilation control device, comprising: ventilation control means for controlling the operation of the device. 2. The tunnel ventilation control device according to claim 1, wherein the ventilation control means is configured such that, when congestion occurs near the fire occurrence location, the wind speed near the fire occurrence location becomes zero. A tunnel ventilation control device, which controls the operation of each ventilation device to prevent the spread of smoke due to a fire. 3. The tunnel ventilation control device according to claim 1, wherein the ventilation control unit detects an evacuated person in the road tunnel by a plurality of human body detectors provided in the road tunnel. When determined, determines the wind speed and direction in the road tunnel so that the refugee is not involved in the smoke, and controls each of the ventilation devices based on the determination result. .