JP2007275607A - Tunnel disaster prevention system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a tunnel disaster prevention system which carries out the zoning of the fire outbreak zone, restrains the diffusion of high-temperature gas, smoke, etc., and can assure an efficient smoke eliminating operation and operation during a fire. <P>SOLUTION: The tunnel disaster prevention system has a fire outbreak sensing means 4 laid along the longitudinal direction of a tunnel, a water screening device 5 which forms a water curtain and carries out the zoning of the tunnel for each predetermined spacing, a water spray facility 6 installed for each zoning space, a ventilating apparatus of semi-transverse ventilation which consists of an exhaust duct 9 along the longitudinal direction of the tunnel and ventilates in the direction of crossing the tunnel, and a ventilating apparatus 3 of a longitudinal ventilation which supplies air in the longitudinal direction. The zoning of the fire outbreak zone A detected by the fire outbreak sensing means 4 is carried out by the water screening device 5, automatic water sprinkling is carried out by the water spray facility 6, air is supplied by the ventilating apparatus 3 of the longitudinal ventilation, and the smoke is compulsorily eliminated by exhausting the tunnel through the exhaust duct 9 by the ventilating apparatus of transverse ventilation. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a tunnel for responding to a fire that includes a fire accident of a traveling vehicle such as a train or a car that has occurred inside a tunnel such as a railway tunnel, a road tunnel, or a tunnel (hereinafter simply referred to as a tunnel). It is about disaster prevention system in.

  In tunnels, the space in contact with the outside air is very limited, so there is a problem that disasters such as evacuation, relief, and firefighting are greatly restricted in the event of a fire inside the tunnel. In addition, in the event of a fire, the air and structures around the source are easily heated and destroyed, and high-temperature combustion gases and smoke are likely to diffuse in the tunnel extension direction (longitudinal direction). have.

On the other hand, in the tunnel, if it is limited to the ventilation of the space in the tunnel in an emergency, there are many ventilation systems such as a vertical flow ventilation method, a cross flow ventilation method, a semi-cross flow ventilation method, and other ventilation methods (including combined ventilation methods). Has been proposed, so that the combustion gas and smoke in the event of a fire can be exhausted (smoke) quickly. In addition, water spray equipment for watering is provided for cooling the tunnel housing, and fire extinguishing of the fire source, suppression of combustion, cooling of the structure wall, and the like are performed.
Road tunnels are ranked according to the length of the tunnel and traffic volume, and the obligation to install emergency equipment is specified.

An example of such an emergency facility is shown in FIG.
In FIG. 8, 50 is a main line of the tunnel, and an evacuation space 52 is provided in the space under the floor slab 51. The evacuation space 52 and the main line 50 are provided at a plurality of locations at predetermined intervals along the longitudinal direction of the tunnel. It is communicated through an evacuation communication path 53 such as a slope and a staircase. The main line 50 of the tunnel is configured to be ventilated by a longitudinal ventilation type ventilation device 54, and water spray equipment 55 is installed at predetermined intervals along the longitudinal direction of the main line 50. In addition, pressurized air can be supplied to the evacuation space 52 as needed in an emergency.

  In the event of a fire, the evacuees evacuate from the vehicle and evacuate to the evacuation space 52 from the nearby evacuation communication path 53. Thereafter, water is automatically sprinkled from the water spray equipment 55 to cool the structure wall, and pressurized air is supplied to the evacuation space 52 to secure the evacuation space 52. Then, a self-propelled rescue vehicle enters from the evacuation space 52, transports the refugee to a safe fixed point, and further, a fire brigade enters the main line 50 from the evacuation communication path 53 so that fire fighting activities can be performed.

  In addition, as shown in Patent Document 1 below, a nozzle that forms a jet water flow toward the outside of the tunnel is installed at both ends of the tunnel so as to cover the entire cross section of the tunnel, and at the center line of the ceiling inside the tunnel. A nozzle that ejects a water film in a bell shape along with it is proposed to block the hot air flow, smoke, and combustion gas in a zone and to extinguish the fire, thereby preventing the spread of fire spread.

  Furthermore, in the following Patent Document 2, the space in the tunnel is zoned (partitioned) along the length direction, and at the boundary part of each zone, it falls to the space in the tunnel when a fire breaks out. By providing a non-combustible wall member that cuts off and forms a space partitioned from other zones, it is possible to prevent the expansion of fire and high temperature areas and the diffusion of smoke, and contain them in a limited space Things have been proposed.

However, in the above-described conventional technology, diffusion of high-temperature combustion gas, air, and smoke cannot be sufficiently suppressed. In addition, since the air was supplied together with the smoke, the combustion continued, and the combustion gas temperature and smoke temperature became high (100 ° C for tunnel cooling equipment, about 280 ° C for building equipment) and adjacent to the fire zone. In some cases, the temperature of the combustion gas and the flue gas leaked into the zone could not be lowered, and the flue gas could not be continued.
For this reason, it is necessary to secure an emergency evacuation route, to ensure the area of disaster prevention activities such as relief activities and firefighting activities, or to ensure efficient smoke removal operation and operation of the equipment during the fire period, intensive watering. There was much room for improvement in terms of suppressing combustion, promoting fire extinguishing, and cooling the structure wall.

Japanese Unexamined Patent Publication No. 57-153671 JP-A-9-271526

The present invention has been made in order to cope with the above-described situation, and the first problem is that the fire occurrence zone can be zoned to reliably suppress the diffusion of high-temperature gas, smoke, and the like. It is an object of the present invention to provide a tunnel disaster prevention system that can ensure efficient smoke exhaust operation and operation of smoke exhaust equipment throughout the fire period.
Another object of the present invention is to provide a tunnel disaster prevention system that can zone the fire occurrence zone and spray water in a concentrated manner to promote fire extinguishing and suppress combustion, and effectively cool the surrounding air temperature and structure wall. Is to provide.

A further object of the present invention is to provide a tunnel disaster prevention system that can reliably secure an evacuation route (evacuation space) for evacuees such as passengers of traveling vehicles that have caused a fire accident to evacuate to a safe area. There is to do.
Another subject of this invention is providing the disaster prevention system in a tunnel which can ensure easily the area | region where a fire brigade performs disaster prevention activities, such as relief activity and fire fighting activity.

  In order to solve the above-described problem, a first tunnel disaster prevention system is constructed along a longitudinal direction of a tunnel, a fire occurrence detection unit that is laid along the longitudinal direction of the tunnel and detects the occurrence of a fire in the tunnel. A water screen device that is installed at a predetermined interval and forms a water curtain in a direction crossing the tunnel to zone the space in the tunnel at a predetermined interval, and is installed for each space zoned by the water screen device. A water spray facility, a vertical flow ventilation device for exhausting the inside of the tunnel in the longitudinal direction of the tunnel, and an evacuation space defined with respect to an evacuation path disposed in the tunnel main line, The water screen device detects the fire occurrence zone detected by the fire occurrence detection means and the zone adjacent to the fire occurrence zone by the water screen device. Water is automatically sprayed to the fire occurrence zone by the water spray facility, and pressurized air is supplied to the evacuation route to supply the adjacent zone of the main tunnel through the evacuation route. It is characterized in that the inside of the tunnel is exhausted by the longitudinal flow ventilation device and forcibly exhausted.

  According to the above configuration, when the fire occurrence detection means detects that a fire has occurred in the tunnel, if the evacuation control is successful after waiting for the evacuees to evacuate, the water screen device is activated along with the detection, and the tunnel is A water curtain is formed in the transverse direction, the fire occurrence zone is divided from other zones and zoned, and combustion gas, smoke and the like are contained in the zone, and diffusion thereof can be suppressed. Next, water spraying equipment can automatically spray water in a concentrated manner to the fire occurrence zone to promote fire extinguishing, suppress combustion, cool the structure wall, and lower the temperature of the combustion gas and smoke. After that, the inside of the tunnel is forcibly ventilated and exhausted by a ventilator, so that the fire brigade can enter and carry out disaster prevention activities such as fire fighting activities and relief activities.

  Furthermore, since the evacuation space partitioned from the main tunnel as described above is provided and pressurized air is supplied to the evacuation space, air is supplied from the evacuation space side to the main tunnel side. In addition to demonstrating the disaster prevention function, an evacuation route for refugees to evacuate to a safe area can be ensured.

A second tunnel disaster prevention system according to claim 1 of the present invention includes a fire occurrence detection means that is laid along the longitudinal direction of the tunnel and detects the occurrence of a fire in the tunnel, and the longitudinal direction of the tunnel. Installed at predetermined intervals along the water screen device for forming a water curtain in a direction crossing the tunnel and zoning the space in the tunnel at predetermined intervals, and for each space zoned by the water screen device A water spray facility, an exhaust duct laid along the longitudinal direction of the tunnel, and a semi-cross-flow ventilation device that ventilates in a direction across the tunnel, and a longitudinal air supply to the tunnel And a vertical flow ventilation type ventilation device, and a fire occurrence zone detected by the fire occurrence detection means is defined by the water screen device. In addition, the water spraying facility automatically sprays water to the fire occurrence zone, and the tunnel is supplied with air by the longitudinal ventilation type ventilation device, and the exhaust duct is supplied by the cross flow ventilation type ventilation device. The tunnel is evacuated through a forcible smoke to be exhausted.
According to the above configuration, when the fire occurrence detecting means detects that a fire has occurred in the tunnel, if the evacuation control is successful after waiting for the evacuee to evacuate, the water screen device is activated along with the detection, and the tunnel is A water curtain is formed in the crossing direction, the fire occurrence zone is divided from other zones and zoned, and combustion gas, smoke, and the like are contained in the zone, and diffusion thereof can be suppressed. Then, water spraying equipment can automatically spray water in a concentrated manner to the fire occurrence zone to promote fire extinguishing, suppress combustion, cool the structure wall, and lower the temperature of the combustion gas and smoke. After that, the inside of the tunnel is forcibly ventilated and exhausted by the ventilation device, so that the fire brigade can enter and carry out disaster prevention activities such as fire fighting activities and relief activities.
In addition, as described above, the inside of the tunnel is ventilated with the supply of vertical flow ventilation, and the fire occurrence zone can be exhausted and forced out by the semi-cross flow ventilation with an exhaust duct. Due to the synergistic effect of smoke diffusion suppression by the screen device, smoke can be discharged efficiently and operation of the smoke exhausting equipment can be ensured throughout the fire period.

Furthermore, a third tunnel disaster prevention system according to the present invention according to claim 2 of the present invention is a fire occurrence detection means that is laid along the longitudinal direction of the tunnel and detects the occurrence of a fire in the tunnel, and the tunnel The water screen device is installed at predetermined intervals along the longitudinal direction of the water, and forms a water curtain in a direction crossing the tunnel to zone the space in the tunnel at predetermined intervals, and is zoned by the water screen device. A water spray facility installed for each space; an air supply duct and an exhaust duct laid along the longitudinal direction of the tunnel; and an air supply port provided in the air supply duct and an exhaust duct And a cross-flow ventilation device that ventilates in a direction crossing the tunnel from the vented exhaust port, and the fire occurrence zone detected by the fire occurrence detection means is Zoned by a terscreen device, automatically sprays water to the fire occurrence zone by the water spray equipment, and the tunnel is fed by a cross-flow ventilation system through the air supply duct and the exhaust duct. It is characterized by exhausting and forcibly exhausting smoke.
As mentioned above, the inside of the tunnel is ventilated by a cross-flow ventilation system with a supply / exhaust duct, and the fire occurrence zone can be exhausted and forcibly exhausted. The effect can ensure efficient smoke exhaust and operation of the smoke exhaust system throughout the fire period.

Moreover, the 4th tunnel disaster prevention system which concerns on Claim 3 of this invention stopped the direct air supply from the said air supply duct with respect to the said fire occurrence zone in the stage where a fire force is strong in the 3rd system. It is characterized by this.
If air is supplied directly from the air supply duct at a stage where the fire is strong, there is a possibility that the fire will be strengthened, so by stopping the direct air supply from the air supply duct, the water is supplied through the left and right water curtains formed by the water screen device. It is desirable to care.

Furthermore, the fifth tunnel disaster prevention system is the invention according to claim 3, wherein the ventilator is combined with a ventilator of a shaft feed / exhaust system, and the exhaust system of one shaft located across the fire occurrence zone Is functioned as an air supply system, exhausted from the exhaust system of the other shaft and forcibly exhausted, and supplied to the evacuation space from the air supply system of the shaft It is.
By combining with a vertical shaft exhaust system ventilation device as described above, it is possible to forcibly exhaust smoke by supplying and exhausting the vertical flow ventilation system from the vertical shaft to the fire occurrence zone. With the synergistic effect of smoke diffusion suppression by, efficient smoke exhaust and operation of the smoke exhaust system can be ensured throughout the fire period.
In addition, the supply of pressurized air to the evacuation space can be easily realized by using a vertical exhaust air supply system.

Further, the sixth tunnel disaster prevention system is the second system, wherein a vertical-pipe exhaust system ventilation device is combined as the ventilation device, and the exhaust system of one vertical shaft located across the fire occurrence zone is an air supply system. The exhaust gas is exhausted from the exhaust system of the other shaft and forcibly smoked, and open / close dampers are provided at predetermined intervals along the longitudinal direction of the exhaust duct connected to the exhaust system of the shaft. The damper on the side far from the shaft provided in the exhaust duct is closed so that smoke is exhausted from the shaft on the side close to the generation source.
Combining with the vertical exhaust ventilation system as described above, the combustion gas, smoke, etc. are contained in the fire occurrence zone by supplying air through the vertical flow ventilation system from the vertical shaft to the fire occurrence zone. Since it can exhaust and forcibly exhaust smoke, it can exhaust efficiently by a synergistic effect with smoke diffusion suppression by a water screen device, and operation of smoke exhaust equipment can be secured throughout a fire period.

Furthermore, the seventh tunnel disaster prevention system is the same as the second system in which a ventilation system of a vertical shaft exhaust system is combined as the ventilation system, and the exhaust system of one vertical shaft located across the fire occurrence zone is supplied. Functioning as a system, exhausting from the exhaust system of the other vertical shaft and forcibly exhausting smoke, and providing opening and closing dampers at predetermined intervals along the longitudinal direction of the exhaust duct connected to the exhaust system of the vertical shaft, Close the damper on the side far from the shaft provided in the exhaust duct so that smoke is exhausted from the shaft near the fire source, and further form the main line and section of the tunnel from the supply system of the shaft It is characterized by supplying air to the evacuated space.
Combining with the vertical exhaust ventilation system as described above, the combustion gas, smoke, etc. are contained in the fire occurrence zone by supplying air through the vertical flow ventilation system from the vertical shaft to the fire occurrence zone. Since it can exhaust and forcibly exhaust smoke, it can exhaust efficiently by a synergistic effect with smoke diffusion suppression by a water screen device, and operation of smoke exhaust equipment can be secured throughout a fire period. In addition, the supply of pressurized air to the evacuation space can be easily realized by using a vertical exhaust air supply system.

Further, an eighth tunnel disaster prevention system is the system according to any one of the first, fifth, and seventh systems, wherein the evacuation space is provided in a space below the floor slab of the main tunnel (or an evacuation tunnel provided separately), and the evacuation space is provided. And the tunnel main line are connected via an evacuation communication path.
By effectively using the space under the floor slab of the tunnel main line as described above, an evacuation space separated from the main tunnel line can be easily formed, and a safer evacuation route can be secured. Can do.

As explained in detail above, according to the tunnel disaster prevention system according to the present invention, it is possible to zone the fire occurrence zone and reliably suppress the diffusion of high-temperature gas, smoke, etc. Operation of the smoke exhaust system can be ensured throughout the operation and fire period.
In addition, it is possible to zone the fire occurrence zone and spray water intensively, to promote fire extinguishing and to suppress combustion, and to cool the surrounding air temperature and the structure wall effectively.

Furthermore, an evacuation route for evacuating to a safe area can be ensured for refugees such as passengers of a traveling vehicle that has caused a fire accident.
In addition, it is possible to provide a disaster prevention system in a tunnel that can easily secure an area for the fire brigade to carry out disaster prevention activities such as relief activities and fire fighting activities.

Embodiments of the present invention will be described below with reference to FIGS.
FIG. 1 is a configuration diagram of a tunnel disaster prevention system according to a first embodiment of the present invention. (A) is a longitudinal sectional view along the longitudinal direction of the tunnel, (B) is a longitudinal sectional view in the transverse direction, and FIG. It is a block diagram of the tunnel disaster prevention system which concerns on 2nd Embodiment, (A) is a longitudinal cross-sectional view along a tunnel longitudinal direction, (B) is a longitudinal cross-sectional view of a transverse direction, FIG. 3 concerns on 3rd Embodiment of this invention. It is a block diagram of a tunnel disaster prevention system, (A) is a longitudinal sectional view along the tunnel longitudinal direction, (B) is a longitudinal sectional view in the transverse direction, FIG. 4 is a configuration of the tunnel disaster prevention system according to the fourth embodiment of the present invention. 5 is a longitudinal sectional view along the tunnel longitudinal direction, FIG. 5 is a longitudinal sectional view along the tunnel longitudinal direction showing the configuration of the tunnel disaster prevention system according to the fifth embodiment of the present invention, and FIG. 6 is according to the sixth embodiment of the present invention. Tunnel longitudinal direction showing the configuration of the tunnel disaster prevention system Longitudinal sectional view taken along, FIG. 7 is a control flow diagram of a tunnel disaster prevention system according to the present invention.

In FIG. 1, reference numeral 1 denotes a main line of a tunnel, and the tunnel has a structure having a floor slab space 2 below a traveling surface of a vehicle.
Further, the tunnel is provided with at least one type of ventilator 3 of a known longitudinal flow method, cross flow ventilation method, semi-cross flow ventilation method, and other ventilation methods, and is configured to be able to forcibly ventilate the inside of the tunnel. ing. In this embodiment, a longitudinal ventilation system is employed.

  In addition, there are methods such as jet fan type, sacchard type, and centralized exhaust type as representative types of the above-mentioned vertical flow ventilation method, and there are tunnel duct type for both air supply and exhaust, as a typical type of the cross flow ventilation method, semi-transverse ventilation Typical types of systems include the air supply system using the air duct in the tunnel and the exhaust system using the exhaust duct in the tunnel. Furthermore, the vertical flow ventilation using the vertical shaft exhaust system, the vertical flow ventilation with the electric dust collector, and the vertical shaft with the electric dust collector There are various types and types, such as a vertical flow ventilation of an air supply / exhaust method and a ventilation of an air / semi-cross flow concentrated exhaust type, and any ventilation device may be used.

In the main line 1 of the tunnel, fire occurrence detection means 4 using, for example, an optical fiber sensor for detecting the occurrence of a fire from heat, smoke, flame, temperature, etc. is laid along the entire length of the tunnel. In addition, information on vehicle fire accidents and other fire occurrences in the tunnel can be sequentially confirmed as fire source position and fire area information.
In addition, said fire information detected by the fire occurrence detection means 4 is sent to a monitoring center, is input into a computer, and is used for control of the disaster prevention system described below.

  Further, in the main tunnel 1, water screen devices 5 are installed at predetermined intervals along the longitudinal direction thereof, and the water screen device 5 ejects water in the tunnel transverse direction, and water formed thereby. The curtain allows the space in the tunnel to be zoned at predetermined intervals. The lengthwise dimension of this zone is set to be different depending on the application of the tunnel, and is appropriately set to a dimension according to the application such as a railway tunnel or a road tunnel.

In addition, a large number of water spraying facilities 6 are installed at predetermined intervals for each space in the tunnel zoned by the water screen device 5 on the ceiling portion of the main tunnel 1 so that fire extinguishing water can be automatically sprinkled when a fire occurs. It has become.
On the other hand, an evacuation path 11 is formed on both sides of the tunnel main line, and an evacuation space 7 is formed by using a space 2 under the floor of the tunnel, and the evacuation space 7 and the tunnel main line 1 are spaced at a predetermined interval. It is communicated via an evacuation communication path 8 such as a slope (slide), stairs and the like. This evacuation space 7 is provided not only for evacuated humans to pass but also for self-propelled rescue vehicles and the like.
The evacuation space 7 is supplied with pressurized air (with a differential pressure of 5 Pa or more), and this pressurized air is supplied into the tunnel main line 1 via the evacuation communication path 8. It has become. Further, it is assumed that the evacuation communication path 8 is provided with an openable / closable door and damper (not shown).

Thus, in the above embodiment, assuming that a vehicle fire has occurred in the tunnel, the position of the fire source and the fire area are detected by the fire occurrence detection means 4 using an optical fiber sensor or the like, and are sent to the monitoring center. Sent. A passenger of a vehicle that has caused a fire accident quickly evacuates from the vehicle.
At this stage, the water screen device 5 is actuated to form a water curtain across the tunnel, and the fire occurrence zone A and the zone B adjacent to the fire occurrence zone are zoned by the water curtain so that combustion gas, smoke, etc. Can be prevented, and can be contained in the fire occurrence zone A.

Thus, an evacuation route can be secured, and a evacuee from the vehicle can evacuate to the evacuation space 7 by using a slope or the like from the nearby evacuation communication path 8.
After the evacuee evacuates, the water spray facility 6 is operated to automatically sprinkle fire extinguishing water to the zoned fire occurrence zone A, thereby suppressing combustion and promoting fire extinguishing.
After that, pressurized air is supplied to the evacuation space 7 so that a differential pressure of about 5 Pa is applied to the main line 1 side of the tunnel to ensure safety on the evacuation path side, and the fire of the tunnel main line 1 through the evacuation communication path 8 Air is supplied to zone B adjacent to generation zone A. At this time, if the air is directly supplied to the fire occurrence zone A, combustion may be promoted. Therefore, it is desirable to keep the door / damper of the evacuation communication path 8 in the zone closed.

After confirming that the evacuation at the main mine has been completed, stop the water screen device 5 to cancel the zoning by the water curtain, and forcibly ventilate the inside of the main tunnel 1 using the longitudinal ventilation method. Thus, smoke, combustion gas, etc. contained in the fire occurrence zone A and the adjacent zone B can be exhausted (smoke).
On the other hand, by allowing the self-propelled rescue vehicle to enter the evacuation space 7 at this stage, the evacuees can be transported to a safe fixed point, and the fire brigade is sent from the evacuation space 7 to the main line 1 via the evacuation communication path 8. By rushing in, a fire fighting activity base can be established on the supply side of the longitudinal ventilation, and disaster prevention activities such as fire fighting activities and relief activities can be performed thereafter.

  As described above, according to the present embodiment, a water curtain is formed by the water screen device 5 until the fire occurrence is detected and the evacuees evacuate from the vehicle and evacuate to the evacuation route, and the fire occurrence zone A is defined as the zone. Can be separated from other zones B to contain smoke, combustion gas, etc., so that diffusion of smoke and the like in the tunnel longitudinal direction can be effectively suppressed, and the ambient air temperature and structure The temperature rise of the wall can be suppressed.

  Moreover, the fire in the fire zone A can be reduced by water droplets from the water curtain, etc., and the subsequent water spray from the water spray facility 6 can suppress the combustion and promote the fire extinguishing quickly. Can be extinguished, and further cooling of the combustion gas and the structure wall can be promoted.

  On the other hand, the evacuee can evacuate without being exposed to smoke and flame while evacuating to the evacuation space 7 via the evacuation route 11 and the evacuation communication route 8, and as a temporary evacuation space with the main line 1 of the tunnel. Since the partitioned evacuation space 7 can be used, it is possible to evacuate with a sense of security. In addition, after evacuating to the evacuation space 7, the vehicle can be evacuated and transported using a normal self-propelled vehicle, and disaster relief activities such as other relief activities and fire fighting activities can be performed.

Next, a second embodiment according to claim 1 of the present invention will be described with reference to FIG.
The second embodiment is an example in which a ventilator 3 of a semi-cross flow ventilation system in which an exhaust duct 9 is provided in a tunnel is employed, and an optical fiber sensor is used in the main line 1 of the tunnel, as in the first embodiment. A fire occurrence detection means 4, a water screen device 5, a water spray facility 6 and the like are laid.
It is assumed that a damper capable of opening and closing the exhaust port 10 is provided in the exhaust port 10 provided along the longitudinal direction of the exhaust duct 9.
On the other hand, in the present embodiment, a tunnel configuration is provided in which an evacuation path 11 is provided in a space between both side walls of the tunnel in the main line 1 and the main line 1.

Thus, in the second embodiment, when a fire occurs in the tunnel, the position and fire area of the fire source are detected by the fire occurrence detection means 4 using an optical fiber sensor or the like and sent to the monitoring center. A vehicle occupant who has caused a fire accident quickly evacuates from the vehicle to the evacuation path 11.
At this stage, the water screen device 5 is actuated to form a water curtain across the tunnel, and the fire occurrence zone A is zoned by the water curtain to prevent the diffusion of combustion gas, smoke, etc., and the fire occurrence zone A Can be contained.

On the other hand, the tunnel is ventilated by the longitudinal air supply by the semi-cross-flow ventilation device 3 and the forced exhaust by the cross-flow method using the exhaust duct 9, and smoke, combustion gas, etc. quickly pass through the exhaust duct 9. Exhaust (smoke).
When exhaust (smoke) such as smoke or combustion gas is high in temperature, the damper of the exhaust port 10 of the fire occurrence zone A is closed and smoke is exhausted from the adjacent zone B. When it is low, smoke may be exhausted from the fire occurrence zone A depending on the combustion state of the combustible material.

During this time, the passengers of the vehicle can evacuate to a safe area through the evacuation path 11 along the side wall of the tunnel (in some cases, evacuate to an evacuation plaza provided in the tunnel main line 1).
Then, after the passenger or the like evacuates, the water spray facility 6 is operated and water is automatically sprinkled into the fire occurrence zone A, thereby suppressing the combustion and promoting the extinguishing of the fire so that the fire can be extinguished.
Subsequently, by using the main line 1 of the tunnel to enter the self-propelled rescue vehicle to the evacuation area near the fire occurrence zone A, it is possible to evacuate and transport the evacuee to a safe fixed point. Similarly, a fire brigade can be rushed from the main line 1 with a self-propelled vehicle, and subsequent disaster prevention activities such as relief activities and fire fighting activities can be performed.

Therefore, also in the second embodiment, as in the first embodiment, a water screen is formed by the water screen device 5 to zone the fire occurrence zone A, and contain smoke, combustion gas, etc., and the exhaust duct can be quickly exhausted. As the smoke can be exhausted by forced exhaust by the cross-flow ventilation method using the No. 9, it can be surely exhausted without worrying about the diffusion of smoke in the longitudinal direction of the tunnel, and the ambient air temperature and the structure wall Temperature rise can be suppressed.
In particular, since the fire occurrence zone A is not exposed to high-temperature smoke, the fireproof coating of the tunnel structure can be made unnecessary or greatly reduced.

The water curtain can reduce the combustion of the fire area in the fire occurrence zone A, and the water spraying facility 6 can promote the cooling of the combustion gas and the structure wall, and further suppress the combustion and promote the extinction of fire. The fire can be extinguished promptly.
On the other hand, since the fire occurrence zone A is zoned and separated from other zones and the evacuation path 11 can be secured, the refugee can evacuate with a sense of security without being exposed to smoke or flame. . In addition, after evacuating to a safe area, evacuation can be carried out using a normal self-propelled vehicle, and disaster relief activities such as other relief activities and fire fighting activities can be performed.

FIG. 3 shows a third embodiment according to claim 2 of the present invention. This embodiment is an example in which a cross-flow type ventilation device 3 in which an exhaust duct 12 and an air supply duct 13 are provided in a tunnel is adopted. is there.
In the main line 1 of the tunnel, in addition to the exhaust duct 12 and the air supply duct 13, as in the first embodiment, a fire occurrence detection means 4, a water screen device 5, a water spray facility 6 and the like using an optical fiber sensor are laid. ing.
In addition, the exhaust port 14 and the air supply port 15 provided along the longitudinal direction of the exhaust duct 12 and the air supply duct 13 are provided with dampers for opening and closing the exhaust port 14 and the air supply port 15, respectively. Shall.
The space between the tunnel side walls and the main line 1 in the main line 1 has a tunnel configuration in which an evacuation path 11 is provided.

In the third embodiment, as in the second embodiment, when a fire occurs in the tunnel, the position of the fire source and the fire area are detected by the fire occurrence detection means 4 including an optical fiber sensor or the like. , Sent to the monitoring center. A vehicle occupant who has caused a fire accident quickly evacuates from the vehicle to the evacuation path 11.
At this stage, the water screen device 5 is actuated to form a water curtain across the tunnel, and the fire occurrence zone A is zoned by the water curtain to prevent the diffusion of combustion gas, smoke, etc., and the fire occurrence zone A Can be contained.

On the other hand, the inside of the tunnel is ventilated by the supply of air from the supply duct 13 by the cross-flow type ventilation device 3 and the forced discharge of the cross-flow type using the exhaust duct 12, and smoke, combustion gas, etc. quickly pass through the exhaust duct 12. Exhaust (smoke).
When exhaust (smoke) such as smoke or combustion gas is high in temperature, the damper of the exhaust port 14 in the exhaust duct 12 of the fire occurrence zone A is closed and the smoke is discharged from the adjacent zone B. If the temperature is low, smoke may be exhausted from the fire occurrence zone A depending on the combustion state of the combustible material.

During this time, a vehicle occupant or the like can evacuate to a safe area through the evacuation path 11 along the side wall of the tunnel.
Then, after the passenger or the like evacuates, the water spray facility 6 is operated and water is automatically sprinkled into the fire occurrence zone A, thereby suppressing the combustion and promoting the extinguishing of the fire so that the fire can be extinguished.
Subsequently, by using the main line 1 of the tunnel to enter the self-propelled rescue vehicle to the evacuation area near the fire occurrence zone A, it is possible to evacuate and transport the evacuee to a safe fixed point. Similarly, a fire brigade can be rushed from the main line 1 with a self-propelled vehicle, and subsequent disaster prevention activities such as relief activities and fire fighting activities can be performed.

As described above, the same effect as that of the second embodiment can be expected also in the third embodiment.
In the third embodiment, if the air is supplied directly from the air supply port 15 of the air supply duct 13 into the fire occurrence zone A at a stage where the fire is strong, there is a possibility that the fire will be strengthened. It is desirable to close the open / close damper provided in the air supply port 15 while the fire is strong, and to supply air from the adjacent zone B through the water screen of the water screen that zone the fire occurrence zone A.

Next, a fourth embodiment shown in FIG. 4 will be described.
The fourth embodiment is a combination of the vertical flow ventilator 3 of the first embodiment described above and a vertical shaft exhaust / exhaust type ventilator 16, and one of the vertical shafts 17 positioned with the fire occurrence zone A in between. The exhaust system 18 functions as an air supply system, exhausts from the exhaust system 20 of the other shaft 19 and forcibly smokes, and pressurizes the evacuation space 7 from the air supply systems 21 and 22 of the shafts 17 and 19 respectively. The air supply passages 23 and 24 for supplying air are provided.

In this 4th Embodiment, it can implement without receiving the restriction | limiting about the application extension of a tunnel, making use of the characteristic of the ventilator 16 of a vertical shaft exhaust type.
In addition, since a part of the jet air supply is guided to the evacuation space 7 through the air supply passages 23 and 24 using the pressurized jet air supply, the evacuation space 7 is pressurized and evacuated. It is possible to supply air to the main tunnel 1 from the space 7 side.
Other than the above, the second embodiment is the same as the first embodiment, and a description thereof will be omitted.

FIG. 5 shows a fifth embodiment.
This fifth embodiment is a combination of the semi-transverse ventilation type ventilator 3 of the second embodiment shown in FIG. The exhaust system 18 of one shaft 17 is made to function as an air supply system, and the exhaust system 20 of the other shaft 19 is exhausted to forcibly exhaust the smoke.

In addition, opening and closing dampers 25 are installed at predetermined intervals along the longitudinal direction of the exhaust duct 9, and when a fire breaks out, between the vertical shaft 17 on the side where the exhaust system 18 functions as an air supply system and the fire occurrence zone A The open / close damper 25 is closed, and smoke is discharged from the shaft 19 closer to the fire occurrence zone A.
According to this embodiment as well, it is possible to make use of the features of the vertical shaft exhaust type ventilation device 16 and to obtain the same effects as those of the second embodiment.

Furthermore, a sixth embodiment is shown in FIG.
The sixth embodiment is not limited to the combination of the semi-transverse ventilation type ventilation device 3 having the exhaust duct 9 and the vertical pumping type ventilation device 16 as in the fifth embodiment, but the main line of the tunnel. The evacuation space 7 defined as 1 and 2 is configured as a tunnel floor space 2 and pressurized air is supplied to the evacuation space 7 from the air supply systems 21 and 22 of the shafts 17 and 19 respectively. It is set as the structure which connected the air supply paths 23 and 24 to care.

In this case, in addition to the features of the second embodiment, the feature points of the vertical exhaust / exhaust type ventilation device 16 can be utilized, and the above-described effects obtained by partitioning the evacuation space 7 from the main line 1 of the tunnel. Can also be expected.
The application of the various ventilation devices described above differs depending on either the one-way tunnel or the two-way tunnel, not to mention the length of the tunnel, the installation environment, etc. It goes without saying that it applies.

FIG. 7 summarizes an example of the control flow of the tunnel disaster prevention system in each of the above-described embodiments. Although there are some differences between the embodiments, the approach is performed under the monitoring / command by the computer of the monitoring center. It is controlled by the contents and steps as shown in the figure, including traffic control such as prohibited measures and information transmission to related departments such as fire fighting.
However, the control flow of the tunnel disaster prevention system according to the present invention is not limited to this, and various modifications are possible.

BRIEF DESCRIPTION OF THE DRAWINGS It is a block diagram of the tunnel disaster prevention system which concerns on 1st Embodiment of this invention, (A) is a longitudinal cross-sectional view in alignment with a tunnel longitudinal direction, (B) is a longitudinal cross-sectional view of a cross direction. It is a block diagram of the tunnel disaster prevention system which concerns on 2nd Embodiment of this invention, (A) is a longitudinal cross-sectional view in alignment with a tunnel longitudinal direction, (B) is a longitudinal cross-sectional view of a cross direction. It is a block diagram of the tunnel disaster prevention system which concerns on 3rd Embodiment of this invention, (A) is a longitudinal cross-sectional view along a tunnel longitudinal direction, (B) is a longitudinal cross-sectional view of a cross direction. It is a longitudinal cross-sectional view which follows the tunnel longitudinal direction which shows the structure of the tunnel disaster prevention system which concerns on 4th Embodiment of this invention. It is a longitudinal cross-sectional view which follows the tunnel longitudinal direction which shows the structure of the tunnel disaster prevention system which concerns on 5th Embodiment of this invention. It is a longitudinal cross-sectional view which follows the tunnel longitudinal direction which shows the structure of the tunnel disaster prevention system which concerns on 6th Embodiment of this invention. It is a figure which shows an example of the control flow of the tunnel disaster prevention system which concerns on this invention. It is a block diagram of the conventional tunnel disaster prevention system, (A) is a longitudinal cross-sectional view along a tunnel longitudinal direction, (B) is a longitudinal cross-sectional view of a transverse direction.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Tunnel main line, 2 ... Space under floor slab, 3 ... Ventilation device, 4 ... Fire occurrence detection means, 5 ... Water screen device, 6 ... Water spray equipment, 7 ... Evacuation space, 8 ... Evacuation communication path, 9 ... Exhaust Duct, 10 ... Exhaust port, 11 ... Evacuation path, 12 ... Exhaust duct, 13 ... Air supply duct, 14 ... Exhaust port, 15 ... Air supply port, 16 ... Vertical shaft exhaust type ventilation device, 17 ... Vertical shaft, 18 ... Exhaust system, 19 ... Vertical shaft, 20 ... Exhaust system, 21 ... Air supply system, 22 ... Air supply system, 23 ... Air supply path, 24 ... Air supply path, 25 ... Opening / closing damper, A ... Fire occurrence zone, B ... Adjacent zone

Claims (3)

A fire occurrence detection means that is laid along the longitudinal direction of the tunnel and detects the occurrence of a fire in the tunnel;
A water screen device installed at predetermined intervals along the longitudinal direction of the tunnel, and forming a water curtain in a direction crossing the tunnel to zone the space in the tunnel at predetermined intervals;
Water spray equipment installed in each space zoned by the water screen device;
A ventilation device of a semi-cross-flow ventilation system consisting of an exhaust duct laid along the longitudinal direction of the tunnel, and ventilating in a direction across the tunnel;
A longitudinal flow ventilation system for supplying air to the tunnel in the longitudinal direction;
Zone the fire occurrence zone detected by the fire occurrence detection means by the water screen device,
While automatically spraying water with the water spray equipment for the fire occurrence zone,
The tunnel is supplied with air by the longitudinal ventilation type ventilator, and the tunnel is exhausted through the exhaust duct and forcedly exhausted by the crossflow ventilation type ventilator. A unique tunnel disaster prevention system. A fire occurrence detection means that is laid along the longitudinal direction of the tunnel and detects the occurrence of a fire in the tunnel;
A water screen device installed at predetermined intervals along the longitudinal direction of the tunnel, and forming a water curtain in a direction crossing the tunnel to zone the space in the tunnel at predetermined intervals;
Water spray equipment installed in each space zoned by the water screen device;
An air supply duct and an exhaust duct laid along the longitudinal direction of the tunnel, and the air supply port provided in the air supply duct and the exhaust port provided in the exhaust duct in a direction crossing the tunnel With a cross-flow ventilation system to ventilate,
Zone the fire occurrence zone detected by the fire occurrence detection means by the water screen device,
While automatically spraying water with the water spray equipment for the fire occurrence zone,
A tunnel disaster prevention system characterized in that the tunnel is forcibly smoked by being supplied and exhausted by the cross-flow ventilation system through the air supply duct and the exhaust duct. 3. The tunnel disaster prevention system according to claim 2, wherein direct air supply from the air supply duct to the fire occurrence zone is stopped when the fire is strong.

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