JPS61134500A - Fire extinguishing apparatus to fire of train in long tunnel - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] This invention relates to a fire extinguishing system for train fires in long railway tunnels such as the Seikan Tunnel.

[Conventional technology]

Traditionally, when a fire breaks out on a train in a railway tunnel,
The best method was to simply run the train through the tunnel, evacuate passengers from the train, and then carry out full-scale extinguishing operations with support from fire departments and other agencies.

[Problems with conventional technology]

However, in a long tunnel such as the Seikan Tunnel, which is 54km long, there is a risk that the fire will spread before the train escapes from the tunnel using its own blades, making it impossible for the train to run on its own. In such a case, it was considered to be a serious problem in terms of securing human life, as it would be impossible to escape from the tunnel by using transfer due to the slope in an undersea tunnel with a ship-bottom linear structure.

[Means for solving problems]

This invention provides a nozzle for cooling and extinguishing the space inside the tunnel and trains by discharging extinguishing agent or fire extinguishing water toward the tunnel floor at the upper part of the side wall of the tunnel in a long railway tunnel, and a nozzle diagonally upward at the lower part of the side wall of the tunnel. A nozzle is installed at the center of the track on the tunnel floor to suppress the fire under the train floor by discharging extinguishing agent or extinguishing water, and to guide and control the smoke rising along the side of the train toward the tunnel side wall to the opposite side of the train. The system is equipped with a fire extinguishing system equipped with a nozzle that discharges extinguishing agent or extinguishing water upward to extinguish fires under the train floor.

[For production]

The fire extinguishing system of the present invention can quickly and reliably extinguish fires that occur under the floor of a train or from trucks mounted on a train by installing it at a specific location in a tunnel or over the entire length of the tunnel. In addition, smoke rising from the side of the train is guided and controlled to ensure an evacuation environment on the pedestrian path.

[Embodiment] An embodiment of the fire extinguishing system of the present invention will be described below in Figures 1 to 3.
This will be explained using figures. Figure 1 is a cross-sectional view of the front tunnel.
Reference numeral 11 indicates a main pile on which the train runs, reference numeral 12 indicates a working shaft which is also used as an evacuation route in the event of an emergency, and reference numeral 13 is a slanted shaft connected to the ground and used together with the working shaft 12 as an evacuation route and as a ventilation shaft. 14.15 is a fixed point set up in the tunnel, and is a point where the train will be stopped in case of an emergency such as a fire breaking out on the train. Fig. 2 is a cross-sectional view of the fire extinguishing system installed at this fixed point, and Fig. 3 is a side sectional view thereof, where A is a nozzle installed at a predetermined distance of 4 inches on the upper part of the tunnel side wall.

This nozzle A discharges extinguishing agent or extinguishing water (hereinafter simply referred to as extinguishing water) toward the tunnel floor to cool the tunnel space and extinguish flames rising upward, as shown in Figure 4. Spiral 41 and nozzle body 42
It consists of Nozzles B are provided at predetermined intervals at the lower part of the tunnel side wall. This nozzle B discharges fire extinguishing water diagonally upward, that is, under the train floor, suppresses the fire force under the train floor, and further controls smoke rising along the side of the train tunnel side wall to the opposite side of the train. As shown in FIG. 5, the fire extinguishing water collides with the upper deflector 51 and is discharged in a fan shape. C is a head provided at a predetermined interval in the center of the track. This head C is a nozzle that extinguishes the fire by discharging fire extinguishing water upwards, that is, to the location of the fire under the train floor.As shown in FIG. Discharge a thin stream of fire extinguishing water directly above. Also, the communication hole 64. Fire extinguishing water with large particles is discharged far away through the outer cylinder 62 and the deflector 65, and is configured to spray water under the train floor in a rectangular shape.

Next, the operation of the fire extinguishing system of the present invention will be explained.

When a fire breaks out under the floor of a train running in a tunnel and the fact is reported to the train driver, the driver stops the train at the nearest fixed point 14 or 15. When the driver or the like activates the fire extinguishing system using a control panel (not shown) installed near the walking path 21 or by remote control from the disaster prevention center, fire extinguishing water is released from head A to the top of the train, causing flames to rise. extinguish the fire and cool the space.

In addition, fire extinguishing water is released diagonally above Herad B under the train floor, suppressing the strength of the fire under the floor, and guiding smoke rising along the side of the train near the tunnel side wall to the opposite side of the train. , ensuring visibility for passengers to evacuate through the walking path 21. In addition, fire extinguishing water is intensively released from head C onto the flame under the train floor to extinguish the fire.

In the above embodiment, the row in the submarine tunnel -
Although we have explained the fire extinguishing system for car fires, it can also be used in mountain tunnels and underground railway tunnels. Furthermore, if the type of train traveling through these tunnels is a car train, there is a possibility that a fire may occur in the cars on board. In that case, if aqueous film foam is used as the extinguishing agent, the foam emitted from head A will extinguish the burning car, and heads C and B will extinguish the fire caused by fuel oil leaking from the car. Ru. Further, in the above embodiment, the fire extinguishing device of the present invention is provided in a predetermined area of the tunnel, that is, at a fixed point, but the fire extinguishing device of the present invention may be provided throughout the entire tunnel.

〔effect〕

The fire extinguishing system of the present invention has heads A each having a different effect.
, B, and C are used to release extinguishing agent or extinguishing water, making it possible to efficiently extinguish fires in general trains or car trains, and to ensure an evacuation environment for passengers on walking paths. It is effective and suitable as a fire extinguishing system for train fires in long tunnels.

[Brief explanation of the drawing]

Figure 1 is a sectional view of an undersea tunnel, Figure 2 is a cross-sectional view of the fire extinguishing system of this invention, Figure 3 is a side sectional view of Figure 2, and Figures 4 to 6 are each used in this fire extinguishing system. FIG. 11・-3 piles, 12-1 working shaft, 13-・-slanted shaft, 14
．． 15-Fixed points, A, B, C-.-Nozzle. Patent applicant Jinnomi Disaster Prevention Industry Co., Ltd. (IJ02 people) Figure 1 Figure 2 Figure 3 Figure 4 Figure 5 Figure 6

Claims (1)

[Claims] A fire extinguishing system for extinguishing train fires in undersea railway tunnels, mountain tunnels, or underground railway tunnels, which discharges extinguishing agent or extinguishing water toward the tunnel floor from the upper side wall of the tunnel to fill the space within the tunnel. The nozzle that cools and extinguishes the train also discharges extinguishing agent or extinguishing water diagonally upward into the lower part of the side wall of the tunnel, suppressing the intensity of the fire under the train floor, and suppressing the smoke rising along the side of the train near the side wall of the tunnel. A train in a long tunnel characterized by a nozzle for guiding and controlling the train to the opposite side, and a nozzle for extinguishing a fire under the train floor by discharging fire extinguishing agent or extinguishing water upward at the center of the track on the tunnel floor surface. Fire extinguishing equipment for fires.