JP2004313490A - Pit mouth disaster prevention equipment for underground space structure - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To offer disaster prevention equipment which can inhibit a vehicle from advancing into a structure by consistently reporting to a driver, etc. in the pit mouth of the structure when an accident such as fire occurs within an underground structure. <P>SOLUTION: The pit mouth disaster prevention equipment for the structure, wherein a water curtain forming means which forms a water curtain in an orientation crossing the pit mouth via at least one nozzle head arranged near the pit mouth of the structure, an accident occurrence sensing means which detects an occurrence of fire and a second accident within the structure, and a control means for operation controlling the water curtain forming means based on an accident occurrence detection signal from the accident occurrence sensing means are included, and at occurrence of the accident within the structure, the water curtain is formed in the pit mouth to inhibit advancing into the structure. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention is intended to cope with an accident such as a vehicle accident or a fire accident occurring inside an underground space structure (hereinafter simply referred to as a space structure) such as an underground shopping mall, an underground parking lot, a road or a railway tunnel. The present invention relates to disaster prevention equipment at the entrance and exit of a space structure (hereinafter referred to as lower pit).
[0002]
[Prior art]
2. Description of the Related Art Conventionally, when an accident such as a vehicle accident or a fire accident occurs in a tunnel or the like, which is one of the spatial structures, a dedicated speaker or an ITV (industrial television: a dedicated television for remotely monitoring and transmitting the situation. ), Etc., to inform the driver of the vehicle and other accidents, as well as to inform the driver of the vehicle and other accidents by signals installed at the entrance, which is the entrance and exit of the tunnel. I try to prevent it.
[0003]
On the other hand, in the case of a fire accident or the like inside the tunnel, the area where the fire occurs is divided by non-combustible wall members (zoning), and the area where the fire occurs is separated from other areas, so that the fire or hot smoke A device that prevents expansion and diffusion to other regions has been proposed (for example, see Patent Document 1).
Further, in order to form a fire protection compartment in a large space, a plurality of water curtain nozzles are arranged along the ceiling surface of the space, thereby forming a fire protection compartment between the nozzle rows or between the nozzle row and the partition. In the event of a fire, there has been proposed a method in which pressurized water is sprayed from a water curtain nozzle row in the fire prevention section to block fire and high-temperature smoke by a water screen (water screen) to section a fire occurrence area. . (See, for example, Patent Document 2).
[0004]
[Patent Document 1]
JP-A-9-271526 (Claims, FIG. 1)
[Patent Document 2]
JP-A-2002-248179 (paragraph 0011, FIG. 1)
[0005]
However, according to the above-described conventional technology, it is possible to partition an underground space structure, for example, an accident occurrence area such as a fire that has occurred in a tunnel, and to prevent the spread of flames and high-temperature smoke to other areas, and to prevent the spread. However, simply installing signals, speakers, ITV, etc. at the entrance of such a tunnel may cause the driver to enter the tunnel without noticing the occurrence of the accident, thereby causing a fire accident. Or may become an obstacle to disaster prevention activities such as firefighting and rescue.
[0006]
Particularly, tunnels in Japan often use face-to-face traffic, and vehicles may enter from the opposite lane of face-to-face traffic, which is a major obstacle to disaster prevention activities such as firefighting and rescue. Also, when a vehicle enters the lane on the accident side, it must be evacuated leaving the vehicle behind the fire area, which not only hinders disaster prevention activities but also increases the possibility of fire spread to the vehicle. There are problems that arise.
[0007]
On the other hand, if a fire occurs in a face-to-face traffic tunnel, stop the ventilation system and approach a calm state, or use a cross-flow or vertical flow ventilation system for a long one-way tunnel. However, if a vehicle enters, it is unavoidable that a push flow will occur, and even if the fire area can be compartmentalized, intrusion of outside air flow from the wellhead Therefore, there is a problem that the airflow causes the movement of air in the tunnel and promotes the inclination of the flame and the diffusion of high-temperature smoke.
[0008]
[Problems to be solved by the invention]
SUMMARY OF THE INVENTION The present invention has been made to address the above-described problems. The first problem is that when an accident such as a fire occurs in a space structure, the driver or the like is surely notified of the accident at the wellhead. It is an object of the present invention to provide a disaster prevention facility that can prevent a vehicle from entering a space structure by notifying the user of a disaster.
Another object of the present invention is to prevent the intrusion of external airflow from a wellhead and the generation of a push flow due to the approach of a vehicle to minimize the generation of airflow in a space structure, and to define a fire-producing area. An object of the present invention is to provide disaster prevention equipment at a tunnel entrance that can further enhance the effect of preventing the spread and diffusion of flame and high-temperature smoke.
[0009]
A further object of the present invention is to provide a more reliable method of notifying the occurrence of an accident in a space structure by not only one notification means but also a combination of a plurality of different notification means. An object of the present invention is to provide disaster prevention equipment capable of notifying a driver of a vehicle or the like.
Another object of the present invention is to provide a disaster prevention facility that can reduce obstacles to disaster prevention activities.
[0010]
[Means for Solving the Problems]
In order to solve the above problems, the underground disaster prevention equipment for an underground space structure according to claim 1 traverses the well through at least one or more nozzle heads disposed near the well. A water curtain forming means for forming a water curtain in the direction, a fire, an accident occurrence detecting means for detecting that another accident has occurred in the structure, and an accident occurrence detection signal from the accident occurrence detecting means. Control means for controlling the operation of the water curtain forming means, when an accident occurs in the structure, a water curtain is formed at the wellhead to prevent entry into the structure, Is what you do.
According to the disaster prevention equipment described above, when an accident occurs in the underground space structure, the accident is detected, the water curtain forming means provided near the wellhead is operated, and the water squirted from the nozzle head crosses the wellhead. Since a water curtain is formed on the vehicle and the wellhead of the structure can be closed by the water curtain, a vehicle driver or the like can surely confirm this when approaching the wellhead. Thus, the vehicle can be prevented from entering beforehand, and the water curtain can prevent the outside air flow from entering the wellhead.
[0011]
The underground space disaster prevention equipment for underground space structure according to claim 2 is the underground disaster prevention equipment for structure according to claim 1, wherein the nozzle head forming the water curtain forming means is provided along the wellhead. It is characterized in that a plurality are arranged at intervals.
By arranging a plurality of nozzle heads at predetermined intervals in this manner, a water curtain can be continuously formed without gaps, and the water curtain can block a wellhead of an underground space structure. The interval between the nozzle heads depends on the specifications of the nozzle head and the size of the wellhead of the structure, but can be set in a range of approximately 0.5 to 2.0 m in the cross-sectional direction of the tunnel. Also, multiple installations can be provided in the depth direction of the tunnel.
[0012]
Furthermore, the wellhead disaster prevention equipment for an underground space structure according to claim 3 is the wellhead disaster prevention equipment for a structure according to any one of claims 1 or 2, wherein the waterhole is provided near the wellhead. A light projecting means for projecting light is additionally provided. By projecting light onto the water curtain as described above, the presence of the water curtain can be easily recognized regardless of day or night. In addition, as the light to be projected, it is desirable to select light in a wavelength band in which the presence of a water curtain is most conspicuous and easy to recognize, and the wavelength band may be changed in a time zone for day and night. .
[0013]
Further, the underground disaster prevention equipment for underground space structure according to claim 4 is the underground disaster prevention facility for underground space structure according to claim 3, wherein, as the light projecting means, color, text, and picture information together with light are used. It is characterized by using light projection means for projecting at least one together.
By projecting not only light but also information such as colors, characters, and pictures, such visual information can be displayed on a water screen, so that accident occurrence information can be further confirmed. Can be made easier.
[0014]
In addition, the pit entrance disaster prevention equipment for underground space structures according to claim 5 is the pit entrance disaster prevention equipment for structures according to any one of claims 1 to 4, for transmitting accident information to the vicinity of the entrance. , A speaker, an ITV, and the like.
In addition to the closure of the pit by the water curtain formed by the above-mentioned water curtain forming means, the light projected from the light projecting means to the water curtain, and the broadcasting from signal means, speakers, ITV, and other notification means conventionally used. , Sound, signal information and the like can be used together, so that the accuracy of information transmission and the accuracy of status confirmation can be further improved.
[0015]
Furthermore, the wellhead disaster prevention equipment for an underground space structure according to claim 6 is provided near the wellhead of the structure, and is activated when a fire or other accident occurs in the structure to cross the wellhead. A water curtain forming means for forming a water curtain, and a light emitting means installed near the wellhead and projecting light to the water curtain, when an accident occurs in the structure, the wellhead The water curtain formed and the light projected on the water curtain prevent entry into the structure.
With the installation of such disaster prevention equipment, when an accident occurs in the underground space structure, a water screen is formed in a direction crossing the wellhead by a water curtain forming means at the wellhead of the structure, and the wellhead of the structure is formed. This allows the driver to be notified of the occurrence of the accident and to prevent the vehicle from entering the underground space structure and prevent the outside air flow from entering through the pit, and at the same time, By projecting the light, the presence of the water curtain can be more easily recognized day and night, and the effect of notifying the accident can be enhanced.
[0016]
BEST MODE FOR CARRYING OUT THE INVENTION
An embodiment of the present invention will be described below with reference to FIGS.
FIG. 1 is a vertical cross-sectional view of the vicinity of a wellhead showing a schematic configuration of a wellhead disaster prevention facility for a tunnel, which is one of the underground space structures according to the embodiment of the present invention, and FIG. 2 is a perspective view thereof.
[0017]
In the figure, reference numeral 1 denotes various tunnels such as a road tunnel which is one of the underground space structures, 2 denotes a tunnel entrance of a tunnel 1 including a branch entrance of a branch tunnel branching in the tunnel, an evacuation exit of an evacuation tunnel, and 3 denotes a tunnel. The road 4 connected to the tunnel 1 indicates a vehicle traveling on the road 3.
The tunnel 1 is provided with a ventilator (not shown) and a fire curtain (water screen) formed by jetting water from a non-combustible wall member or a water curtain nozzle. Tunnel disaster prevention equipment etc. are installed for compartmentalization and to prevent the spread and spread of flame and high-temperature smoke.
[0018]
In the tunnel 1, an accident occurrence detecting means for detecting an accident such as a fire inside the tunnel, a cable for transmitting the accident information and the situation of the accident to the monitoring center 5, A transmission cable for transmitting the computer command from the center 5 to operate the above-described non-combustible wall member or water curtain nozzle, a water supply system for pressurized water to a water curtain nozzle or a fire hydrant, a dust collection system, a ventilation fan, a lighting system, etc. A disaster prevention facility 6 and a drainage facility 7, which are composed of power cables and the like, are installed.
[0019]
Further, at the wellhead 2 of the tunnel 1, a signal 8 for transmitting accident information to a driver or the like by broadcasting, sound information, etc., a speaker, an ITV 9 and the like are installed in a position that is easy for the driver and the like to see. I have.
In addition, when an accident such as a fire occurs in the tunnel 1 near the pit 2 of the tunnel 1, it is operated through the disaster prevention equipment 6 for detecting the accident and the control means 13 in the monitoring center 5 to eject pressurized water. A water curtain forming means 10 including a nozzle head 11 for forming a water screen (water screen) 12 is provided.
[0020]
A plurality of nozzle heads 11 are provided at predetermined intervals so that the water curtain 12 can be continuously formed without gaps to close the tunnel entrance 2. The interval at which the nozzle heads 11 are arranged depends on the specifications of the nozzle heads 11 and the size of the tunnel pit 2, but can be set in a range of approximately 0.5 to 2.0 m. The ejection angle, direction, and the like are adjusted so as to form No. 12.
The nozzle head 11 may be arranged so as to form a plurality of (for example, double) water curtains 12 in the longitudinal direction of the tunnel as necessary. Such an arrangement is effective in enhancing the sealing function of the wellhead 2 and improving the effect of blocking the inflow of outside air.
When ventilation such as longitudinal ventilation is performed and partitioning is not required, the nozzle head spacing is set roughly to adjust so as not to interfere with ventilation.
[0021]
In the vicinity of the tunnel entrance 2, a light projecting unit 14 that projects light toward the water curtain 12 formed by the water curtain forming unit 10 is installed. When a fire accident is detected, the light emitting means 14 is controlled to operate in conjunction with the water curtain forming means 10 via the control means 13 in the monitoring center 5. The light is preferably in a wavelength band in which the presence of a water curtain emerges and is most conspicuous to a driver or the like, and the wavelength band of the light may be changed between day and night. .
[0022]
Further, as the light projecting means 14, a light projecting means capable of projecting not only light but also information such as colors, characters, pictures, etc. can be used. By doing so, it is possible to make them appear on the water curtain (water screen), so that the accident occurrence information can be more easily confirmed to the driver of the vehicle 4 or the like.
[0023]
In the above-described embodiment, assuming that an accident such as a vehicle fire occurs in the tunnel 1, the position of the fire source and the fire area are detected by the fire occurrence detection means of the disaster prevention equipment 6, and the information is provided. Is transmitted to the monitoring center 5. Passengers of the vehicle that has caused the fire will immediately evacuate the vehicle if it is determined that the initial fire extinguishing cannot be performed.
When smoke is controlled by compartmentalization, the tunnel disaster prevention system is activated at this stage, and the ventilation system, non-combustible wall members, water screens, and other compartmentalizing devices are controlled to separate the fire area from the adjacent area. This prevents the spread and spread of flames and high-temperature smoke, etc., so that they can be contained in a fire-producing area.
[0024]
As a result, an evacuation route can be secured, and evacuees from the vehicle in which a fire has occurred can be evacuated via a nearby evacuation route or a road connected to a tunnel. After evacuees have evacuated, by operating sprinkler devices such as water spray equipment, water can be automatically sprinkled with water for fire extinguishing in the compartmentalized fire occurrence area, or suppression of combustion using foam extinguisher, Promote fire fighting.
[0025]
On the other hand, when it is detected that an accident such as a fire has occurred in the tunnel 1, the following vehicle 4 is prevented from entering the tunnel, and the tunnel of the outside air flow is used when compartmentalization or face-to-face traffic makes it possible to approach the windlessly. In order to prevent intrusion into the inside, the following disaster prevention equipment provided at the tunnel entrance 2 is operated via the control means 13 of the monitoring center 5.
[0026]
One of them is a signal 8, a speaker and an ITV 9 installed at the tunnel entrance 2, and transmits accident information as a signal, broadcast, sound information, etc. to the driver of the vehicle 4 as in the conventional case.
Separately, the water curtain forming means 10 provided near the tunnel wellhead 2 is operated, and pressurized water is jetted from the nozzle head 11 to form a water screen (water screen) 12 at the tunnel wellhead 2. The tunnel entrance 2 is closed by the water curtain 12.
[0027]
Further, by projecting light from the light projecting means 14 onto the water curtain 12, the water curtain is raised regardless of day or night, and its presence is easily recognized. In addition, by projecting information such as various colors, characters, and pictures at the same time as this light, the visual information can be made to appear on the water curtain 12, so that the accident occurrence information can be more easily confirmed. .
[0028]
Therefore, according to the above-described embodiment, when approaching the wellhead 2 of the tunnel 1, the accident information in the tunnel 1 is transmitted not only from the conventional signal 8, the speaker and the information from the ITV 9, but also to the wellhead 2. Can be confirmed by the water curtain 12 formed so as to block the vehicle and various kinds of visual information including the light projected on the water curtain 12, so that the driver of the vehicle 4 can surely confirm the occurrence of an accident in the tunnel 1. Then, by taking measures to avoid entering the tunnel, changing the direction of travel in a safe direction at the junction of the tunnel, and the like, it is possible to avoid a panic state (confusion).
[0029]
In particular, since the occurrence of an accident can be confirmed by a combination of a plurality of pieces of information instead of one piece of information, it is possible to more reliably recognize the occurrence of the accident.
Along with this, various obstacles caused by the vehicle 4 entering the tunnel 1 where the accident has occurred, that is, obstacles to firefighting and rescue activities due to entering the oncoming lane, and entry into the same lane. The occurrence of secondary fires due to the spread of fire on vehicles can be eliminated, and disaster prevention activities can be facilitated.
[0030]
Furthermore, when approaching the windless state due to compartmentalization or face-to-face traffic, the tunnel entrance 2 is closed with a water curtain to suppress the intrusion of external airflow and the generation of push flow due to vehicle entry, and the air movement in the tunnel 1 ( A great effect can be expected, such as minimizing the generation of airflow, and expanding the flame and high-temperature smoke by partitioning the fire occurrence area, and further improving the effect of preventing the spread.
[0031]
【The invention's effect】
As described in detail above, according to the disaster prevention equipment according to the present invention, when an accident such as a fire occurs in an underground space structure, it is possible to reliably notify a vehicle driver or the like at the wellhead of the structure. Therefore, it is possible to prevent the vehicle from entering the accident-occurring structure, thereby preventing the occurrence of secondary disaster and facilitating disaster prevention activities.
[0032]
In addition, when it is necessary to approach a windless area due to compartmentalization or face-to-face traffic, it suppresses the intrusion of outside air from the entrance of the structure and the generation of push flow due to vehicle entry, and minimizes the generation of airflow in the structure Therefore, it is possible to further improve the effect of preventing the spread and diffusion of flame, high-temperature smoke, and the like due to the division of the fire occurrence area. In addition, according to the disaster prevention equipment at the entrance of the structure according to the present invention, the occurrence of an accident in the structure can be notified not only by one notification means but also by a combination of a plurality of different notification means in a complex manner. Thus, the occurrence of an accident in the structure can be more reliably notified.
[Brief description of the drawings]
FIG. 1 is a vertical cross-sectional view near a wellhead showing a schematic configuration of a disaster prevention facility according to an embodiment of the present invention.
FIG. 2 is a perspective view near a wellhead showing a schematic configuration of the disaster prevention equipment according to the embodiment of the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Underground space structure (tunnel), 2 ... Wellhead, 3 ... Road, 4 ... Vehicle, 5 ... Monitoring center, 6 ... Disaster prevention equipment, 7 ... Drainage equipment, 8 ... Signal, 9 ... Speaker and ITV, 10 ... Water Curtain forming means, 11 nozzle head, 12 water curtain, 13 control means, 14 light emitting means

Claims (6)

Water curtain forming means for forming a water curtain in a direction transverse to the wellhead through at least one or more nozzle heads disposed near the wellhead of the underground space structure;
Fire occurrence detection means for detecting that a fire or other accident has occurred in the underground space structure,
Control means for controlling the operation of the water curtain forming means based on an accident occurrence detection signal from the accident occurrence detection means,
In the event that an accident occurs in the underground space structure, a water curtain is formed at the wellhead to prevent entry into the underground space structure, and the underground space structure has a wellhead disaster prevention facility. 2. The underground disaster prevention facility for underground space structures according to claim 1, wherein a plurality of nozzle heads constituting the water curtain forming unit are arranged at predetermined intervals along the well. 3. 3. A pit entrance protection system for an underground space structure according to claim 1, further comprising a light projecting means for projecting light onto the water curtain near the entrance. . 4. The pit entrance disaster prevention equipment for an underground space structure according to claim 3, wherein a light projecting unit that projects at least one of color, character, and picture information together with light is used as the light projecting unit. The underground space structure according to any one of claims 1 to 4, wherein at least one of a signal, a speaker, an ITV, and the like for transmitting accident information is provided near the wellhead. Wellhead disaster prevention equipment. Water curtain forming means provided near the entrance of the underground space structure, which is actuated when a fire or other accident occurs in the underground space structure to form a water curtain in a direction transverse to the entrance.
A light projecting unit that is installed near the wellhead and emits light to the water curtain, and when an accident occurs in the underground space structure, a water curtain and a water curtain formed at the wellhead are provided. An underground disaster prevention facility for an underground space structure, wherein the underground space structure is prevented from entering into the underground space structure by the emitted light.

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