JP2014214452A - Flue gas control system and pit mouth closing apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a flue gas control system capable of performing a reliable flue gas control at a low cost in the case of fire breaking in a tunnel, and a portal closing apparatus used in the flue gas control system.SOLUTION: An air velocity nulling system for controlling flue gas inside a tunnel T includes: a portal unit U configured by a closing sheet 10 closing so as to cover a portal Ki of the tunnel T, a storage part 62 for storing the closing sheet 10, a take-up motor 54 for configuring a closed state by installing the stored closing sheet 10 at a prescribed position for the portal Ki, and a ventilation duct 20 capable of changing over a ventilation state in which it is ventilable between the inside and the outside of the tunnel T and a cut-off state in which ventilation is cut off in the vicinity of the portal Ki; and a control part for performing opening/closing changeover control of the portal unit U and opening/closing changeover control of the ventilation duct 20.

Description

  For example, the present invention relates to a smoke control system and a wellhead closing device that can realize smoke control by zero wind speed when a fire occurs in a road tunnel or the like.

Conventionally, when a fire has occurred in a closed space such as a road tunnel,
It is recognized that the smoke can cause evacuation of passengers such as passengers of vehicles passing through the tunnel, leading to a major disaster, and control the exhaust of smoke in the tunnel. Is very important.

  For example, in a road tunnel that allows one-way traffic, if there is no traffic jam ahead of the direction of fire from the location where the fire occurred, smoke is exhausted ahead of the direction of travel, so that the vehicle is congested behind the fire direction. Passengers can evacuate safely.

  Conversely, in a road tunnel that allows one-way traffic, if there is a traffic jam ahead of the direction of travel from the location of the fire, if smoke is exhausted forward of the direction of travel, the vehicle that is congested ahead of the direction of travel from the location of the fire Passengers will not be able to evacuate safely, so that the wind speed in the direction of travel in the vicinity of the fire is close to 0 m / s so that smoke does not diffuse in the front-rear direction from the point where the fire occurred. By controlling the vehicle to stay in the vicinity of the vehicle, the passengers of the vehicle ahead and behind the direction of travel of the fire can safely evacuate.

  In the tunnel, jet fans as described in Patent Document 1 are arranged at predetermined intervals in the tunnel axis direction for ventilation in the tunnel. Further, the smoke emission control as described above is performed in combination with not only a jet fan for tunnel ventilation but also a jet fan installed for smoke emission control.

  However, in order to perform smoke emission control with the jet fan as described above, it is necessary to finely control the air volume and the ventilation direction based on the wind speed in the tunnel. Therefore, in order to perform smoke emission control with high accuracy using a jet fan, it is necessary to install a large number of smoke emission control jet fans and perform extremely complicated control.

  In addition, if a jet fan installed in the vicinity of a fire occurrence point is operated, smoke is diffused, and therefore a jet fan disposed within a certain distance (for example, 500 m) from the fire occurrence point cannot be operated. . Therefore, since the position of the jet fan that can be operated varies depending on the fire occurrence point, the number of installed jet fans for smoke emission control further increases.

Furthermore, when lamps such as merge and branch are in the middle of the tunnel, the efficiency of flue gas control is reduced by the lamps, and the number of installed lamps further increases.
If a large number of jet fans are installed in this way, it will lead to an increase in the size of power distribution facilities, an increase in initial costs and running costs, and a complicated control of a large number of jet fans. It was difficult to control.

JP 2010-116768 A

  Accordingly, the present invention provides a smoke control system that can perform smoke emission control inexpensively and reliably in the event of a fire in a tunnel, and a wellhead closing device used in the smoke control system. Objective.

  The present invention is a smoke control system for controlling smoke emission inside a tunnel, comprising a closing means for covering a tunnel wellhead, a storing means for storing the closing means, and the stored closing means, Installation means that is installed at a predetermined position with respect to the wellhead and forms a closed state, and ventilation means that can switch between a ventilation state in which the inside and outside of the tunnel can be ventilated and a shutoff state in which ventilation is blocked in the vicinity of the wellhead A smoke exhaust control system comprising: a wellhead closing device comprising: a control device for performing closing control of the wellhead closing device and opening / closing switching control of the ventilation means; and a wellhead closing device used for the smoke removal control system. It is characterized by being.

The closing means is flame-proof and flexible sheet-like closing means, such as a shutter or door closing means, and has a flame-proofing means and can block the flow of air into the tunnel. can do.
The tunnels include not only road tunnels that allow automobiles to pass, but tunnels that constitute human roads, tunnels that allow passage of railways, etc., and further, tunnels that allow passage in one direction, The concept may include a tunnel that allows traffic in both directions.

  The ventilation means may be constituted by another device such as an open / close type ventilation fan or a ventilation duct with a flap, and at least a part of the closing means in a closed state that closes the wellhead is opened so that ventilation is possible. It may function as a means.

  The above-described closing control of the wellhead closing device may perform not only the control for closing the closing means but also the opening control for opening part or all of the closed closing means, that is, the control for closing at least the closing means. Shall.

According to this invention, it is possible to perform reliable smoke control.
Specifically, the closing means for closing the tunnel entrance, the storage means for storing the closing means, and the stored closing means installed at a predetermined position with respect to the entrance are installed in the well closing device. For example, in the normal case, the closing means is stored in the storage means, and when the occurrence of a fire is detected, the closing means stored in the storage means is moved to a predetermined position by the installation means. By closing the wellhead and closing the wellhead, the flow of air from the wellhead to the inside of the tunnel can be cut off, so the wind speed in the tunnel can be easily reduced to 0 m / s without using a jet fan, and smoke can be stagnated. it can. Note that the wind speed of 0 m / s is a concept that includes not only a complete no wind condition but also a wind speed that does not hinder the evacuation of passersby even if smoke is diffused. A state obtained by controlling the wind speed to 0 m / s is called zero wind speed.

In addition, since the tunnel closing device is provided with ventilation means capable of switching between a ventilation state in which the inside and outside of the tunnel can be ventilated and a blocking state in which ventilation is blocked in the vicinity of the tunnel opening, Even in the closed state, by switching the ventilation means to open and close, it is easy to smoke in the tunnel axial direction using a jet fan and to stagnate smoke at a wind speed of 0 m / s in the tunnel You can switch to
Thereby, since the wellhead closed state can be maintained regardless of the method of smoke control, it is possible to prevent the following vehicle from entering the tunnel where the fire is occurring by mistake.

Furthermore, in this way, by including the control device that performs the closing control of the wellhead closing device and the opening / closing switching control of the ventilation means for controlling the flue gas, the accuracy according to the state inside the tunnel The exhaust port control can be performed by well controlling the well closing device and the ventilation means. Therefore, compared with the case where the wind speed is zeroed using a jet fan installed inside the tunnel, it is possible to carry out a precise wind speed nullification with a small and inexpensive equipment, and in the event of a fire inside the tunnel. Even in this case, for example, a passerby such as a passenger of a vehicle to pass through can evacuate safely.
In addition, when smoke is exhausted using the above-described wellhead closing device, more efficient smoke control can be performed by using it together with a jet fan provided inside the tunnel.

As an aspect of the present invention, the tunnel is allowed to pass in one direction, and the wellhead closing device can be provided at the entrance-side wellhead to the inside of the tunnel.
The approach side wellhead includes not only the entrance side wellhead to the tunnel main line but also the entrance side wellhead to the ramp that joins the main line.

According to the present invention, it is possible to realize smoke emission control that allows a passer-by to evacuate safely with a small number of facilities.
In detail, tunnels always have entrance and exit side pits, but when the exit side pits are closed, for example, a passing vehicle quickly passes from the inside of the tunnel in the direction of travel. Will be an obstacle to evacuation. Moreover, it cannot alert that the fire has occurred in the tunnel, and for example, a new passerby such as a following vehicle may enter the tunnel.

  For such a problem, by closing the entrance-side wellhead, it is possible to block the air flow inside the tunnel and realize reliable smoke control that allows a passer-by to evacuate safely. Furthermore, by closing the entrance-side wellhead, it is possible to prevent new passers-by such as subsequent vehicles from entering the tunnel where the fire is occurring. Therefore, there may be a mix of passers evacuating backwards in the direction of travel toward the entrance pit and new passers entering the tunnel from the entrance pit, making it impossible for the passers inside the tunnel to evacuate safely. Nor.

Further, as an aspect of the present invention, the control device can be configured to perform the closing control based on information on the occurrence of a fire inside the tunnel.
The fire occurrence information can be fire occurrence information acquired in various forms such as information detected by a camera or a sensor installed inside the tunnel, information obtained by a report from a passerby, or the like.

According to the present invention, smoke emission control can be performed more reliably and quickly.
Specifically, for example, when closing a wellhead closing device by an administrator who has confirmed the occurrence of a fire with a fire detector or the like, it takes time from the occurrence of a fire to the closing of the wellhead closing device. Based on the above, the control device controls the closing of the wellhead closing device, so that the wellhead closing device can be quickly closed and smoke control can be performed. Note that the confirmation of the occurrence of the fire may be, for example, based on a report from a passerby such as a vehicle occupant, and an administrator manually operating the control device.

Further, as an aspect of the present invention, the control device, based on traffic congestion information inside the tunnel, closes the ventilation means when there is traffic jam ahead of the direction of travel inside the tunnel from the fire occurrence location, When there is no traffic jam ahead in the traveling direction, the ventilation means can be controlled to be opened.
The traffic jam information can be information detected by a camera or a sensor provided in the tunnel.

According to the present invention, efficient smoke control can be performed more reliably and accurately.
More specifically, the control device closes the ventilation means based on traffic jam information inside the tunnel when the traffic jam occurs ahead of the direction of travel inside the tunnel from the location of the fire, and forward of the direction of travel If there is no traffic jam, the ventilation means is controlled to open. For example, when traffic jam occurs in the forward direction in the tunnel when the tunnel closing device is controlled to close based on the fire occurrence information, the wind speed in the tunnel is controlled to 0 m by closing the ventilation means. / S to prevent smoke diffusion. After that, a passerby forward in the direction of travel from the fire occurrence location exits from the exit side pit, and by eliminating the traffic jam ahead of the direction of fire from the location of the fire occurrence, by using the jet fan to open control the ventilation means Appropriate smoke emission control can be performed according to the traffic state inside the tunnel, such as smoke being smoked forward.

Moreover, as an aspect of the present invention, the closing means can be constituted by a closing sheet having flameproofness and flexibility.
According to the present invention, the storage means for storing the closing means at the normal time can be configured compactly. Moreover, since it has flameproofness, it is possible to prevent the possibility that the closing means spreads out and the smoke emission control cannot be performed carelessly.

In addition, since a flexible sheet is used as the closing means, for example, when an emergency vehicle enters from the outside of the tunnel that has been once closed, it can be easily entered without opening the well opening closing device. Passers trying to evacuate can easily evacuate.
The closing sheet may be any material or shape as long as it blocks airflow from the tunnel wellhead, and may be any opening / closing method.

As an aspect of the present invention, the closing means can be provided with an explicit portion that clearly indicates that the tunnel is closed in the closed state.
According to the present invention, it is possible to clearly indicate that the tunnel is closed to subsequent passers-by who are going to enter the tunnel in which the wellhead is closed, and more reliably prevent accidental entry into the tunnel. it can.

As an aspect of the present invention, an illuminating unit that illuminates the closing unit in the closed state can be provided.
According to the present invention, it is possible to clearly indicate that the tunnel is closed by illuminating the closing means, for example, even at night, to a subsequent passerby who intends to enter the tunnel with the wellhead closed. It is possible to more reliably prevent accidental entry into the tunnel.

  Further, as an aspect of the present invention, the tunnel is an existing tunnel having an inclined wellhead in which the wellhead is inclined in the tunnel axial direction from below to above, so that the end of the wellhead is substantially perpendicular to the inclined wellhead. An extension part to be added can be formed, and the wellhead closing device can be provided in the extension part.

  According to the present invention, even in an existing tunnel having an inclined wellhead that is inclined in the tunnel axis direction, an extension portion is formed, and the wellhead closing device is provided in the extension portion, thereby reducing the cost, as described above. Accurate smoke control can be performed.

  According to the present invention, it is possible to provide a smoke emission control system that can perform smoke emission control inexpensively and reliably at the time of a fire in a tunnel, and a wellhead closing device used in the smoke emission control system. it can.

Explanatory drawing about the tunnel which mounts a wind speed zeroing system. The schematic perspective view of the state which mounted the wellhead unit. The schematic perspective view about a wellhead unit in a closed state. The block diagram of a wind speed zeroing system. The schematic longitudinal cross-sectional view of a normal ventilation state. Explanatory drawing of the operating state of a wind speed zeroing system. Explanatory drawing of the operating state of a wind speed zeroing system.

An embodiment of the present invention will be described below with reference to the drawings.
1 shows an explanatory diagram of the tunnel T in which the wind speed nulling system 1 is mounted, FIG. 2 shows a schematic perspective view of a state in which the wellhead unit U is attached to the entrance-side wellhead Ki, and FIG. 3 shows a closed state. The schematic perspective view about the wellhead unit U is shown. 1A is a schematic plan view of the tunnel T, and FIG. 1B is a schematic perspective view of the entrance side wellhead Ki of the tunnel T.

  4 is a block diagram of the wind speed nulling system 1, FIG. 5 is a schematic longitudinal sectional view of the normal ventilation state in the tunnel T, and FIGS. 6 and 7 are explanatory diagrams of the operating state of the wind speed nulling system 1. Is shown. Specifically, FIG. 6 (a) shows a schematic longitudinal sectional view of the tunnel T in a state where a fire has occurred in the tunnel T, and FIG. 6 (b) shows a schematic longitudinal sectional view of the state where the closing sheet 10 of the wellhead unit U is closed. FIG. 7A shows a schematic longitudinal sectional view of a state in which the front traffic vehicle Cb ahead of the fire occurrence point F of the tunnel T has been evacuated, and FIG. A schematic longitudinal sectional view is shown.

  A tunnel T equipped with a wind speed zeroing system 1 to be described later is a road tunnel that allows passage in one direction from the upstream entrance pit Ki to the downstream exit pit Ko in the direction of travel. A merge lamp Li that merges and an exit lamp Lo that branches and exits are provided. The merge lamp Li is provided with an entrance side wellhead Ki, and the exit lamp Lo is provided with an exit side wellhead Ko.

The tunnel T has a cross-sectional arch shape and forms a two-lane road.
As shown in FIG. 1 (b), the entrance side wellhead Ki is formed in an inclined shape that inclines along the traveling direction X from below to above according to the shape of the natural ground and embankment of the entrance side wellhead Ki. ing.

  As shown in FIG. 4, the wind speed nulling system 1 equipped in such a tunnel T includes a wellhead unit U installed at the entrance-side wellhead Ki, an internal facility 100 provided inside the tunnel T, and a wellhead unit U. It is comprised with the control part 2 to control.

  The control unit 2 is a control device composed of a CPU, ROM and RAM that can control the operation of the wellhead unit U, a storage device such as a hard disk, a storage medium reading device that reads a storage medium such as a DVD-ROM or CD-ROM, Or a personal computer equipped with a storage medium read / write device, an input device such as a mouse or a keyboard, a display device composed of a CRT or a liquid crystal screen, and a communication device such as a LAN board for communicating via a communication line Alternatively, the administrator may be remotely operated, or may operate according to a preset program. Further, it may be installed in the vicinity of the entrance side pit Ki of the tunnel T and operated by an administrator or an emergency vehicle passenger.

  As the internal equipment 100, inside the tunnel T, a jet fan 101 provided at a predetermined interval in the extension direction, that is, the tunnel axis direction, a fire detection device 102 provided at an appropriate interval, and a traffic jam detection device 103 and so on. The jet fan 101 is provided for normal ventilation inside the tunnel T. The internal equipment 100 is connected to the control unit 2 and transmits detection information detected by the fire detection device 102 and the traffic jam detection device 103 to the control unit 2, and the control unit 2 turns on / off each of the plurality of jet fans 101. It is the structure which performs control, a wind direction, or air volume control.

  In FIG. 4, the fire detection device 102, the traffic congestion detection device 103, the jet fan 101, and the wellhead unit U are connected to the control unit 2 and are controlled by the control unit 2, but the fire detection device 102, The structure which cooperates the control part which controls each of the traffic congestion detection apparatus 103, the jet fan 101, and the wellhead unit U may be sufficient.

Further, the wellhead unit U controlled by the control unit 2 includes a driving device 50 that drives the closing sheet 10, the ventilation duct 20, the flashlight 30, the floodlight 40, and the closing sheet 10, as shown in FIGS. 2 and 3. It consists of.
In detail, the wellhead unit U has a portal-type frame 61 formed along the front face of a portal-type extension portion 60 which is added to the entrance-side wellhead Ki formed in an inclined shape so as to be a frontal gate type. The closing sheet 10 is wound up and stored in the storage unit 62 disposed in the upper part.

  The gate-type extension 60 is formed in a front-view gate shape with a side wall 60a along the inclined portion of the entrance-side wellhead Ki and a ceiling 60b along the top of the entrance-side wellhead Ki. In addition, guide grooves 61b are formed on the inner side surfaces in the width direction of the column portions 61a on both sides in the width direction of the portal frame 61 so as to serve as a guide when the closing sheet 10 described later is unwound from the storage portion 62 and deployed.

  In addition, when the tunnel T is an open-cut tunnel and the pit is perpendicular to the road surface of the road R, or when the pit is not inclined due to embankment or the like, the portal extension 60 may be omitted. In the same case, the gate-type expansion unit 60 may be installed.

  The closing sheet 10 driven by the driving device 50 has a rectangular shape in front view that can be closed so as to cover the front opening of the front-type portal-type extension part 60, and is a flexible flameproof sheet. As shown in FIG. 3, a road stop display 11 is clearly shown in the center of the front.

  As shown in FIG. 2, the closing sheet 10 is normally housed in the storage unit 62 and wound and stored in a winding bobbin 53 that constitutes the driving device 50 together with the winding motor 54. The take-up motor 54 is mounted on the take-up bobbin 53, and the take-up motor 54 is driven by the control of the control unit 2 to rotate the take-up bobbin 53, and the closing sheet 10 is moved along the guide groove 61b. Can be unwound and wound.

  Note that the storage unit 62 may be divided and installed in one or both column portions 61 a in the width direction of the portal frame 61. In this case, the guide groove 61b is formed at the tip of the wellhead of the ceiling portion 60b, and the closing sheet 10 is drawn out toward the opposite pillar portion 61a or the center of the wellhead and wound on the pillar portion 61a side.

  The ventilation duct 20 is a duct that is arranged on the ceiling 60b of the portal extension 60 and is configured to be able to ventilate the inside and outside of the portal extension 60, and a plurality of ventilation ducts 20 are provided according to the required ventilation amount. In the present embodiment, eight ventilation ducts 20 are provided. As described above, each ventilation duct 20 provided in the ceiling portion 60b has an open state in which ventilation between the inside and outside of the gate-type expansion unit 60 and an interruption state in which ventilation is blocked are controlled by the control unit 2. Switching control to switch is possible. Further, the ventilation amount of the ventilation duct 20 may be controlled by the control unit 2.

  Moreover, the ventilation duct 20 may be arrange | positioned at the side wall part 60a, and should just be the structure which can carry out opening / closing control instead of the closed wellhead. Moreover, it is good also as a structure which substitutes for the ventilation duct 20 by opening and closing the opening / closing sheet | seat 10 slightly.

  The flashlight 30 is a flashlight that is turned on under the control of the control unit 2 and is composed of LEDs. In order to improve the visibility from the passing vehicle C traveling on the road R, a plurality are provided as necessary. In the present embodiment, the storage unit 62 is provided at three locations with a predetermined interval in the width direction.

The floodlight 40 is arranged on the side of the road R on the upstream side in the traveling direction X from the portal extension 60, and is drawn out from the storage 62 and directed to illuminate the deployed closing sheet 10. It is the structure which lights by control of the control part 2.
Note that the floodlight 40 can be omitted when the closing sheet 10 and the traffic stop display 11 are self-luminous using an EL sheet or the like.

  In the normal state, the wellhead unit U that constitutes each element stores the closing sheet 10 in the storage unit 62 and the flashlight 30 and the floodlight 40 are turned off in the normal state as shown in FIG. In the normal state, the ventilation duct 20 may be in an open state in which ventilation is performed as shown in FIG.

  On the other hand, when the occurrence of a fire in the tunnel T, which will be described later, is detected, the control unit 2 turns on the flashlight 30 to enter the tunnel T as shown in FIG. 6)), the winding motor 54 is rotated in the feeding direction, and the closing sheet 10 is developed along the guide groove 61b of the portal frame 61, so that the front portal portal While closing the front opening of the type | mold extension part 60 with the closure sheet | seat 10, the flashlight 30 and the floodlight 40 are lighted.

At this time, the ventilation duct 20 switches between opening and closing according to the traffic jam inside the tunnel T, as will be described in detail later. Further, for example, in the daytime, in the state where the visibility of the traffic stop display 11 clearly shown on the closing sheet 10 is good, the floodlight 40 need not be turned on.
In the tunnel T described above, the wellhead unit U configured in this way can be deployed not only in the entrance-side wellhead Ki but also in the junction lamp Li.

Subsequently, smoke control by the constructed wind speed zeroing system 1 will be described in detail with reference to FIGS.
In order to facilitate the explanation of the smoke control, the confluence lamp Li and the exit lamp Lo are not considered but only the entrance side wellhead Ki and the exit side wellhead Ko are considered. Hereinafter, a situation in which a fire has occurred between the entrance-side wellhead Ki and the exit-side wellhead Ko in a state where the forward direction in the tunnel T is congested will be described.

  In FIGS. 6 and 7, the passing vehicle C enters the tunnel T from the left entry side wellhead Ki, and passes in the traveling direction X (rightward in FIGS. 6 and 7), and the right exit side wellhead Ko. To leave. Of the jet fans 101 that have been conventionally deployed in the tunnel T, the jet fan 101 that is behind (upstream) in the traveling direction from the fire occurrence point F is 101a, and the upper vicinity of the fire occurrence point F (about 500 m before and after). ) Is 101b, and the jet fan 101 in the forward direction (downstream) from the fire occurrence point F is 101c. Further, a traffic vehicle C behind the fire occurrence point F in the traveling direction is referred to as a rear traffic vehicle Ca, and a traffic vehicle C ahead of the fire occurrence point F in the travel direction is referred to as a front traffic vehicle Cb.

  As shown in FIG. 6 (a), when a fire occurs in the tunnel T, the forward traffic vehicle Cb can pass as it is and evacuate from the exit side pit Ko, but the rear traffic vehicle Ca is a fire in the forward direction. It is not possible to go to the traveling direction X while avoiding the occurrence point F, and get off the vehicle and walk away from the entrance side pit Ki or the nearest emergency exit (not shown).

  In such a situation, when the fire detection device 102 detects that a fire has occurred inside the tunnel T, or when the occurrence of a fire is confirmed by an emergency contact of a vehicle passenger who has confirmed the fire, the control unit 2, the flashlight 30 is turned on to alert the following vehicle Cc that is about to enter the tunnel T. Then, as shown in FIG. Is driven to expand the closing sheet 10 to close the entrance-side wellhead Ki. And when the ventilation duct 20 is an open state, closing control is carried out according to this. In this state, the tunnel T is a space in which only the exit side pit Ko is opened, that is, a cylindrical space in which one end is closed. The wind blowing on X stops and the natural inflow of air into the tunnel T is blocked.

  In addition, the control part 2 lights the floodlight 40 according to the condition around the entrance side wellhead Ki with the closure of the closing sheet 10. Specifically, for example, when it is nighttime or when it is difficult to visually recognize the traffic stop display 11 shown in FIG. 3, the floodlight 40 is turned on.

  Further, when it is confirmed by the traffic jam detection device 103 that traffic jam has occurred in the forward direction from the fire occurrence point F, as shown in FIG. 6 (b), it was operated for ventilation in the tunnel. The jet fan 101 is stopped.

  In addition, when performing the wind speed zero control using the conventional jet fan 101, the jet fan 101b near the upper part of the fire occurrence point F is stopped, and the jet fan 101a is constantly considered while taking into consideration the wind speed and the traffic jam in the tunnel T. It is necessary to perform complicated control so as to perform forward smoke exhaust operation and jet fan 101c exhaust smoke operation so that the wind speed is as close to 0 m / s as possible.

  On the other hand, since the wind speed in the tunnel T in one embodiment of the present invention is 0 m / s, it is possible to suppress the smoke S generated by the fire from stagnating in the vicinity of the fire occurrence point F and diffusing into the tunnel T. . By performing such a flue gas control, it is not necessary to perform a conventional wind speed zeroing control using a jet fan, and it is not necessary to install a jet fan for performing the wind speed zeroing control. The wind speed zeroing control can be performed simply and inexpensively.

  While this wind speed zeroing control is being performed, that is, while the smoke S is stagnating in the vicinity of the fire occurrence point F, the smoke S is diffused in the forward passing vehicle Cb in the traveling direction X from the fire occurrence point F. In this state, the vehicle can travel in the traveling direction X, exit from the exit side pit Ko, and evacuate. If the traffic jam in the tunnel T is not resolved and it is difficult to travel in the forward traffic vehicle Cb, you may get off from the forward traffic vehicle Cb and walk to escape from the entrance side pit Ki or the nearest emergency exit.

In addition, since the closure sheet | seat 10 has a flameproof property, even if it is a case where a fire generate | occur | produces in the vicinity of the entrance side wellhead Ki, wind speed zero control can be performed.
Moreover, since the closing sheet 10 has flexibility, it does not obstruct the evacuation of the passenger of the vehicle that has reached the entrance-side wellhead Ki. Further, when an emergency vehicle is about to enter the tunnel T, the closing seat 10 can be controlled to open / close via the control unit 2, or the vehicle is damaged even if it enters the tunnel T in the closed state. And the closed state of the tunnel T can be maintained.

  Furthermore, even if the following vehicle Cc overlooks the closing seat 10 and the road stop display 11, no accident occurs, and it is recognized that there is an abnormality in the tunnel T due to contact with the closing seat 10. be able to.

  However, even in this case, the rear-passing vehicle Ca in the backward direction Y from the fire occurrence point F is congested, so the passenger of the rear-passing vehicle Ca gets off the vehicle and walks to enter the entrance side wellhead Ki or the nearest A considerable amount of time is required to complete the evacuation of the passengers of the rear-passing vehicle Ca.

  When the fire occurrence point F is far from the entrance-side pit Ki or the nearest emergency exit, it takes more time for the passengers of the rear-passing vehicle Ca to evacuate. Even if the smoke velocity S is stagnated near the upper part of the fire occurrence point F by performing the wind speed zeroing control as described above, the smoke S increases and spreads throughout the interior of the tunnel T with the passage of time. There is a possibility that a Ca passenger cannot evacuate or inhale smoke S.

  Therefore, when the control unit 2 detects that the traffic jam due to the forward traffic vehicle Cb in the traveling direction X from the fire occurrence point F has been eliminated by the traffic jam detection device 103 as shown in FIG. The ventilation duct 20 is controlled to open so as to be ventilated so as to be exhausted from the fire occurrence point F toward the exit side pit Ko in the traveling direction X (see FIG. 7B), and the jet fan 101 is used to move forward. Exhaust smoke. Controlling the smoke S so as to go to the exit side wellhead Ko in this way is called forward smoke control.

  By performing the forward smoke control, the smoke S is exhausted in the traveling direction X. Therefore, although the rear direction Y is congested from the fire occurrence point F, it gets off from the rear traffic vehicle Ca and walks to the approach side. When evacuating from the pit Ki, the smoke S does not flow in the backward direction Y of the evacuating tunnel T, and can be evacuated safely.

  Thus, in the wind speed zeroing system 1, the entrance T is closed by the closing sheet 10, so that the tunnel T has a cylindrical shape in which one end is blocked, thereby temporarily blocking the natural inflow of air. Carrying out wind speed zeroing control, opening / closing control of the ventilation duct 20 and operation of the jet fan 101 to perform forward smoke control, and to easily and easily realize safe evacuation of the passenger of the passing vehicle C from the tunnel T. Can do.

  In detail, the closing sheet 10 which closes the wind speed zeroization system 1 which controls the flue gas inside the tunnel T so that the wellhead K of the tunnel T may be covered, the storage part 62 which stores the closing sheet 10, and the stored closure A winding motor 54 that is installed in a predetermined position with respect to the wellhead K to form a closed state, a ventilation state in which the inside and outside of the tunnel T can be ventilated in the vicinity of the wellhead K, and a shut-off state that blocks the ventilation And the control unit 2 for performing the opening / closing switching control of the wellhead unit U and the opening / closing switching control of the ventilation duct 20. It can be performed.

  Specifically, the closing sheet 10 that covers the wellhead K of the tunnel T, the storage portion 62 that stores the closing sheet 10, and the stored closing sheet 10 are installed at predetermined positions with respect to the wellhead K in the wellhead unit U. In the normal state, for example, the closing sheet 10 is stored in the storage unit 62, and when a fire is detected, it is stored in the storage unit 62. Since the closing sheet 10 is installed at a predetermined position by the winding motor 54 and the wellhead K is closed, the flow of air from the wellhead K to the inside of the tunnel T can be cut off, so that the tunnel T can be used without using the jet fan 101. The wind speed inside can be easily set to 0 m / s, and the smoke S can be stagnated near the upper part of the fire occurrence point F.

Moreover, since the ventilation unit 20 is provided with a ventilation duct 20 capable of switching between a ventilation state capable of ventilating the inside and outside of the tunnel T and a blocking state blocking the ventilation in the vicinity of the entrance-side wellhead Ki, the closing sheet 10 is provided. Even when the entrance-side pit Ki is closed, when the ventilation duct 20 is opened and closed, smoke is exhausted in the traveling direction X using the jet fan 101, and when the wind speed is 0 m / s and smoke is stagnated. Can be easily switched.
Thereby, since the closed state of the wellhead K can be maintained irrespective of the method of smoke control, it is possible to prevent the following vehicle Cc from entering the tunnel T where a fire has occurred.

  Furthermore, in this way, by including the control unit 2 that performs the opening / closing switching control of the wellhead unit U and the ventilation duct 20 for controlling the flue gas, according to the internal state of the tunnel T. The exhaust port control can be performed by controlling the wellhead unit U and the ventilation duct 20 with high accuracy. Therefore, compared with the case where smoke emission control is performed using only the jet fan 101 provided in the tunnel T, it is possible to perform reliable smoke emission control with a small and inexpensive facility. Even if a fire occurs, a passenger of the passing vehicle C can evacuate safely.

  In addition, in the smoke emission control using the above-described wellhead unit U and the ventilation duct 20, more efficient smoke emission control can be performed by using it together with the jet fan 101 provided in the tunnel T.

  Further, by providing the wellhead unit U at the entrance-side wellhead Ki of the tunnel T that allows passage in one direction, it is possible to realize smoke emission control that allows a passenger of the passing vehicle C to evacuate safely with a small number of facilities. .

  More specifically, the tunnel T always has an entrance-side wellhead Ki and an exit-side wellhead Ko. However, when the exit-side wellhead Ko is closed, the forward traffic vehicle Cb that travels in the traveling direction X from the fire occurrence point F is transferred to the tunnel T. Will prevent you from evacuating quickly from inside. In addition, it is not possible to alert that a fire has occurred in the tunnel T, and the following vehicle Cc may enter the tunnel T.

  On the other hand, by closing the entrance-side wellhead Ki, the flow of air inside the tunnel T is blocked, and the smoke emission control that allows the passenger of the passing vehicle C to evacuate safely can be realized more reliably. . Furthermore, by closing the entrance-side wellhead Ki, it is possible to prevent a subsequent vehicle Cc from entering the tunnel T where a fire is occurring. Therefore, the passenger of the passing vehicle C evacuating backward in the traveling direction X toward the approach side wellhead Ki and the new succeeding vehicle Cc heading in the traveling direction are mixed, and the passing vehicle C inside the tunnel T There is no risk that the passenger will not be able to evacuate safely.

  In addition, since the control unit 2 performs the closing control based on the fire occurrence information inside the tunnel T, the smoke emission control can be performed more reliably and quickly. Specifically, for example, when the wellhead unit U is closed by an administrator who has confirmed the occurrence of a fire with a fire detector or the like, it takes time from the occurrence of the fire to the closing of the wellhead unit U, but a fire occurs inside the tunnel T. When the control unit 2 performs the closing control of the wellhead unit U based on the information, the wellhead unit U can be quickly closed and the smoke emission control can be performed. The confirmation of the occurrence of the fire may be performed by the manager manually operating the wellhead unit U based on a report from the passenger of the passing vehicle C.

  In addition, based on the traffic jam information inside the tunnel T, the control unit 2 controls the ventilation duct 20 to close when the traffic jam occurs in the traveling direction X from the fire occurrence point F, and the traffic jam occurs in the traveling direction X. If not, the ventilation duct 20 is controlled to be opened, so that more efficient and efficient smoke control can be performed.

  More specifically, the control unit 2 controls the ventilation duct 20 to close when the traffic jam occurs in the traveling direction X from the fire occurrence point F based on the traffic jam information inside the tunnel T, and the traffic jam occurs in the traveling direction X. If no occurs, the ventilation duct 20 is controlled to open. For example, when traffic jam occurs in the traveling direction X inside the tunnel T when the wellhead unit U is controlled to close based on the fire occurrence information, the ventilation duct 20 is controlled to be closed in the tunnel T. The wind speed is set to 0 m / s to prevent the smoke S from diffusing (wind speed zeroing control). Thereafter, the forward passing vehicle Cb in the traveling direction X from the fire occurrence point F exits from the exit side pit Ko and from the fire occurrence point F. By eliminating the traffic congestion in the traveling direction X, the inside of the tunnel T in which the smoke duct S is exhausted in the traveling direction X by using the jet fan 101 by controlling the opening of the ventilation duct 20 (forward smoke control). Appropriate smoke emission control can be performed in accordance with the traffic state.

  In addition, since the closing sheet 10 is composed of a flameproof and flexible sheet, the storage unit 62 that stores the closing sheet 10 in a normal state can be configured compactly. In addition, it is possible to prevent the fire-proof closing sheet 10 from spreading and inadvertently controlling smoke emission.

  In addition, by providing an opening / closing means such as a slider on the flexible closing sheet 10, even when an emergency vehicle enters from the approach side wellhead Ki once closed, it can easily enter. The passenger of the passing vehicle C who is going to evacuate from the entrance side pit Ki can also evacuate easily.

  In addition, since the road closure display 11 indicating that the tunnel T is closed is displayed on the closing seat 10, the passenger of the following vehicle Cc who is about to enter the tunnel T where the entrance-side wellhead Ki is closed is closed. It is possible to clearly indicate that the vehicle is in the closed state display 11, and it is possible to more reliably prevent the entrance-side wellhead Ki from being closed and entering the tunnel T by mistake.

  Further, by providing the floodlight 40 for illuminating the closed seat 10 in the closed state, the passenger of the succeeding vehicle Cc who is about to enter the tunnel T where the entrance-side wellhead Ki is closed is, for example, at night. However, by illuminating the closing sheet 10, it can be clearly shown that it is in a closed state, and erroneous entry into the tunnel T can be more reliably prevented.

  In addition, the portal-type extension 60 is provided so that the end of the entrance is substantially perpendicular to the road with respect to the entrance side entrance Ki of an existing tunnel having an inclined entrance that is inclined in the traveling direction from below to above. By forming the wellhead unit U in the gate-type expansion part 60, it is possible to perform the accurate smoke control as described above at a low cost even with the existing tunnel T having the entrance-side wellhead Ki. it can.

In the correspondence between the configuration of the present invention and the above-described embodiment, the tunnel and the existing tunnel correspond to the tunnel T.
Similarly,
The smoke control system corresponds to the wind speed nulling system 1,
Wellhead and inclined wellhead correspond to wellhead K,
The closing means and the closing sheet correspond to the closing sheet 10,
The storage means corresponds to the storage unit 62,
The installation means corresponds to the winding motor 54,
The wellhead closing device corresponds to the wellhead unit U,
The control device corresponds to the control unit 2,
The forward direction corresponds to the forward direction X,
The explicit part corresponds to the closed road indication 11,
The illumination means corresponds to the floodlight 40,
The expansion unit corresponds to the portal expansion unit 60,
The present invention is not limited only to the configuration of the above-described embodiment, and many embodiments can be obtained.

For example, in the above description, the closing sheet 10 is configured by a flameproof sheet, but may be configured by a shutter, a door, or the like.
Moreover, although the road tunnel which permits the passage of the passing vehicle C has been described, it may be a tunnel T which constitutes a human road, a tunnel T which allows passage of a railway or the like. Furthermore, the concept can include not only a tunnel T that allows passage in one direction but also a tunnel T that allows passage in both directions.

  Further, in the above description, the portal-type extension 60 is added to the entrance-side wellhead Ki with respect to the existing tunnel T and the wellhead unit U is equipped. However, in the case of the newly-installed tunnel T, the entrance-side wellhead Ki is provided. In addition, a portion corresponding to the portal-type expansion unit 60 may be constructed in advance, and the wellhead unit U may be equipped.

  Furthermore, in the above description, the wellhead unit U is installed only at the entrance-side wellhead Ki with respect to the existing tunnel T. However, after the entrance-side wellhead Ki is closed, the wind speed zeroing control in the tunnel T is more reliably continued. For this purpose, the exit side wellhead Ko may also be equipped with a wellhead unit U.

  Furthermore, in the above description, the smoke exhaust control system and the wellhead closing device that perform wind speed zeroing control using only the wellhead unit U are used. However, in order to prevent the diffusion of the smoke S more reliably, it is adopted in the conventional method. It may be used in combination with a wind speed nulling method using a jet fan.

DESCRIPTION OF SYMBOLS 1 ... Wind speed zeroing system 2 ... Control part 10 ... Closure sheet 11 ... Road stop display 20 ... Ventilation duct 40 ... Floodlight 54 ... Winding motor 60 ... Gate type expansion part 62 ... Storage part K ... Wellhead Ki ... Entrance side wellhead X ... Traveling direction T ... Tunnel U ... Wellhead unit

Claims (11)

A smoke control system for controlling the smoke inside the tunnel,
Closing means for covering the tunnel entrance, and storage means for storing the closing means;
The stored closing means is installed at a predetermined position with respect to the wellhead to form a closed state, a ventilation state in which the inside and outside of the tunnel can be ventilated in the vicinity of the wellhead, and a shutoff that blocks ventilation. Wellhead closing device configured with ventilation means that can be switched between states,
A smoke emission control system comprising: a control device that performs closing control of the wellhead closing device and opening / closing switching control of the ventilation means. The tunnel is configured to allow one-way traffic,
The smoke emission control system according to claim 1, wherein the wellhead closing device is provided at an entrance-side wellhead to the inside of the tunnel. The control device;
The smoke emission control system according to claim 2, wherein the closing control is performed based on fire occurrence information inside the tunnel. The control device;
Based on the traffic jam information inside the tunnel, if there is a traffic jam ahead of the direction of travel inside the tunnel from the location where the fire occurred, close the ventilation means, if there is no traffic jam ahead of the direction of travel The smoke emission control system according to claim 3, wherein the ventilation means is controlled to be opened. The closure means;
The smoke emission control system according to any one of claims 1 to 4, wherein the smoke emission control system is constituted by a closing sheet having flameproofness and flexibility. In the closing means,
The smoke emission control system according to any one of claims 1 to 5, further comprising an explicit part that clearly indicates that the tunnel is closed in the closed state. The smoke control system according to any one of claims 1 to 6, further comprising an illumination unit that illuminates the closing unit in the closed state. The tunnel is an existing tunnel having an inclined wellhead where the wellhead is inclined in the tunnel axial direction from below to above,
With respect to the inclined wellhead, forming an additional portion to be added so that the end of the wellhead is substantially vertical,
The smoke emission control system according to any one of claims 1 to 7, wherein the extension part is provided with the wellhead closing device. A tunnel closing device that shuts down the natural wind inside the tunnel and closes the wind speed in the tunnel by closing the tunnel entrance.
A closing means for covering the wellhead so as to cover the wellhead;
Storage means for storing the closure means;
A wellhead closing device comprising: the stored closing means installed at a predetermined position with respect to the wellhead to form a closed state. The closure means;
The wellhead closing device according to claim 9, which is constituted by a closing sheet having flame resistance and flexibility. In the closing means,
The wellhead closing device according to claim 9 or 10, further comprising an explicit part that clearly indicates that the tunnel is closed in the closed state.

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