CN113153406A - Tunnel system and tunnel smoke discharge control method - Google Patents

Abstract

The embodiment of the application provides a tunnel system and a tunnel smoke exhaust control method, wherein the tunnel system comprises: a traffic hole and a smoke exhaust channel separated by a partition wall; the partition wall is provided with a smoke outlet which is respectively communicated with the travelling crane tunnel and the smoke exhaust channel, and the smoke outlet is provided with a normally closed exhaust valve; a plurality of smoke control partition devices are arranged in the travelling tunnel, the smoke control partition devices are arranged at intervals along the length direction of the travelling tunnel, and at least one smoke exhaust port is arranged between every two adjacent smoke control partition devices; the smoke control partition device is accommodated on the wall of the driving tunnel when the driving tunnel is in a normal passing state; when a fire disaster happens in the driving tunnel, the two smoke control partition devices close to the ignition point are unfolded to partition the driving tunnel. The tunnel system and the tunnel smoke exhaust control method provided by the embodiment of the application can reduce the diffusion of smoke in the driving tunnel and accelerate the discharge of the smoke from the smoke exhaust channel.

Description

Tunnel system and tunnel smoke discharge control method

Technical Field

The application relates to a tunnel ventilation and smoke exhaust technology, in particular to a tunnel system and a tunnel smoke exhaust control method.

Background

In the construction process of the tunnel, a smoke exhaust channel is usually arranged in the tunnel, and smoke exhaust vertical shafts are arranged along the tunnel in a segmented mode to perform longitudinal smoke exhaust or a key smoke exhaust system is adopted to solve the problem of fire protection and smoke exhaust. The distance between the two smoke exhaust vertical shafts is used as a smoke exhaust section for longitudinal smoke exhaust, and for a highway tunnel, the length of the smoke exhaust section for longitudinal smoke exhaust does not exceed 5 km; for the urban traffic tunnel, the longitudinal smoke exhaust section needs not to exceed 3 km. The key smoke exhaust system is characterized in that a smoke exhaust port is formed in the side face or the top pipe gallery of the tunnel driving tunnel, smoke exhaust fans are arranged in equipment rooms at two ends of the tunnel, the key smoke exhaust system is monitored and started through an automatic fire detector when a fire disaster occurs, the key smoke exhaust system is not limited by a smoke exhaust section, and a smoke exhaust valve near a fire point is opened where the fire disaster occurs so that smoke can be exhausted through a smoke exhaust channel.

The tunnel smoke discharge section which can be implemented in certain regions cannot meet the requirements under the restriction of geographical environment conditions, and only a key smoke discharge system can be adopted. However, when a fire disaster occurs in the driving tunnel, the smoke can stretch towards the driving direction under the influence of the traffic ventilation force and the hot pressing of the smoke, so that the distance between the smoke exhaust point of the key system and the smoke accumulation area is large, the smoke cannot be rapidly discharged, and the evacuation requirement of people is difficult to meet. The specific problems are as follows:

(1) traffic ventilation reduces smoke extraction efficiency. When a fire disaster happens in the driving tunnel, no matter the normal operation of traffic or the blockage, the traffic ventilation force can be generated, the traffic ventilation force drives smoke to stretch towards the driving direction, a hot smoke layer can be disturbed, a smoke outlet sucks a large amount of air, the smoke exhaust efficiency is low or even the smoke exhaust can not be removed, the smoke is difficult to control in the range of 300m required by the specification, and a key smoke exhaust system is almost paralyzed.

(2) In order to solve the above problems, the power of the smoke exhaust fan needs to be increased. Because the large size of the high-power smoke exhaust fan needs to be increased, the area of a machine room needs to be increased, and further the safety fee of civil engineering and electromechanical construction is increased.

(3) In order to solve the problems, the smoke exhaust channel can be widened and heightened, so that the cross section of the smoke exhaust channel is enlarged, and further the smoke exhaust amount is increased, but the cross section of the tunnel is enlarged, and billions of civil engineering security charges are increased.

(4) The alarm and monitoring method is unreasonable. The smoke moves forwards quickly, a fire alarm system must be accurately monitored, the smoke accumulation area is judged instead of the ignition point area, a method of adding an automatic fire detector is adopted in engineering, mechanical and electrical construction safety cost is increased, operation and maintenance and emergency management difficulty are high, and the smoke control condition of an ignition area is still poor when a fire working condition is executed.

Disclosure of Invention

In order to solve one of the above technical drawbacks, an embodiment of the present application provides a tunnel system and a tunnel smoke discharge control method.

According to a first aspect of embodiments of the present application, there is provided a tunnel system, including: a traffic hole and a smoke exhaust channel separated by a partition wall; the partition wall is provided with a smoke outlet which is respectively communicated with the travelling crane tunnel and the smoke exhaust channel, and the smoke outlet is provided with a normally closed exhaust valve;

a plurality of smoke control partition devices are arranged in the travelling tunnel, the smoke control partition devices are arranged at intervals along the length direction of the travelling tunnel, and at least one smoke exhaust port is arranged between every two adjacent smoke control partition devices; the smoke control partition device is accommodated on the wall of the driving tunnel when the driving tunnel is in a normal passing state; when a fire disaster happens in the driving tunnel, the two smoke control partition devices close to the ignition point are unfolded to partition the driving tunnel.

According to a second aspect of the embodiments of the present application, there is provided a tunnel smoke discharge control method applied to the tunnel system, including:

when fire information is acquired, the fire information comprises a position mark of a fire in a tunnel;

controlling two smoke control partition devices adjacent to the area where the position mark is located to be unfolded according to the position mark so as to partition the driving tunnel;

and controlling the normally closed exhaust valve close to the area where the position mark is located to open for exhausting according to the position mark.

According to the technical scheme provided by the embodiment of the application, the internal space of the tunnel system is divided into the driving tunnel and the smoke exhaust channel through the partition wall, the partition wall is provided with a smoke exhaust port which is respectively communicated with the driving tunnel and the smoke exhaust channel, and the smoke exhaust port is provided with a normally closed exhaust valve; a plurality of smoke control partition devices are arranged in the travelling crane tunnel, the smoke control partition devices are arranged at intervals along the length direction of the travelling crane tunnel, and at least one smoke exhaust port is arranged between every two adjacent smoke control partition devices; the smoke control partition device is contained on the wall of the driving tunnel when the driving tunnel is in a normal passing state; when a fire disaster occurs in the driving tunnel, the two smoke control partition devices close to the fire point are unfolded to partition the driving tunnel, so that smoke is concentrated in the area between the two unfolded smoke control partition devices, the diffusion in the driving tunnel is reduced, and the smoke is quickly discharged through the smoke discharge channel.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:

fig. 1 is a schematic structural diagram of a tunnel system according to an embodiment of the present application;

FIG. 2 is a cross-sectional view of a tunnel system provided by an embodiment of the present application;

FIG. 3 is a cross-sectional view of another tunnel system provided by an embodiment of the present application;

FIG. 4 is a schematic structural view of a smoke control partition device in a tunnel system according to an embodiment of the present disclosure in a deployed state;

fig. 5 is a left side view of fig. 4.

Reference numerals:

11-driving holes; 12-a smoke evacuation channel; 13-smoke exhausting air shaft; 14-a smoke exhaust fan; 15-air valve; 16-a cable channel; 17-secure channel;

2-normally closing a smoke exhaust valve;

3-smoke control partition device; 31-a drum motor; 32-a motor support; 33-concrete structural panels; 34-an expansion bolt; 35-smoke barrier cloth; 36-counterweight base; 37-a control box; 38-cable wires; 39-a button;

41-wind speed and wind quantity sensor; 42-carbon dioxide sensor.

Detailed Description

In order to make the technical solutions and advantages of the embodiments of the present application more apparent, the following further detailed description of the exemplary embodiments of the present application with reference to the accompanying drawings makes it clear that the described embodiments are only a part of the embodiments of the present application, and are not exhaustive of all embodiments. It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.

Fig. 1 is a schematic structural diagram of a tunnel system according to an embodiment of the present application. As shown in fig. 1, the present embodiment provides a tunnel system, an internal space of the tunnel system is partitioned into a traffic tunnel 11 and a smoke evacuation channel 12 by partition walls, and both the traffic tunnel 11 and the smoke evacuation channel 12 extend in a length direction of the tunnel. The partition wall is provided with a smoke outlet which is respectively communicated with the travelling crane tunnel 11 and the smoke exhaust channel 12, and the smoke exhaust outlet is provided with a normally closed smoke exhaust valve 2. When the tunnel normally runs, the normally closed smoke exhaust valve 2 is in a closed state, and a running tunnel 11 and a smoke exhaust channel 12 are isolated; when a fire breaks out in the driving tunnel 11, the normally closed smoke exhaust valve 2 is opened, so that smoke in the driving tunnel 11 enters the smoke exhaust channel 12 from the smoke exhaust port.

The two ends of the tunnel are respectively provided with a smoke exhaust air shaft 13, and a smoke exhaust fan 14 and an air valve 15 are arranged in the tunnel. When the smoke exhaust fan 14 and the air valve 15 are opened to form negative pressure in the smoke exhaust passage 12, smoke flows along the smoke exhaust passage 12 and is exhausted from the smoke exhaust air shaft 13.

A plurality of smoke control partition devices 3 are arranged in the driving hole 11, the smoke control partition devices 3 are arranged at intervals along the length direction of the driving hole 11, and at least one smoke exhaust port is arranged between every two adjacent smoke control partition devices 3. When the driving tunnel 11 is in a normal passing state, the smoke control partition device 3 is accommodated on the wall of the driving tunnel 11; when a fire breaks out in the driving tunnel 11, the two smoke control partition devices 3 close to the fire point expand to partition the driving tunnel 11, so that smoke is concentrated in the area between the two expanded smoke control partition devices 3, outward diffusion is reduced, the normally closed smoke exhaust valve 2 between the two smoke control partition devices 3, the smoke exhaust fan 14 at the end part of the tunnel and the air valve 15 are opened, and the smoke in the area is exhausted from the smoke exhaust channel 12 as soon as possible.

According to the technical scheme provided by the embodiment, the internal space of the tunnel system is divided into the driving tunnel and the smoke exhaust channel through the partition wall, the partition wall is provided with the smoke exhaust port which is respectively communicated with the driving tunnel and the smoke exhaust channel, and the smoke exhaust port is provided with the normally closed exhaust valve; a plurality of smoke control partition devices are arranged in the travelling crane tunnel, the smoke control partition devices are arranged at intervals along the length direction of the travelling crane tunnel, and at least one smoke exhaust port is arranged between every two adjacent smoke control partition devices; the smoke control partition device is contained on the wall of the driving tunnel when the driving tunnel is in a normal passing state; when a fire breaks out in the driving tunnel, the two smoke control partition devices close to the fire point are unfolded to partition the driving tunnel, so that smoke is concentrated in the area between the two unfolded smoke control partition devices, outward diffusion is reduced, and the smoke is quickly discharged through the smoke discharge channel.

The smoke control partition device provided by the embodiment can be applied to tunnels in various forms. For example: fig. 2 is a cross-sectional view of a tunnel system provided in an embodiment of the present application. As shown in fig. 2, for a rectangular tunnel, the number of the traffic holes 11 is two, and the traffic holes are located on both sides of the smoke evacuation channel 12. A cable channel 16 and a safety channel 17 are sequentially arranged below the smoke exhaust channel 12, a safety door is arranged on the wall between the safety channel 17 and the driving hole 11, and personnel can enter the safety channel 17 from the safety door to evacuate. The smoke outlet is arranged on the vertical walls at the two sides of the smoke exhaust channel 12, and smoke in the travelling crane tunnel 11 can enter the smoke exhaust channel 12 from the smoke outlet at the side surface.

Fig. 3 is a cross-sectional view of another tunnel system provided in an embodiment of the present application. As shown in fig. 3, for a circular tunnel, the number of the traffic holes 11 is one, and is located below the smoke evacuation channel 12. The smoke outlet is arranged on the transverse wall below the smoke exhaust channel 12, and smoke in the travelling crane tunnel 11 can upwards enter the smoke exhaust channel 12 through the smoke outlet. A safety channel, a cable channel, a drainage channel and the like can be arranged below the driving tunnel 11.

On the basis of the above technical solution, the present embodiment provides an implementation manner of the smoke control partition device 3:

the smoking control partition device comprises: driver and keep off cigarette mechanism. Wherein the driver is fixed on the wall of the driving hole 11, one end of the smoke blocking mechanism is connected with the driver, and the other end can be unfolded or retracted relative to the driver. The shape and the size of the smoke blocking mechanism can be set according to the shape and the size of the cross section of the driving hole 11, the shape and the size are kept consistent as much as possible, and smoke leakage can be reduced.

The smoke blocking mechanism can be arranged according to the structure of the telescopic door, and a smoke blocking plate is arranged on one side of the telescopic door. Alternatively, the following scheme may be adopted: the driver can be arranged on the wall at the top of the driving hole 11 to enable the smoke blocking mechanism to be unfolded downwards; or on the walls on the left and right sides of the driving opening 11 to cause the smoke barrier mechanism to be deployed leftward or rightward.

Fig. 4 is a schematic structural view of a smoke control partition device in a tunnel system provided in an embodiment of the present application in a deployed state, and fig. 5 is a left side view of fig. 4. As shown in fig. 4 and 5, the smoke control partition device comprises: the device comprises a driver and a smoke blocking mechanism, wherein the driver is a roller motor 31, and a shell of the roller motor 31 is fixed on the wall at the top of the driving hole 11 through a motor bracket 32. When the top wall is a concrete structural plate 33, the motor bracket 32 is fixed to the concrete structural plate 33 by using the expansion bolts 34.

The smoke blocking mechanism comprises smoke blocking cloth 35 and a counterweight base 36. The top end of the smoke barrier 35 is connected with the drum motor 31. When the drum motor 31 rotates in a first direction (for example, forward rotation), the smoke barrier cloth 35 is wound into the drum motor 31 for storage; when the drum motor 31 rotates in a second direction (e.g., reverse rotation), the smoke barrier cloth 35 protrudes from the drum motor 31 and drops downward. Counterweight base 36 is connected to the bottom that keeps off cigarette cloth 35, and counterweight base 36 has certain weight, can drive and keep off cigarette cloth 35 and hang down and reach tunnel ground.

The smoke barrier 35 may be made of a fireproof material or a heat-resistant material, or may be made of a common knitted fabric and coated with fireproof heat-resistant material layers on both side surfaces thereof, so that it has a certain fireproof capability and a high temperature resistance.

As shown in fig. 5, the counterweight base 36 has a strip-shaped structure, and the length of the counterweight base matches with the width of the smoke barrier 35. The counterweight base 36 includes a main body portion extending in the horizontal direction and a connecting portion provided on the top surface of the main body portion in a protruding manner, and the connecting portion is connected to the smoke barrier 35. The cross-sectional shape of the weight base 36 is T-shaped.

Further, the smoke control partition device further comprises: control box 37, cable 38 and button 39. The control box 37 is arranged on the wall of the driving hole 11, and a power supply and electric control equipment are arranged in the control box 37, wherein the electric control equipment comprises a controller, a circuit breaker, a relay, a fuse, a wiring terminal and the like. The button 39 is provided on the control box 37 and electrically connected to the electric control device. One end of the cable 38 is connected to the electric control device, and the other end is connected to the drum motor 31.

When the button 39 is disposed at a distance from the control box 37, the button 39 and the control box 37 may be connected by a cable 38. The button 39 is manually operable, and a person located in the driving tunnel 11 can manually press the button 39 to activate the smoke-control barrier to deploy.

Or, the electric control device further includes: and the communication module is used for carrying out data communication with the tunnel fire alarm system, and the tunnel fire alarm system controls the smoke control partition device to be started.

Further, an air speed and air volume sensor 41 is used for detecting the air speed and the air volume in the driving tunnel 11, and the air speed and the air volume sensor 41 is arranged on the wall on the periphery of the normally closed exhaust valve 2. The carbon dioxide sensor 42 can also be used for detecting the content of carbon dioxide in the driving tunnel 11, and the carbon dioxide sensor 42 is arranged on the wall on the periphery of the normally closed exhaust valve 2.

For the rectangular tunnel shown in fig. 2, the wind speed and wind quantity sensor 41 and the carbon dioxide sensor 42 can be arranged on the vertical walls at the two sides of the smoke exhaust channel 12 and at one side of the driving tunnel 11.

For the circular tunnel shown in fig. 3, the wind speed and wind quantity sensor 41 and the carbon dioxide sensor 42 can be arranged on the transverse wall below the smoke exhaust channel 12 and on one side of the driving tunnel 11.

The wind speed and wind volume sensor 41, the carbon dioxide sensor 42 and the normally closed exhaust valve 2 are respectively and electrically connected with a tunnel fire alarm system. The tunnel fire alarm system processes and analyzes the data detected by the wind speed and wind volume sensor 41 and the carbon dioxide sensor 42, and controls the normally closed exhaust valve 2 and the smoke control partition device 3 to start to discharge smoke in time according to the analysis result. For example: when the wind speed and the wind volume are too large, the diffusion of the flue gas can be accelerated; or when the carbon dioxide concentration is too high, the life safety of personnel can be endangered, the power of the smoke exhaust fan 14 needs to be increased, and a plurality of normally closed smoke exhaust valves 2 on the periphery are also opened to increase the smoke exhaust speed.

Further, still be provided with the smoke detector in the tunnel, specifically include: a dual-wavelength flame automatic detector and a distributed temperature-sensing optical cable detector. The dual-wavelength flame automatic detector is arranged from the entrance of the tunnel and is arranged opposite to the fire hydrant in the tunnel at the same position. The double-wavelength flame automatic detectors are sequentially arranged on the wall of the traffic hole 11 at intervals along the length direction of the traffic hole, and the distance between every two adjacent double-wavelength flame automatic detectors is 40-50 m.

The distributed temperature-sensing optical cable detector is laid on the top of the tunnel at least from 10m away from the tunnel portal, extends along the length direction of the tunnel, and is equivalent to that the distance between the end part of the distributed temperature-sensing optical cable detector and the tunnel portal is less than or equal to 10 m. 2 optical cables are arranged at the top of each driving hole 11 of the main line tunnel, 1 optical cable is arranged at the top of the driving hole 11 of the ramp tunnel, 1 optical cable is arranged at the top of a longitudinal cable channel of the main line tunnel, 1 optical cable is arranged at the top of a longitudinal overhaul channel of the main line tunnel, and 1 distributed temperature-sensitive optical cable detector is respectively laid on 10kv high-voltage cable slot boxes on two sides of the cable channel and used for measuring the temperature of the cables.

On the basis of the technical scheme, the smoke control partition devices 3 are arranged at equal intervals along the length direction of the driving tunnel 11, and the horizontal distance between every two connected smoke control partition devices 3 is 300-600 m. The smoke blocking vertical wall is linked with the smoke detector, and when the smoke detector gives an alarm, the smoke control partition device 3 can automatically descend to a smoke blocking working position. Meanwhile, the smoke control partition device 3 can also descend to a smoke blocking working position after receiving a control signal of the tunnel fire alarm system.

The normally closed smoke exhaust valve 2 is an electric valve and is arranged on a partition wall between the smoke exhaust duct 12 and the driving tunnel 11, a hole for mounting the normally closed smoke exhaust valve 2 is reserved on the partition wall to serve as a smoke exhaust port, the space on the valve body non-actuator side of the normally closed smoke exhaust valve 2 is not less than 0.2m, and the space on the valve body actuator side is not less than 0.6 m. The smoke outlets are arranged at equal intervals along the length direction of the smoke discharge flue 12, the horizontal distance between every two adjacent smoke outlets is 60-150 m, and the number and the size of the single group of smoke outlets are determined according to the requirements of smoke discharge amount, smoke discharge air speed and structural strength. The normally closed smoke exhaust valve 2 is in linkage control with a tunnel fire alarm system and is normally closed, and is opened in case of fire. The air speed and air volume sensor 41 and the carbon dioxide sensor 42 are arranged at the normally closed smoke exhaust valve 2, and the air speed and air volume sensor 41 and the carbon dioxide sensor 42 are fixed on a wall body at the valve body.

The smoke exhaust channel 12 is arranged on the side part or the top part of the driving tunnel 11 and is separated from the driving tunnel 11 by a common reinforced concrete structural plate to form a civil engineering smoke exhaust channel, and the civil engineering smoke exhaust channel and the main structure of the tunnel are integrally cast or secondarily cast according to the construction requirements. The tunnel is arranged along the length direction of the tunnel, the tunnel is connected into smoke exhaust fan rooms at two ends of the tunnel through a smoke exhaust channel 12, the wind speed of the smoke exhaust channel 12 is 8-15 m/s in case of fire, the sectional area of the smoke exhaust channel 12 is determined by smoke exhaust amount, smoke exhaust efficiency and wind speed, and the length of the smoke exhaust channel 12 is about 5-25 km.

The fume extractor of air shaft end includes: the device comprises a smoke exhaust fan, a linkage electric combined air valve, a flexible connection, a diffusion cylinder, a pitch pipe, a silencer and a smoke exhaust air shaft. The tunnel smoke exhaust fan is arranged in the tunnel machine room and is in one-to-one correspondence with the interlocking electric combined air valves, and the tunnel smoke exhaust fan is connected with the silencer through a flexible connection, a diffusion cylinder and a top-round and bottom-square reducer pipe.

The tunnel smoke exhaust fan is arranged in a tunnel equipment room, and the one-way constant-speed fan resists high temperature of 280 ℃ for 1 h. The tunnel smoke exhaust fan is connected with the interlocking mechanical air valve through a cold-rolled steel plate with the thickness not less than 2mm, a diffusion cylinder, a silencer, a flexible connection and the like are arranged in the front of and behind the tunnel smoke exhaust fan, the air outlet end of the tunnel smoke exhaust fan is connected with a smoke exhaust air shaft, and the air inlet end of the tunnel smoke exhaust fan is connected with a smoke exhaust channel 12. According to the smoke discharge amount, each equipment room can be provided with not less than 2 tunnel smoke discharge fans which are connected in parallel or mutually standby. Normally closed, the power frequency is started during fire, the opening mode is determined according to the position of a fire point, and smoke is rapidly discharged.

The smoke control partition device 3, the tunnel smoke exhaust fan 14 and the normally closed smoke exhaust valve 2 are all in control connection with a central control room of a tunnel fire alarm system, the central control room determines the fire position according to a fire position automatic detector installed at the top of a tunnel, the fire position is displayed on a monitoring screen of the tunnel central control room after alarm, and the smoke exhaust system enters a preset fire operation mode after manual confirmation.

The ventilation and smoke exhaust system for tunnel segmented smoke control is in the stage of evacuating the drivers after a fire occurs, smoke is exhausted in a key smoke exhaust mode, a large number of smoke areas near an ignition point are detected according to a fire automatic detector, the smoke areas are displayed on a monitoring screen of a tunnel central control room after alarm, two smoke control partition devices 3 at the upstream and the downstream closest to the alarm point are started after manual confirmation, the smoke control partition devices 3 are lowered to the height of 2.5-3.5 m, smoke is controlled between the two smoke control partition devices 3, and the influence of traffic ventilation force is reduced. And simultaneously, the corresponding tunnel smoke exhaust fans 14 are opened according to different sections, all normally closed smoke exhaust valves 2 between two smoke control partition devices 3 are opened, smoke enters the smoke exhaust channel 12 from the normally closed smoke exhaust valves 2, and the smoke in the smoke exhaust channel 12 is exhausted to the atmosphere by the smoke exhaust device at the air shaft end.

The smoke control partition device 3, the tunnel smoke exhaust fan 14 and the normally closed smoke exhaust valve 2 are controlled and connected by a central control room. The smoke exhaust valve smoke discharge amount collected by the wind speed and air quantity sensor 41 and the carbon dioxide sensor 42 and the carbon dioxide concentration of discharged smoke are transmitted, analyzed and stored through a communication technology and an internet of things cloud deck, sensor parameters are displayed through internet WEB pages, data are measured, the application of an internet of things and an ultra-long tunnel comprehensive fire platform is realized, the starting condition of the smoke exhaust valve at a fire point can be found quickly, efficiently and accurately, the smoke exhaust valve is started to discharge smoke, the reliability of a lateral key smoke exhaust system is greatly increased, and the manual inspection efficiency is reduced.

Compared with the traditional scheme, the scheme provided by the embodiment of the application has the following advantages:

(1) the smoke control partition device solves the problem that when a fire disaster occurs in a driving tunnel, smoke is spread due to traffic ventilation generated by vehicle driving, and the smoke is controlled in two smoke control partition devices near the fire disaster to form a smoke control partition function, so that a smoke exhaust system is more reliable.

(2) The hot smoke layer is prevented from being disturbed, the smoke exhaust port sucks a large amount of air to ensure that the smoke exhaust efficiency is low, the smoke exhaust efficiency of the smoke exhaust port is improved by 20-40%, the method of increasing the smoke exhaust amount of equipment, the size of a smoke exhaust pipeline and a smoke exhaust machine room due to the reduction of the smoke exhaust efficiency is avoided, and the civil engineering and electromechanical investment is greatly reduced.

(3) The problem of fire alarm system be difficult to accurate judgement fast migration flue gas pile up is solved, avoid increaseing electromechanical construction safety charge such as conflagration automatic detector, reduce the operation and maintenance and the emergency management degree of difficulty.

(4) A wind speed and air quantity sensor and a carbon dioxide sensor are additionally arranged at the position of an electric smoke exhaust valve installation wall body, and data such as smoke exhaust amount and smoke exhaust efficiency of a smoke exhaust port started in a fire point area are remotely monitored, so that the problem that the smoke control condition of an ignition area is lack of monitoring and monitoring is solved.

Further, this embodiment also provides a tunnel smoke discharge control method using the tunnel system, which may include a smoke control partition device³The controller in (2) is used for executing, and specifically comprises the following steps:

the method comprises the following steps: when the fire information is acquired, the fire information contains a position mark of a fire in the tunnel.

The fire information can be sent out by a smoke detector in the tunnel or a tunnel fire alarm system. A plurality of smoke detectors are arranged in the tunnel, and each smoke detector has a unique identifier; the identity of the smoke detector producing the alarm signal serves as the identity of the location of the fire.

Step two: and controlling two smoke control partition devices adjacent to the area where the position mark is located to be unfolded according to the position mark so as to partition the traffic hole.

Step three: and controlling the normally closed air exhaust valve close to the area where the position mark is located to exhaust air according to the position mark.

The sequence of the second step and the third step can be interchanged.

The smoke control method provided by the embodiment can avoid smoke diffusion and exhaust the smoke through the smoke exhaust channel as soon as possible.

In the description of the present application, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed in a particular orientation, and be operated, and thus should not be considered as limiting the present application.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral parts; can be mechanically connected, electrically connected or can communicate with each other; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

While the preferred embodiments of the present application have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all alterations and modifications as fall within the scope of the application.

It will be apparent to those skilled in the art that various changes and modifications may be made in the present application without departing from the spirit and scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is intended to include such modifications and variations as well.

Claims (10)

1. A tunnel system, comprising: a traffic hole and a smoke exhaust channel separated by a partition wall; the partition wall is provided with a smoke outlet which is respectively communicated with the travelling crane tunnel and the smoke exhaust channel, and the smoke outlet is provided with a normally closed exhaust valve;

a plurality of smoke control partition devices are arranged in the travelling tunnel, the smoke control partition devices are arranged at intervals along the length direction of the travelling tunnel, and at least one smoke exhaust port is arranged between every two adjacent smoke control partition devices; the smoke control partition device is accommodated on the wall of the driving tunnel when the driving tunnel is in a normal passing state; when a fire disaster happens in the driving tunnel, the two smoke control partition devices close to the ignition point are unfolded to partition the driving tunnel.

2. The tunnel system of claim 1, wherein the smoke control partition comprises:

a driver fixed to a wall of the driving tunnel;

and the smoke blocking mechanism is connected with the driver at one end and can be unfolded or retracted relative to the driver at the other end.

3. The tunnel system of claim 2, wherein the driver is a drum motor, and a housing of the drum motor is fixed on a wall at the top of the driving tunnel through a motor bracket;

keep off cigarette mechanism includes:

the top end of the smoke blocking cloth is connected with the roller motor; when the drum motor rotates along a first direction, the smoke blocking cloth is wound into the drum motor for storage; when the drum motor rotates along the second direction, the smoke blocking cloth extends out of the drum motor and falls downwards;

and the counterweight base is connected to the bottom end of the smoke blocking cloth.

4. The tunnel system of claim 3, wherein the smoke control partition further comprises:

the control box is arranged on the wall of the driving hole;

one end of the cable is connected to the control box, and the other end of the cable is connected with the roller motor;

and the button is arranged on the control box and is electrically connected with the electric control equipment in the control box.

5. The tunnel system of any one of claims 1-4, wherein the horizontal distance between two adjacent smoke-control partitions is 300m-600 m; the horizontal distance between two adjacent smoke outlets is 60m-150 m.

6. The tunnel system of claim 1, further comprising:

the air speed and air volume sensor is arranged on the wall at the periphery of the normally closed exhaust valve; and/or

The carbon dioxide sensor is arranged on the wall at the periphery of the normally closed exhaust valve;

and the wind speed and wind quantity sensor, the carbon dioxide sensor and the normally closed exhaust valve are respectively and electrically connected with a tunnel fire alarm system.

7. The tunnel system of claim 1 or 6, further comprising:

a dual wavelength flame automatic detector; the double-wavelength flame automatic detectors are sequentially arranged on the wall of the traffic hole at intervals along the length direction of the traffic hole, and the distance between every two adjacent double-wavelength flame automatic detectors is 40-50 m;

the distributed temperature-sensing optical cable detector is arranged in a high-voltage cable groove box of the cable channel; the distributed temperature-sensing optical cable detector extends along the length direction of the tunnel; the distance between the end of the distributed temperature-sensing optical cable detector and the tunnel portal is less than or equal to 10 m.

8. The tunnel system of claim 6, wherein the number of said driving tunnels is two, located on both sides of the smoke evacuation channel; a cable channel and a safety channel are sequentially arranged below the smoke exhaust channel; a safety door is arranged on the wall between the safety passage and the driving tunnel;

the tunnel is a rectangular tunnel, and the smoke outlet is arranged on the vertical walls at the two sides of the smoke exhaust channel; and the wind speed and wind volume sensor and the carbon dioxide sensor are respectively arranged on the vertical wall.

9. The tunnel system of claim 6, wherein the number of said traffic holes is one, located below the smoke evacuation channel;

the tunnel is a circular tunnel, and the smoke outlet is arranged on a transverse wall below the smoke exhaust channel; and the wind speed and wind volume sensor and the carbon dioxide sensor are respectively arranged on the transverse wall.

10. A tunnel smoke discharge control method applied to the tunnel system according to any one of claims 1 to 9, comprising:

when fire information is acquired, the fire information comprises a position mark of a fire in a tunnel;

controlling two smoke control partition devices adjacent to the area where the position mark is located to be unfolded according to the position mark so as to partition the driving tunnel;

and controlling the normally closed exhaust valve close to the area where the position mark is located to open for exhausting according to the position mark.

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