Intelligent efficient evacuation system based on tunnel parallel guide ventilation and smoke exhaust mode

Abstract

The utility model belongs to the field of tunnel ventilation and smoke exhaust, and discloses an intelligent efficient evacuation system based on a tunnel flat guide ventilation and smoke exhaust mode, which comprises a main channel, a transverse channel is adaptively arranged on one side of the main channel, a flat guide is adaptively arranged at the other end of the transverse channel, lifting devices are uniformly arranged on two sides of the inner wall of the flat guide, and a partition plate is fixedly arranged at one end above the lifting devices. One end of the inner wall of the transverse channel is fixedly provided with a layering plate, the transverse channel is also internally provided with a lifting device and a sealing device in a matched mode, one end of the inner wall of the transverse channel is fixedly provided with the layering plate, one side of the layering plate is fixedly provided with a smoke prevention device, air doors are symmetrically arranged below the layering plate, and the inner wall of the layering plate is provided with an air exhaust device. Moving devices are symmetrically arranged below the layering plate; the utility model solves the problem that fan parameters need to be adjusted under different conditions when a fire disaster occurs in the prior art, and is suitable for tunnel ventilation and smoke exhaust.

Description

Technical Field

[0001] The utility model relates to the technical field of tunnel ventilation and smoke exhaust, in particular to an intelligent and efficient evacuation system based on the ventilation and smoke exhaust mode of a tunnel parallel heading. Background Technique

[0002] Tunnel ventilation and smoke exhaust refer to the process of discharging smoke, waste gas and pollutants out of the tunnel through a reasonable ventilation system to ensure the air quality and safety in the tunnel. In the tunnel, vehicle exhaust, combustible substances and other emissions will generate a large amount of smoke and harmful gases. If these substances accumulate and concentrate in the tunnel, it will pose a serious threat to the safety of personnel and vehicles.

[0003] The main purposes of the smoke exhaust system are: maintaining the air quality in the tunnel: by removing smoke and pollutants, maintaining the fresh air in the tunnel, and ensuring the comfort and safety of drivers and passengers.

[0004] Reducing the spread of fire and smoke: In case of a fire, the smoke exhaust system can effectively discharge the smoke out of the tunnel, reduce the speed of fire spread, and increase the evacuation time window.

[0005] Providing escape conditions: The smoke exhaust system can provide clear vision and a relatively clean air environment for personnel evacuation, improving the escape efficiency and safety.

[0006] However, at present, as the length of national and provincial highway tunnels develops towards the 10-km level, the spread length of smoke in the main tunnel during a fire may exceed 5 km, far exceeding the requirement of not more than 3 km specified in the code, seriously threatening the safety of personnel, vehicles and equipment in long-distance tunnels. Setting up a separate smoke exhaust duct will greatly increase the cost. The parallel heading has a horseshoe-shaped section (drill and blast method) or a circular section (TBM method), and there is a certain amount of available space above. Using it only as an air inlet and emergency escape passage also results in low utilization rate of the large-scale constructed parallel headings.

[0007] Therefore, in order to improve the ventilation and smoke exhaust efficiency of ultra-long highway tunnels, increase the utilization rate of parallel headings, and reduce the comprehensive construction and operation costs, it is extremely urgent to explore and study a new mode of coordinated control of parallel heading ventilation and smoke exhaust, that is, to make efficient use of the parallel heading in layers, separate the upper and lower parts of the parallel heading with a partition, use the lower part as an air inlet and escape passage, and use the upper part as a smoke exhaust passage, and optimize the traditional control mode of parallel heading air inlet and main tunnel smoke exhaust into coordinated control of parallel heading ventilation and smoke exhaust;

[0008] However, there are many fans in the existing ventilation and smoke exhaust systems for smoke exhaust. When a fire occurs, due to the differences in the fire area and flame intensity, the disturbances to the entire smoke exhaust system are different, and it is necessary to adjust the fan parameters under different situations. Therefore, an intelligent and efficient evacuation system for the tunnel flat guide ventilation and smoke exhaust mode that can calculate the fan parameters at different positions to adjust the fans at different positions is proposed. Summary of the Invention

[0009] The present invention aims to provide an intelligent and efficient evacuation system based on the tunnel flat guide ventilation and smoke exhaust mode to solve the problem in the prior art that due to the differences in the fire area and flame intensity, the disturbances to the entire smoke exhaust system are different, and it is necessary to adjust the fan parameters under different situations.

[0010] To achieve the above object, the present invention provides the following technical solutions:

[0011] An intelligent and efficient evacuation system based on the tunnel flat guide ventilation and smoke exhaust mode includes a main passage. A transverse passage is adaptively provided on one side of the main passage, and a flat guide is adaptively provided at the other end of the transverse passage. Lifting devices are evenly provided on both sides of the inner wall of the flat guide. One end of the upper part of the lifting device is fixedly provided with a partition board. Sealing devices are adaptively provided on both sides above the partition board. A layered board is fixedly provided at one end of the inner wall of the transverse passage. Lifting devices and sealing devices are also adaptively provided in the transverse passage. A layered board is fixedly provided at one end of the inner wall of the transverse passage. A smoke prevention device is fixedly provided on one side of the layered board. Air doors are symmetrically provided below the layered board. An exhaust device is provided in the inner wall of the layered board. Moving devices are symmetrically provided below the layered board.

[0012] Further, a smoke exhaust passage is provided above the partition board, and an air inlet passage is provided below the partition board.

[0013] Further, a jet fan is adaptively provided above the partition board.

[0014] Further, two jet fans are arranged in each cross-section of the main passage, and the longitudinal distance between the jet fans is 150 m; one jet fan is provided above the flat guide, and two jet fans are provided on both sides of the transverse passage.

[0015] The steps of an intelligent and efficient evacuation system based on the tunnel flat guide ventilation and smoke exhaust mode are as follows:

[0016] Step 1: When the main passage is operating normally, the designed CO concentration δ in the tunnel is 100 ppm;

[0017] Step 2: When there is a traffic jam in the main passage, the vehicles in each lane drive at an idle speed, the average driving speed is 10.0 km / h, the experience time does not exceed 20 min, the length of the blocked section is not greater than 1000 m, and the average designed CO concentration in the blocked section in the tunnel can be taken as 150 ppm;

[0018] Step 3: The non-stop ventilation frequency of the tunnel space is 1 time per hour, and ensure that the ventilation wind speed Vr in the tunnel ≥ 1.5 m / s;

[0019] Step 4: The fresh air volume required to dilute the polluted air in the tunnel:

[0020] (1) The fresh air volume required to dilute CO satisfies the following formula:

[0021]

[0022] (2) The fresh air volume Qreq(co) required to dilute CO satisfies the following formula:

[0023]

[0024] Step 5: Calculate the fresh air volume required to dilute the smoke:

[0025] (1) The calculation of the smoke emission volume QVI satisfies the following formula:

[0026]

[0027] (2) The required air volume Qreq(VI) to dilute the smoke:

[0028]

[0029] Step 6: Calculate the required lift pressure ΔP of the tunnel:

[0030] (1) Natural wind resistance ΔPm:

[0031]

[0032] (2) Ventilation impedance force ΔPr:

[0033]

[0034] (3) Traffic ventilation force ΔPt:

[0035]

[0036] Where: A m =(1 - γ 1 )·A cs ·ξ cs +γ 1 ·A c1 ·ξ c1

[0037] (4) The required lift pressure ΔP in the tunnel:

[0038] Δp = Δp r +Δp m -Δpt

[0039] Step 7: Calculate the number of fans i:

[0040] (1) The pressure rise ΔPj of each jet fan:

[0041]

[0042] Among them, the friction loss reduction coefficient of the jet fan position η=0.87

[0043] (2) Calculate the number of fans i:

[0044]

[0045] The beneficial effects of the basic technical solution are:

[0046] Once a fire occurs in the main passage, the main passage will be immediately controlled for traffic. Except for the horizontal passage near the fire point, all other horizontal passages will be opened for evacuation and rescue of personnel. In this way, the original horizontal guide pressure-in longitudinal ventilation system is transformed into an interconnected ventilation network system, and network ventilation calculation is required at this time;

[0047] (1) The basic equation is as follows;

[0048] Air volume balance equation: ∑Q i =0

[0049] Wind pressure balance equation: ∑ΔP i -(∑H 风机 +∑H 自 +∑ΔP t )=0

[0050] Resistance equation: △P=RQ 2 .

[0051] (2) Solving equations;

[0052] Under the condition that the air volume balance law is satisfied, the air volume of each branch in the mesh is pre-assumed, and the mesh wind pressure balance equation is listed according to the wind pressure balance law and the resistance law. Then, the correction value of the air volume is calculated according to the Taylor series expansion of the equation.

[0053] Make the first correction to the initial value of the air volume, use the first corrected air volume to solve the second corrected value, and correct the second progressive air volume of each branch until the predetermined accuracy is met.

[0054] Preferably, when a fire occurs, due to the differences in the fire area and flame intensity, the disturbances to the entire smoke exhaust system are different, and it is necessary to adjust the fan parameters under different conditions. Therefore, a method is proposed that can calculate the fan parameters at different positions to adjust the operation of the fans at different positions, achieving efficient smoke exhaust. BRIEF DESCRIPTION OF THE DRAWINGS

[0055] Figure 1 FIG. 6 is a schematic diagram of the overall structure of a tunnel based on the ventilation and smoke exhaust mode of a tunnel crossheading;

[0056] Figure 2 FIG. 7 is a schematic diagram of the structure of a tunnel crossheading lifting device based on the ventilation and smoke exhaust mode of a tunnel crossheading;

[0057] Figure 3 FIG. 8 is a schematic diagram of the structure of a crossheading sealing device based on the ventilation and smoke exhaust mode of a tunnel crossheading;

[0058] Figure 4 FIG. 9 is a schematic diagram of the cross-sectional structure of the main tunnel based on the ventilation and smoke exhaust mode of a tunnel crossheading;

[0059] Figure 5 FIG. 10 is a schematic diagram of the overall cross-sectional structure of a tunnel based on the ventilation and smoke exhaust mode of a tunnel crossheading;

[0060] Figure 6 FIG. 11 is a schematic diagram of the cross-sectional structure of a cross tunnel based on the ventilation and smoke exhaust mode of a tunnel crossheading;

[0061] Figure 7 FIG. 12 is a schematic diagram of the cross-sectional structure of a layered plate based on the ventilation and smoke exhaust mode of a tunnel crossheading;

[0062] Figure 8 FIG. 13 is a detailed drawing of the cross-section of a moving device based on the ventilation and smoke exhaust mode of a tunnel crossheading;

[0063] Figure 9 FIG. 14 is a schematic diagram of the smoke exhaust organization when a fire occurs based on the ventilation and smoke exhaust mode of a tunnel crossheading;

[0064] Figure 10 FIG. 15 is a schematic diagram of the crossheading sectional forced ventilation scheme based on the ventilation and smoke exhaust mode of a tunnel crossheading;

[0065] The names of the corresponding reference signs in the drawings are as follows: 1, flat guide; 2, transverse channel; 3, main channel; 4, partition board; 5, smoke exhaust channel; 6, air inlet channel; 7, jet fan; 8, lifting device; 9, sealing device; 10, layered plate; 11, smoke prevention device; 12, air door; 13, exhaust device; 14, moving device; 601, lifting groove; 801, hydraulic telescopic rod; 802, T-shaped steel plate; 803, reinforcement groove; 804, reinforcement plate; 901, sealing plate; 902, sealing groove; 903, electric telescopic rod; 904, sealing rubber strip; 1101, air box; 1102, protective fan; 1103, air curtain; 1301, exhaust filter screen; 1302, exhaust fan; 1303, exhaust hole; 1401, arc-shaped slide rail; 1402, arc-shaped plate; 1403, moving rack; 1404, moving motor; 1405, moving gear. Detailed implementation mode

[0066] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0067] The specific implementation process is as follows:

[0068] Embodiment 1:

[0069] Please refer to Figure 1 、 Figures 4 - 8, a technical solution provided by the present utility model: a cross-channel smoke-proof intelligent opening device based on the ventilation and smoke exhaust mode of a tunnel parallel heading, including a main channel 3, a cross-channel 2 is adaptively installed on one side of the main channel 3, and a parallel heading 1 is adaptively installed at the other end of the cross-channel 2. One end of the inner wall of the cross-channel 2 is fixedly installed with a layered plate 10, and a smoke-proof device 11 is fixedly installed on one side of the layered plate 10. The smoke-proof device 11 includes a wind box 1101 fixedly installed on one side of the layered plate 10, a protective fan 1102 is adaptively installed above the wind box 1101, the protective fan 1102 is electrically connected to a power source and a control device, a wind curtain 1103 is obliquely installed on one side of the protective fan 1102, and the inclination angle of the wind curtain 1103 is 30 degrees. Air doors 12 are symmetrically installed below the layered plate 10, and the air doors 12 are adapted to one side of the main channel 3. An exhaust device 13 is provided in the inner wall of the layered plate 10. The exhaust device 13 includes exhaust holes 1303 provided in the inner wall of the layered plate 10. Exhaust filters 1301 are fixedly installed at both ends of the exhaust holes 1303, and exhaust fans 1302 are installed in the inner walls of the exhaust holes 1303. The exhaust fans 1302 are electrically connected to a power source and a control device. Moving devices 14 are symmetrically provided below the layered plate 10. The moving devices 14 include arc-shaped slide rails 1401 symmetrically provided on the lower surface of the layered plate 10. Arc-shaped plates 1402 are adaptively installed in the inner walls of the arc-shaped slide rails 1401. Moving racks 1403 are symmetrically installed on both sides of the arc-shaped slide rails 1401. A moving motor 1404 is fixedly installed above the arc-shaped plate 1402. The moving motor 1404 is electrically connected to a power source and a control device. A moving gear 1405 is adaptively installed at the output end of the moving motor 1404, and the moving gear 1405 is adapted to the moving rack 1403. During use, the smoke content in the main channel 3 is monitored by smoke sensors evenly installed on both sides of the main channel 3. The smoke sensors are electrically connected to a power source and a control device, and the monitored data is transmitted to the total control platform. When a fire occurs in the main channel 3 and the smoke content exceeds the set value, the total control platform controls the operation of the moving motor 1404 in the area where the smoke content exceeds the set value, so that the moving motor 1404 drives the moving gear 1405 to rotate, and the moving gear 1405 rotates and moves according to the moving rack 1403, so that the moving gear 1405 drives the arc-shaped plate 1402 to move, and the arc-shaped plate 1402 drives the air door 12 to perform an arc-shaped rotational movement, closing the air door 12 in the area where the smoke content exceeds the set range, so that the air door 12 closes the parallel heading 1 in the cross-channel 2, preventing the parallel heading 1 from being polluted, and using the remaining air doors 12 as evacuation channels, keeping the air doors 12 open. When the air door 12 is used as an evacuation channel, the protective fan 1102 on one side of the air door 12 is controlled by the total control platform to operate, so that the protective fan 1102 blows air on the main channel 3 through the wind curtain 1103 with an inclination angle of 30 degrees, preventing smoke from flowing into the cross-channel 2, and the exhaust fan 1302 in the exhaust hole 1303 is controlled by the total control platform to operate, extracting air on one side of the air door 12 used as an evacuation channel, preventing a small amount of smoke from flowing into the parallel heading 1.

[0070] Embodiment 2:

[0071] Please refer to Figures 1 - 3 , a technical solution provided by the present utility model: an intelligent lifting system for partition boards based on the ventilation and smoke exhaust mode of a tunnel parallel heading, including a main passage 3, a transverse passage 2 is adaptively installed on one side of the main passage 3, a parallel heading 1 is adaptively installed at the other end of the transverse passage 2, lifting devices 8 are uniformly installed on both sides of the inner wall of the parallel heading 1, a partition board 4 is fixedly installed at one end above the lifting device 8, a jet fan 7 is adaptively installed above the partition board 4, the jet fan 7 is electrically connected to a power supply and a control device, a smoke exhaust passage 5 is installed above the partition board 4, an air inlet passage 6 is installed below the partition board 4, the lifting device 8 includes a hydraulic telescopic rod 801 fixedly installed on the inner wall of the lifting groove 601, the hydraulic telescopic rod 801 is electrically connected to a power supply and a control device, a T-shaped steel plate 802 is adaptively installed at one end of the hydraulic telescopic rod 801, reinforcing grooves 803 are symmetrically opened above the T-shaped steel plate 802, a reinforcing plate 804 is adaptively installed in the reinforcing grooves 803, the reinforcing plate 804 is fixedly connected to the upper part of the T-shaped steel plate 802 and the lower part of the partition board 4, lifting grooves 601 are uniformly opened on both sides of the air inlet passage 6, sealing devices 9 are adaptively installed on both sides above the partition board 4, the sealing device 9 includes a sealing plate 901 fixedly installed on both sides above the partition board 4, a sealing groove 902 is opened on one side of the sealing plate 901, electric telescopic rods 903 are uniformly installed on one side of the inner wall of the sealing groove 902, the electric telescopic rods 903 are electrically connected to a power supply and a control device, a sealing rubber strip 904 is fixedly installed at one end of the electric telescopic rod 903, the sealing rubber strip 904 is adapted to the sealing groove 902, a layered plate 10 is fixedly installed at one end of the inner wall of the transverse passage 2, and the lifting device 8 and the sealing device 9 are also adaptively installed in the transverse passage 2. When in use, according to the smoke situation generated by the fire, the total control platform receives the smoke sensor, so that the total control platform controls the operation of the hydraulic telescopic rod 801, the lifting of the hydraulic telescopic rod 801 drives the T-shaped steel plate 802 to lift, the T-shaped steel plate 802 drives the reinforcing plate 804 on the surface to lift, so that the T-shaped steel plate 802 and the reinforcing plate 804 support the partition board 4 and drive the partition board 4 to lift, so that the lifting of the partition board 4 adjusts the sizes of the smoke exhaust passage 5 and the air inlet passage 6. When the lifting device 8 completes the lifting of the partition board 4, the total control platform controls the operation of the electric telescopic rod 903, so that the electric telescopic rod 903 drives the sealing rubber strip 904 to expand and contract. The sealing rubber strip 904 is made of rubber material and has a certain elasticity, so that the electric telescopic rod 903 pushes the sealing rubber strip 904 to contact both sides of the inner wall of the parallel heading 1, and seals the joints between both sides of the partition board 4 and the parallel heading 1 to prevent smoke from spreading to the parallel heading 1.

[0072] Embodiment 3:

[0073] Please refer to Figures 1 - 10, a technical solution provided by the present utility model: an intelligent and efficient evacuation system based on the ventilation and smoke exhaust mode of a tunnel flat heading, including a main passage 3, a transverse passage 2 is adaptively installed on one side of the main passage 3, and a flat heading 1 is adaptively installed at the other end of the transverse passage 2. Lifting devices 8 are evenly installed on both sides of the inner wall of the flat heading 1. One end of the upper part of the lifting device 8 is fixedly installed with a partition plate 4. A smoke exhaust passage 5 is installed above the partition plate 4, and an air inlet passage 6 is installed below the partition plate 4. A jet fan 7 is adaptively installed above the partition plate 4, and sealing devices 9 are adaptively installed on both sides above the partition plate 4. A layered plate 10 is fixedly installed at one end of the inner wall of the transverse passage 2. The same lifting device 8 and the sealing device 9 are also adaptively installed in the transverse passage 2. A layered plate 10 is fixedly installed at one end of the inner wall of the transverse passage 2. A smoke prevention device 11 is fixedly installed on one side of the layered plate 10. Air doors 12 are symmetrically installed below the layered plate 10. An exhaust device 13 is provided in the inner wall of the layered plate 10. Moving devices 14 are symmetrically provided below the layered plate 10, and the control device controls the indicator lights in the tunnel to light up. Red lights light up at positions close to the fire point, and green lights light up in the remaining areas and flash alternately to form guiding arrows to indicate people, and voice broadcasts are used to urgently remind people to evacuate, guiding the people in the main passage 3 to evacuate efficiently and quickly.

[0074] Two jet fans 7 of model SDS-90T-4PD1 are arranged on each cross-section of the main passage 3, and the longitudinal spacing between the two groups of jet fans 7 is 150 m; one jet fan 7 of model SDS-63T-2PD4 is arranged on each cross-section of the flat heading; two jet fans 7 of model SDS-63T-2PD2 are arranged on both sides of each vehicle transverse passage, with 1 as a spare, so as to ensure fresh air flow from the partition plate 4 to the main passage 3 under fire conditions and prevent the smoke generated by the fire from polluting the flat heading 1. The jet fans 7 in the transverse passage 2 can be started and stopped individually, which is convenient for the air flow control under fire conditions; Table 1 shows the selection table of jet fans.

[0075] Table 1 Jet fan selection

[0076]

[0077]

[0078] The steps of an intelligent and efficient evacuation system based on the ventilation and smoke exhaust mode of a tunnel flat heading are as follows (the required tunnel ventilation calculation parameters in the calculation process are shown in Table 2):

[0079] Table 2 Tunnel ventilation calculation parameter table

[0080]

[0081] Step 1: When the main passage 3 is operating normally, the designed CO concentration δ in the tunnel is 100 ppm;

[0082] Step 2: When the main channel 3 is blocked, the vehicles in each lane in the tunnel drive at idle speed, with an average driving speed of 10.0 km / h, the duration does not exceed 20 min, the length of the blocked section is not greater than 1000 m, and the average designed CO concentration in the blocked section in the tunnel can be taken as 150 ppm;

[0083] Step 3: The continuous ventilation frequency of the tunnel space is 1 time per hour, and it is ensured that the ventilation speed Vr in the tunnel ≥ 1.5 m / s;

[0084] Step 4: The fresh air volume required to dilute the polluted air in the tunnel:

[0085] (1) The fresh air volume required to dilute CO satisfies the following formula:

[0086]

[0087] (2) The required fresh air volume Qreq(co) to dilute CO satisfies the following formula:

[0088]

[0089] Step 5: Calculate the fresh air volume required to dilute the smoke:

[0090] (1) The calculation of the smoke emission volume QVI satisfies the following formula:

[0091]

[0092] (2) The required air volume Qreq(VI) to dilute the smoke:

[0093]

[0094] Among them, the designed tunnel smoke concentration value K is shown in Table 3:

[0095] Table 3 Designed tunnel smoke concentration K

[0096] Calculated driving speed (km / h) 60≤v≤90 50≤v≤60 30＜v＜50 v≤30 <![CDATA[K(m -1 )]]> 0.0065 0.007 0.075 0.012

[0097] Step 6: Calculate the required pressure rise ΔP of the tunnel (where the calculation coefficient of the required natural wind resistance is shown in Table 4):

[0098] Table 4 Calculation coefficient of natural wind resistance

[0099] <![CDATA[ζ e > <![CDATA[λ r > <![CDATA[υ n (m / s)]]> 0.6 0.02 2.5

[0100] (1) Natural wind resistance ΔPm:

[0101]

[0102] (2) Ventilation impedance force ΔPr:

[0103]

[0104] (3) Traffic ventilation force ΔPt:

[0105]

[0106] Where: A m =(1 - γ 1 )·A cs ·ξ cs +γ 1 ·A c1 ·ξ c1 , as shown in Table 5 are the calculation parameters of the equivalent impedance area Am of the vehicle:

[0107] Table 5 Calculation parameters of the equivalent impedance area Am of the vehicle

[0108]

[0109] (4) Required lift pressure ΔP in the tunnel:

[0110] Δp = Δp r +Δp m -Δp t

[0111] Step 7. Calculate the number of fans i:

[0112] (1) Lift pressure ΔPj of each jet fan:

[0113]

[0114] Among them, the friction loss reduction coefficient η of the jet fan position is 0.87

[0115] (2) Calculate the number of fans i:

[0116]

[0117] Among them, the wind speed v in the tunnel: 1.5 m / s ≤ v ≤ 8 m / s

[0118] When all the jet fans 7 are turned on, if the average CO concentration in the main channel 3 is still higher than 150 ppm or the VI value is still higher than 0.012 m -1 and the duration exceeds 20 min, traffic control should be carried out in this tunnel.

[0119] Working principle: In case of fire, block the main channel 1, prohibit vehicles from continuing to enter the main channel 1, and immediately organize evacuation, rescue and fire extinguishing;

[0120] Generally, the principles of train operation are as follows:

[0121] (1) The vehicle driving towards the fire point shall stop advancing. The passengers shall abandon the vehicle and escape through the nearest cross-passage 2 into the intake airway 6. It is strictly prohibited for the vehicle to turn around in the main passage 3 to avoid secondary disasters.

[0122] (2) The vehicle driving away from the fire point shall quickly drive out of the tunnel.

[0123] (3) The rescue vehicles and fire extinguishing vehicles shall enter the main passage 3 from the upwind side of the fire point through the rescue passage and the cross-passage 2 to extinguish the fire.

[0124] After a fire occurs, the operation state of the fan shall be adjusted first, and the rescue wind speed shall be adopted to control the development of the fire and the flow direction of the smoke. After all the escape personnel in the tunnel are completely and safely evacuated, the smoke exhaust and ventilation organization system shall be started in the fire extinguishing and smoke exhaust stage to discharge the smoke out of the tunnel through the nearest smoke exhaust port. The smoke exhaust and ventilation organization system shall select different ventilation directions according to the location of the fire point. The basic principle of smoke exhaust is to make the smoke discharge along the relatively near smoke exhaust passage 5;

[0125] Air is supplied from both ends of the parallel adit 1, flows into the main passage 1 through the cross-passage 2, and then is discharged through the smoke exhaust passage 5.

[0126] The cross-passage 2 near the fire point closes the air door 12 through the moving device 14, and the air doors 12 of the remaining cross-passages 2 are all opened to facilitate the escape of personnel.

[0127] To ensure the safe evacuation of personnel in the main passage 3 and prevent the fire from spreading, the wind speed of the jet fan 7 in the fire section of the main passage 3 is controlled at 0 - 0.5 m / s.

[0128] Control the jet fan 7 in the cross-passage 2 to close the cross-passage 2 within the range of the spread of the fire smoke, so that the air flow direction is from the remaining intake airways 6 to the fire main passage 3, and avoid the fire-generated smoke from polluting the parallel adit 1.

[0129] The above are only the embodiments of the present utility model. Specific technical solutions or common knowledge such as characteristics well known in the art are not described in detail herein. It should be noted that for those skilled in the art, without departing from the technical solution of the present utility model, several deformations and improvements can be made, which should also be regarded as the protection scope of the present utility model, and these will not affect the implementation effect of the present utility model and the practicality of the patent. The protection scope required by this application shall be subject to the content of its claims, and the specific implementation manners and the like recorded in the specification can be used to interpret the content of the claims.

Claims

1. An intelligent and efficient evacuation system based on a tunnel flat ventilation and smoke exhaust mode, comprising a main channel (3), characterized in that: A transverse channel (2) is adapted to be provided on one side of the main channel (3), a flat guide (1) is adapted to be provided on the other end of the transverse channel (2), lifting devices (8) are evenly provided on both sides of the inner wall of the flat guide (1), a partition (4) is fixedly provided on one end above the lifting device (8), sealing devices (9) are adapted to be provided on both sides above the partition (4), a layering plate (10) is fixedly provided on one end of the inner wall of the transverse channel (2), a lifting device (8) and the sealing device (9) are also adapted to be provided in the transverse channel (2), a layering plate (10) is fixedly provided on one end of the inner wall of the transverse channel (2), a smoke prevention device (11) is fixedly provided on one side of the layering plate (10), a damper (12) is symmetrically provided below the layering plate (10), an exhaust device (13) is provided on the inner wall of the layering plate (10), and a moving device (14) is symmetrically provided below the layering plate (10).

2. According to claim 1, an intelligent and efficient evacuation system based on tunnel flat ventilation and smoke exhaust mode is characterized by: A smoke exhaust passage (5) is provided above the partition (4), and an air inlet passage (6) is provided below the partition (4).

3. According to claim 1, an intelligent and efficient evacuation system based on tunnel flat ventilation and smoke exhaust mode is characterized by: A jet fan (7) is adapted to be arranged above the partition (4).

4. According to claim 1, an intelligent and efficient evacuation system based on tunnel flat ventilation and smoke exhaust mode is characterized by: Two jet fans (7) are arranged in each group of sections of the main channel (3), and the longitudinal spacing of the jet fans (7) is 150m; a jet fan (7) is arranged above the horizontal guide (1), and two jet fans (7) are arranged on both sides of the transverse channel (2).

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