Flow guiding and dispersing system for tunnel outlet pollutants

Abstract

The utility model discloses a diversion dispersing system for tunnel exit pollutants in the technical field of tunnel pollution discharge, which comprises a tunnel and air guide walls, the left side and the right side of the tunnel are respectively provided with one air guide wall, through the design of the air guide walls, transverse wind power outside a tunnel entrance can be guided, and the monsoon wind direction of a sea area is generally stable. The wind guide walls are installed on the rails in a sliding mode through the wheel sets and can retract into the equipment gallery, so that the monsoon guide range is adjusted, according to the Bernoulli equation principle, monsoon bypasses when meeting resistance, the wind speed is greatly increased, the higher the wind speed is, the lower the pressure is, and therefore pollution airflow, close to the ground, in the wind guide walls on the two sides is sucked upwards to form negative pressure cyclones. And on the basis of the Gaussian diffusion effect, a plurality of groups of transverse hedging guide fans and longitudinal hedging guide fans are additionally arranged to hedge and pressurize air mixed with pollutants at the tunnel exit, so that vitiated air overflowing from the tunnel entrance is more easily extruded to the high altitude, and the effect of rapidly reducing the concentration of the pollutants around the tunnel is achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of air guiding wall, especially a kind of tunnel exit pollutant guiding and dispersing system. BACKGROUND

[0002] Tunnel engineering is built underground or underwater or in mountain, and tunnel is the building that can facilitate vehicle traffic. Its purpose is to shorten the distance and avoid steep slope road to meet the requirements of road construction, and also can avoid brake failure or over-speed driving hazards caused by steep slope road.

[0003] Some tunnels are underwater tunnels for crossing water areas, and there are city tunnels in cities, which also cross soil underground. The most common one is mountain tunnel.

[0004] The tunnel is a closed road, but the pollutants such as automobile exhaust and dust raised by vehicle driving are filled in the tunnel, and the pollutants will flow with the driving direction of the vehicle, and will be concentrated at the tunnel exit due to air flow, resulting in poor air quality near the tunnel entrance, and the pollutants discharged will be concentrated near the tunnel exit and will be deposited, and the dust and polluted exhaust gas will be concentrated at the tunnel exit and will be horizontally dispersed with monsoon, and will be concentrated in the low altitude position around the tunnel entrance, generally below 10 meters, which seriously affects the life of surrounding residents, and it is imperative to solve the problem of pollutant emission.

[0005] The current way is to build more ramps and set up jet fans for exhaust, and multiple vertical shafts will be dug for high-altitude discharge. The cost of ramp diversion is high, and the available soil and geological conditions around the tunnel are harsh, the construction difficulty is great, the ramp occupies a lot of land, and the principle of using tunnel to blow air outward, the internal air resistance is large, the number of fans is large, especially the longer ramp needs more fans to blow and discharge, the consumption is high, the discharge effect is limited, it is difficult to reduce the concentration of tunnel exit pollutants to a reasonable range, and the vertical shaft discharge will damage the buildings above or the mountains, and will also damage the tunnel structure, especially the water area tunnel, which needs to build artificial islands, and the limitation is too large, it is difficult to implement.

[0006] Therefore, the utility model designs a kind of tunnel exit pollutant guiding and dispersing system to solve the above problems. CONTENT OF UTILITY MODEL

[0007] The utility model aims at providing a kind of tunnel exit pollutant guiding and dispersing system, which can utilize the wind force outside the tunnel entrance, especially the influence of monsoon climate, can generate transverse wind at the mountain cut of the tunnel entrance, and the device is provided with vertical air guiding wall on both sides outside the tunnel entrance,

[0008] By using the cross wind, based on the principle of Bernoulli equation, "the air flow speed of encountering resistance and passing through the wind guide wall will be greatly accelerated, the greater the wind speed, the lower the pressure", thus forming the air pressure difference between the high and low of the road surface, so as to suck the air flow close to the ground of the wind guide wall upward, forming the cyclone effect, reaching the effect of guiding the free diffusion of pollutants to the diffusion to the high air by using the physical condition, and increasing the cooperation of multiple groups of cross collision guide fans and longitudinal collision guide fans, forming the air flow collision of the pressurized clean air outside, forcing the contaminated air overflowing from the tunnel to be discharged to the high air, reaching the purpose of rapidly reducing the concentration of pollutants, and ensuring the clean and environmentally friendly human living environment around the tunnel.

[0009] The utility model is such a realization: a tunnel outlet pollutant guiding and dispersing system, it includes:

[0010] The dispersing device includes: a tunnel, a wind guide wall, a base, a cross collision guide fan and a longitudinal collision guide fan;

[0011] A device corridor is arranged on the left and right sides of the tunnel, the device corridor is a straight channel, and the device corridor is parallel to the axis at the tunnel outlet;

[0012] The base is a long strip-shaped base arranged along a straight line, a track is arranged on the top of the base, and the track completely covers the top of the base in the front-rear direction; a base is arranged in each device corridor, the base is fully arranged in the device corridor, the outer end of the base extends outside the device corridor, and the depth of the device corridor is less than the length of the base extending outside the device corridor;

[0013] The wind guide wall is a vertical plate structure, a wind guide wall is arranged in each device corridor on the left and right sides, a plurality of wheel pairs are uniformly arranged on the bottom of the wind guide wall, and the wind guide wall is arranged on the track in a rolling and translational mode through the wheel pairs;

[0014] A plurality of cross collision guide fans and a plurality of longitudinal collision guide fans are arranged on the left and right sides of the tunnel, and a plurality of cross collision guide fans and a plurality of longitudinal collision guide fans are arranged between the wind guide walls and the road on the left and right sides;

[0015] The anti-inclination frame is a door frame structure, the wind guide wall is arranged in the anti-inclination frame in a transverse mode, a hanging track is further hung on the bottom of the top beam of the anti-inclination frame, a plurality of hanging wheels are further arranged on the top of the wind guide wall, the hanging wheels are arranged on the hanging track in a rolling mode, and the wind guide wall is hung below the hanging track in a hanging mode through the hanging wheels.

[0016] Further, a concrete retaining wall is poured between the tunnel and the device corridor, the retaining wall is isolated between the tunnel and the device corridor, the device corridor is open at the outer end and closed at the inner end, the device corridor is opened to the inside of the mountain body with a depth greater than the length s of the wind guide wall, and the length difference is not more than 3 m.

[0017] Further, the track is two mutually parallel rails, and the distance between the two tracks is not more than 0.5 meters.

[0018] Further, the air guide wall is uniformly provided with a plurality of bearings at the bottom, and the bearings penetrate the air guide wall on both sides in the left-right direction, and the axes of the bearings on the same air guide wall are in the same plane.

[0019] The driving motor is also installed on the wheel pair at the front and rear ends of the same air guide wall.

[0020] The total length s of the air guide wall is 15-80 meters, and the height h of the air guide wall is between 5-8 meters.

[0021] Further, the bottom of each transverse and longitudinal air guide fan is provided with a brake wheel.

[0022] The beneficial effects of the utility model are: 1. The utility model increases the air guide wall, and the air guide wall is installed on the track, can be conveniently moved, thereby blocking on both sides of the tunnel, also can be retracted in the equipment corridor, convenient operation, it is convenient to flexibly adjust the airflow near the tunnel entrance, when different seasons have different wind directions, the air guide wall can be adjusted according to the wind direction, also can be retracted, flexible adjustment, more times in the low pressure state of the space above the tunnel entrance,

[0023] It is convenient for the pollutants in the low place to rapidly diffuse to the upper space, avoids the horizontal spread of pollutants to the surrounding low-altitude human living environment;

[0024] The device also increases a plurality of fans, and the fan orientation is power and tangential force with external transverse wind, so that the airflow is more easily formed into a cyclone at the tunnel entrance, thereby quickly extruding and lifting away the pollutants, effectively avoiding the aggregation of pollutants;

[0025] 2. The air guide wall of the device is arranged on both sides of the tunnel, utilizes the principle of Bernoulli equation, makes the bottom air pressure greater and the upper air pressure smaller, reduces the exhaust resistance and the wind power demand, can save more power, more quickly exhausts the pollutants, reduces the number and power of the fan, requires lower wind power, and the device does not need to additionally excavate a vertical shaft and other ramps, has small damage to the environment and the tunnel, simple structure, and convenient construction. BRIEF DESCRIPTION OF DRAWINGS

[0026] The utility model will be further described below with reference to the drawings combined with embodiments.

[0027] Figure 1 It is the overall structure schematic diagram of the tunnel of the utility model;

[0028] Figure 2 It is the front structure schematic diagram of the tunnel of the utility model;

[0029] Figure 3 It is the front structure schematic view of the track and wheel pair split state of the utility model;

[0030] Figure 4 It is the side structure schematic view of the air guiding wall of the utility model;

[0031] Figure 5 It is the schematic view of the air guiding wall from the underwater tunnel inclined rising state of the utility model;

[0032] Figure 6 It is the overhead schematic view of the tunnel external structure of the utility model;

[0033] Figure 7 It is the schematic view of the transverse wind overtopping the air guiding wall state of the utility model;

[0034] Figure 8 It is the schematic view of the monolateral pollution driving state of the monsoon of the utility model;

[0035] Figure 9 It is the structure schematic view of the anti-inclination frame and air guiding wall cooperation state of the utility model;

[0036] Figure 10 It is the air guiding wall structure schematic view of the frame inside of the anti-inclination frame of the utility model;

[0037] Figure 11 It is the structure schematic view of the hanging wheel and hanging rail of the utility model.

[0038] In the drawing, the component list represented by each mark is as follows:

[0039] 1-tunnel, 11-equipment corridor, 12-retaining wall, 2-air guiding wall, 21-wheel pair, 22-bearing, 23-wheel shaft, 3-base, 31-track, 4-transverse butt-jetting guide fan, 41-longitudinal butt-jetting guide fan, 5-anti-inclination frame, 51-hanging rail, 52-hanging wheel. DETAILED DESCRIPTION

[0040] Please refer to Figures 1 to 11 The utility model provides a kind of tunnel export pollution's air guiding dispersion system, to better understand the above technical solution, the above technical solution will be explained in detail in the following by combining with the drawing of specification and specific embodiment.

[0041] In one specific embodiment of the utility model technical solution:

[0042] Including tunnel 1, air guiding wall 2, base 3, transverse butt-jetting guide fan 4 and longitudinal butt-jetting guide fan 41;

[0043] The tunnel 1 is provided with a device corridor 11 on the left and right sides, the device corridor 11 is a flat channel, the device corridor 11 is parallel to the axis at the outlet of the tunnel 1, that is, the device corridor 11 is the same as the vehicle flow direction at the outlet of the tunnel 1; a concrete retaining wall 12 is poured between the tunnel 1 and the device corridor 11, the retaining wall 12 is isolated between the tunnel 1 and the device corridor 11, the device corridor 11 is open at the outer end and closed at the inner end, the device corridor 11 is opened to the inside of the mountain body with a depth greater than the length s of the wind guide wall 2, and the length difference is not more than 3 meters, both ends of the tunnel 1 are open, and the tunnel 1 and the device corridor 11 are externally poured with a concrete reinforcing structure to ensure the structure is firm and can withstand the weight of the mountain body.

[0044] The base 3 is a long strip-shaped base provided along a straight line and is a firm structure poured with concrete, and the base 3 is provided with a track 31 on the top, which completely covers the top of the base 3 in the front-rear direction; the track 31 is completely the same as the railway track structure, except that the distance between the two tracks 31 is closer, and the track 31 is two parallel rails with a distance of not more than 0.5 meters.

[0045] A base 3 is laid in each device corridor 11, the base 3 covers the inside of the device corridor 11, and the outer end of the base 3 extends outside the device corridor 11, the depth of the device corridor 11 is less than the length of the base 3 extending outside, that is, the length of the base 3 inside the device corridor 11 is less than the length d extending outside, and the difference is 3 meters; such design can make the track 31 fully cover the inside of the device corridor 11 and extend outward to a position sufficient for the entire wind guide wall 2 to extend out, and the covering length is preferably 15 meters outward from the tunnel 1,

[0046] Because in a windless environment, most of the pollutants inside the tunnel 1 are settled and gathered within about 10 meters around the tunnel entrance, when the monsoon blows, the pollutants follow the Gaussian diffusion model and orderly diffuse to the surrounding low-altitude environment, the device only needs to guide the pollutants at the tunnel entrance from low-altitude horizontal diffusion to high-altitude diffusion, so that the remaining pollutants will not continue to extend horizontally outward, thereby ensuring the ecological health of the surrounding human living environment.

[0047] The wind guide wall 2 is a vertically arranged flat structure, and a wind guide wall 2 is arranged in each device corridor 11 on the left and right sides, a plurality of wheel pairs 21 are uniformly arranged on the bottom of the wind guide wall 2, and the wind guide wall 2 is arranged on the track 31 through the wheel pairs 21 and can roll and translate; a plurality of bearings 22 are uniformly arranged on the bottom of the wind guide wall 2, and the bearings 22 penetrate the two sides of the wind guide wall 2 in the left-right direction, and the axes of the bearings 22 on the same wind guide wall 2 are in the same plane;

[0048] The driving motor is also installed on the wheel pairs 21 at the front and rear ends of the same wind guide wall 2; the wind guide wall 2 can be a steel plate with a sandwich layer, or a light PVC composite material plate, or a brick and concrete wall body built by masonry, without limitation on the material, as long as the wind can be blocked outside the tunnel 1 and the support is stable.

[0049] The total length s of the wind guide wall 2 is 15-18 meters, and the height h of the wind guide wall 2 is between 5-8 meters. The height and length of the wind guide wall 2 are adjusted according to the height of the tunnel 1, and are also designed according to the pollutant concentration discharged at the tunnel outlet, the monsoon wind speed at the place, and the height on both sides of the tunnel 1. The specific data of the device is only the best applicable range, and the conventional tunnel also has its fixed size requirements;

[0050] The general single-line tunnel has a height of 6.6-7.0 meters and a width of 4.9-5.6 meters. The double-line tunnel has a height of 7.2-8.0 meters and a width of 8.8-10.6 meters. The ground outlet of the sea area tunnel can be raised and widened according to the needs. The actual height and length of the wind guide wall 2 of the device are also designed considering the size of the tunnel 1.

[0051] A plurality of anti-tilting frames 5 are also arranged outside the wind guide wall 2, the anti-tilting frame 5 is in the shape of a door frame, every two adjacent anti-tilting frames 5 are spaced 5-10 meters apart, the anti-tilting frame 5 needs to extend from head to tail and cover above the track 31, the heights and sizes of the plurality of anti-tilting frames 5 are the same, so that the plurality of anti-tilting frames 5 form a channel with uniform spacing, and the wind guide wall 2 is transversely arranged inside the channel formed by the anti-tilting frames 5.

[0052] The top beam of the anti-tilting frame 5 is also hung with a hanging rail 51, the hanging rail 51 is a groove guide rail made of profile steel with an open bottom, and a plurality of hanging wheels 52 are arranged on the top of the wind guide wall 2, one set of hanging wheels 52 is arranged every 5 meters, the top of the wind guide wall 2 is hung on the hanging rail 51 by rolling through the hanging wheels 52, and the wind guide wall 2 is hung directly below the hanging rail 51 through the hanging wheels 52;

[0053] In this way, the top of the wind guide wall 2 is positioned by the hanging wheels 52 and the hanging rail 51, and the bottom is limited by the track 31 and the wheel pairs 21, so that a more stable movable wall body is formed. The hanging wheels 52 and the hanging rail 51 need to use industrial hoisting equipment with sufficient strength to ensure that the wind guide wall 2 is stably supported. The anti-tilting frame 5 uses a pile foundation concrete frame to ensure the support strength.

[0054] A plurality of transverse collision guide fans 4 and a plurality of longitudinal collision guide fans 41 are arranged on both sides of the tunnel 1, and the transverse collision guide fan 4 and the longitudinal collision guide fan 41 can be a (rainproof) box type centrifugal fan.

[0055] A plurality of transverse collision guide fans 4 and a plurality of longitudinal collision guide fans 41 are arranged between the wind guide walls 2 on both sides and the road;

[0056] The same side transverse impingement guide fan 4 is arranged in line in the front-rear direction, and the blowing direction of each transverse impingement guide fan 4 is towards the road center;

[0057] The same side longitudinal impingement guide fan 41 is also arranged in line in the front-rear direction, and the blowing direction of each longitudinal impingement guide fan 41 is directly opposite the tunnel 1 outlet.

[0058] The transverse impingement guide fan 4 is located at the rear side of the longitudinal impingement guide fan 41, and the blowing direction and height position of each longitudinal impingement guide fan 41 on the same side coincide, so that the wind blown by each longitudinal impingement guide fan 41 is connected in sequence, forming a sequential acceleration effect, that is, the air inlet of each longitudinal impingement guide fan 41 on the side of the tunnel 1 outlet, that is, the rear side, is located on the blowing path of the front longitudinal impingement guide fan 41; at the same time, the high-speed outlet airflow induces the surrounding air and increases the pressure on the reverse monsoon and pollutants.

[0059] The blowing direction of each transverse impingement guide fan 4 is parallel and at the same height position, and the blowing direction of the longitudinal impingement guide fan 41 is directly opposite the air outlet of the transverse impingement guide fan 4, that is, the transverse impingement guide fan 4 is arranged close to the air guide wall 2, and the longitudinal impingement guide fan 41 is arranged close to the road, each fan is controlled by a controller, the controller is arranged inside the equipment gallery 11, and the fan mainly operates the wind power size, and the fan is rainproof;

[0060] Each transverse impingement guide fan 4 and longitudinal impingement guide fan 41 is provided with a brake wheel at the bottom, which can be conveniently moved. The transverse impingement guide fan 4 and longitudinal impingement guide fan 41 can be withdrawn into the equipment gallery 11 in seasons when the emission of pollutants by the transverse impingement guide fan 4 and longitudinal impingement guide fan 41 under the Gauss diffusion effect meets the environmental protection requirements, and the airflow direction can also be adjusted to ensure that an upward cyclone is generated at the tunnel 1 outlet, so as to disperse the pollutants and haze.

[0061] It should be noted that:

[0062] 1、Bernoulli equation principle is applied in many fluid environments, that is, when the airflow speed is inconsistent, the high-speed flow area generates small pressure, forming a pressure difference, the device uses this principle, when the transverse wind blows through the top of the wind guide wall 2, the wind speed is fast, the wind speed of the road surface at the bottom of the wind guide wall 2 is slow, which leads to a pressure difference, the top air pressure is low, thereby forming a rising cyclone, the transverse and longitudinal collision guide fans 4 and 41 of the device blow the road center and the tunnel exit again, forming an auxiliary positive pressure airflow, thereby forming a larger range of rising cyclones at the bottom of the road, as long as the wind is larger, the pressure difference between the high and low air of the tunnel exit road is larger, the cyclone lift is larger, the airflow speed is faster, and the dust removal effect is better, when the external transverse wind airflow is insufficient, the wind power of the transverse and longitudinal collision guide fans 4 and 41 can be increased, when the external transverse wind airflow is sufficient, only small or no fan blowing is needed.

[0063] 2、The internal pollutants of the tunnel 1 itself are diffused along the tunnel 1 exit road near the ground in an orderly manner according to the Gaussian diffusion model for a long time, and are difficult to disperse, which is the main reason for serious pollution in the surrounding living area, the diffusion speed of the pollutants is proportional to the emission height of the pollution source, as long as the pollutants are quickly lifted, the diffusion speed is doubled, it is difficult to form a pollution gas and particulate matter accumulation near the tunnel 1 exit, thereby reducing pollution and reducing the content of co, PM2.5 and other dirty air at the low altitude around the tunnel 1 exit.

[0064] 3、The device is also suitable for mountain tunnels with long wall bodies on both sides of the tunnel 1 exit, especially when the mountain is excavated, generally, the tunnel exit is blocked by the mountain on both sides, forming a concave road with an open top, and the device is also suitable for such an environment, and the lift of the device can be effectively strengthened in the monsoon area, and the air guiding and dust removal effect is better.

[0065] 4、The conventional flow guide wall is fixedly built, and when the wind direction changes or the wind power changes, it cannot be adjusted, and such a completely fixed flow guide wall may hinder the tunnel 1 from removing dust at some specific wind directions, at this time, the wind guide wall 2 of the device can be pushed and retracted in the equipment corridor 11, the flow state of the transverse wind is changed, and the situation that the diffusion of the pollutants is hindered is avoided.

[0066] In use, the pollutant concentration of the monitoring collection point, the wind speed and direction around the tunnel exit are monitored and collected first, and then the length and height of the wind guide wall 2 and the configuration of the longitudinal collision guide fan are set according to the pollutant concentration, wind power and wind direction.

[0067] The driving motor on the wheel set 21 is controlled to drive the wheel set 21 at both ends of the air guide wall 2, until the air guide wall 2 is translated to the designated position, and the wheel set 21 is locked, the wheel set 21 is a common train support structure, and is a mature device, and the brake can be started, and the device only needs to be locked at the required position of the air guide wall 2.

[0068] Then adjust the fan position, the transverse collision guide fan 4 is placed close to the tunnel 1, the transverse collision guide fan 4 is arranged in a straight line, and the transverse collision guide fan 4 is arranged on both sides of the road outside the tunnel 1, and the blowing direction of each transverse collision guide fan 4 is perpendicular to the vehicle driving direction, that is, the wind is blown from the outside to the inside, forming multiple parallel winds.

[0069] The longitudinal collision guide fan 41 is also arranged in a straight line, but the wind blown by the longitudinal collision guide fan 41 forms relay wind, that is, the height position and blowing direction of each longitudinal collision guide fan 41 are the same, the longitudinal collision guide fan 41 blows wind towards the tunnel 1 outlet direction, that is, parallel to the vehicle driving direction, the gas far away from the tunnel 1 outside needs to be blown to the tunnel 1 hole, and the wind force is sequentially connected, so that the wind blown by the longitudinal collision guide fan 41 is connected as jet flow.

[0070] And the wind blown by the longitudinal collision guide fan 41 is opposite to the blowing path of the transverse collision guide fan 4, and at the same time, the longitudinal collision guide fan 41 is located at the front end of the transverse collision guide fan 4, that is, closer to the road direction, so that the wind blown by the longitudinal collision guide fan 41 collides with the monsoon blown towards the land direction, forcing the polluted gas in the tunnel outlet to rise to high altitude and diffuse.

[0071] And the air guide wall 2 blocks the left and right sides of the tunnel 1 outside, the transverse collision guide fan 4 and the longitudinal collision guide fan 41 are also arranged on the left and right sides of the tunnel 1, to ensure the positive pressure of the tunnel 1 outlet, and further generate a stable upward cyclone.

[0072] When the top of the wind guide wall 2 encounters crosswind, the crosswind climbs over the wind guide wall 2, according to the principle of Bernoulli equation, the airflow speed above the wind guide wall 2 is fast and the pressure is low, the airflow speed of the polluted air in the middle of the road in the wind guide wall 2 area is relatively slow and the pressure is high, so that the area formed between the road outside the tunnel 1 and the two sides of the wind guide wall 2 forms a Bernoulli effect space, the part of the road close to the ground generates high pressure, and low pressure is generated in the air above the road, and the airflow will flow upward by itself, even without the blowing of the fan, the gas at the tunnel entrance will also generate upward lift to form an upward “chimney” effect, which quickly lifts the polluted gas at the tunnel entrance to high altitude and disperses, achieving the effect of pollution discharge. Based on the Gaussian diffusion model, the Bernoulli effect is flexibly applied and combined in the same scene to form a strong gas discharge effect, which can quickly disperse the polluted gas in the space of the tunnel entrance upward instead of horizontally to low altitude, so that the surrounding living environment meets the environmental protection requirements.

[0073] The sea area monsoon direction is generally stable, so the dispersion device is suitable for coastal areas. The wind guide wall 2 is slidably installed on the track 31 by a wheel pair and can be retracted in the equipment corridor to adjust the monsoon guide range. Based on the Gaussian diffusion model, the horizontal blowing of the undisturbed cross monsoon will make the pollutants diffuse quickly along the ground, and the wind guide wall 2 device makes the cross monsoon “hit” the wind guide wall in advance and accelerate over the wind guide wall 2. According to the principle of Bernoulli equation, the wind speed will greatly increase when the monsoon is blocked and turns, the greater the wind speed, the lower the pressure, so that the polluted airflow close to the ground in the two sides of the wind guide wall is sucked upward to form a negative pressure cyclone, and a plurality of groups of transverse and longitudinal collision guide fans 4 and 41 are matched to air collide and pressurize the mixed tunnel 1 outlet pollutants, which can more easily squeeze the dirty air overflowing from the tunnel 1 to high altitude to quickly reduce the concentration of pollutants around the tunnel. When the longitudinal monsoon faces the sea area, the wind guide wall 2 can be retracted into the equipment corridor to guide the rapid diffusion of pollutants to the sea area.

[0074] According to GB3095_2012 “Ambient Air Quality Standard” 4.2, it can be known from Table 1 of ambient air functional area quality requirements that the co emission concentration limit value of the sampling port at the hole end is 10 mg / m3 or 8 ppm. According to “Highway Tunnel Ventilation Design Details” Table 5.3.1, when L>3000m, the co concentration limit value in the hole is 100 ppm, which is 12.5 times the requirement of environmental air. When the sampling port around the hole outside the road pollution monitoring point exceeds the national standard, the pollution dispersion operation can be completed through the step.

[0075] When the tunnel 1 outlet pollutant concentration exceeds the standard, the dispersion device is started. The pollutant is determined by the exhaust of the vehicle. If there are few vehicles, such as in winter at night, the pollutant does not exceed the standard, and the pollutant dispersion device does not need to be started. In the case of exceeding the standard, it is judged whether to start the fan or use the wind guide wall according to the wind direction. The two can be used together or separately.

[0076] The dispersion method comprises the following steps:

[0077] Step S1, a wind speed meter is used to detect the wind speed and direction outside the tunnel 1 outlet. The sampling port should be 2-5m above the ground, and the distance from the sampling port to the road edge should be within 20m. After detecting the wind direction, a wind guide wall 2 is installed to cooperate with the wind direction. Whether the wind guide wall 2 extends out of the tunnel 1 is adjusted according to the measured wind direction. The number of transverse collision guide fans 4 and multiple longitudinal collision guide fans 41 is matched according to the measured wind direction and wind speed, until the total amount of all fans can guide and change the natural wind direction.

[0078] Step S2, the wind guide wall 2 is completely translated to the outside of the equipment corridor 11, and the rear end of the wind guide wall 2 is flush with the tunnel 1 outlet. The length of the wind guide wall 2 is 15-80m, and the height is 5-8m. The construction can be designed according to the local monsoon and actual pollution situation.

[0079] Step S3, multiple transverse collision guide fans 4 and multiple longitudinal collision guide fans 41 are arranged between the wind guide wall 2 and the road.

[0080] Step S4, the transverse collision guide fans 4 on the same side are arranged in a straight line in the front-rear direction, and the blowing direction of each transverse collision guide fan 4 is towards the road center. The longitudinal collision guide fans 41 on the same side are also arranged in a straight line in the front-rear direction, and the blowing direction of each longitudinal collision guide fan 41 is directly opposite the sea direction of the tunnel 1.

[0081] The transverse collision guide fan 4 is located at the rear end of the longitudinal collision guide fan 41, and the blowing direction and height position of each longitudinal collision guide fan 41 on the same side coincide.

[0082] The blowing direction of each transverse collision guide fan 4 is parallel and at the same height position.

[0083] Step S5, the blade center distance of the transverse collision guide fan 4 and the longitudinal collision guide fan 41 from the ground height is between 2-4m.

[0084] Step S6, the number of transverse collision guide fans 4 and longitudinal collision guide fans 41 on each side is the same, and the frontmost longitudinal collision guide fan 41 is flush with the frontmost end of the wind guide wall 2. The spacing between each adjacent transverse collision guide fan 4 or longitudinal collision guide fan 41 is the same.

[0085] When the monsoon blows from the sea to the land, the wind guide wall 2 is completely translated to the outside of the equipment corridor 11, and the rear end of the wind guide wall 2 is flush with the outlet of the tunnel 1, and the transverse or longitudinal collision guide fan 4 is opened, and the polluted air flow is blown to the high altitude in cooperation with the monsoon, at this time, the polluted air flow cannot be blown to the sea surface, and both sides of the wind guide wall 2 can be stretched out to guide the air flow to the high altitude.

[0086] When the monsoon blows from the land to the sea, and the road center line at the outlet of the tunnel 1 and the monsoon direction are less than 45°, the wind guide wall 2 is completely shrunk to the inside of the equipment corridor 11, and the transverse or longitudinal collision guide fan 4 is opened, and the polluted air flow is blown to the sea in cooperation with the monsoon. When the road center line at the outlet of the tunnel 1 and the monsoon direction are greater than or equal to 45°, the wind guide wall 2 is completely translated to the outside of the equipment corridor 11, and the transverse or longitudinal collision guide fan 4 is opened, and the polluted air flow is blown to the sea in cooperation with the monsoon.

[0087] As long as there is a monsoon, and one side is at a low altitude, such as sand, cliffs, concave land, etc. No one can collect the wind guide wall 2 on the lower side, and the other side can be stretched out to guide the wind guide wall 2 on the side blown by the monsoon, and the wind guide wall 2 is completely translated to the outside of the equipment corridor 11, and the rear end of the wind guide wall 2 is flush with the outlet of the tunnel 1, as shown in Figure 8 The transverse or longitudinal collision guide fan 4 is opened, and the polluted air flow is blown to the low place in cooperation with the monsoon.

[0088] The inner end of the device refers to the inside of the tunnel 1, that is, the direction of the vehicle tail, that is, the rear end, and the front end refers to the direction outside the tunnel 1, that is, the direction of the vehicle head; The inner side of the wind guide wall 2 refers to the side facing the road, and the outer side of the wind guide wall 2 refers to the side facing away from the road and blocking the external crosswind; The center refers to the center of the road, the front and rear directions refer to the direction of the vehicle on the road, and the left and right sides refer to the left and right sides of the road where the vehicle travels. The indicated direction or position relationship is based on the direction or position relationship shown in the drawings, which is only for the convenience of describing the utility model and simplifying the description, and is not intended to indicate or imply that the indicated device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the utility model.

[0089] Although the specific embodiments of the utility model are described above, those skilled in the art should understand that the specific examples described by us are only illustrative, not for limiting the scope of the utility model, and equivalent modifications and changes made by those skilled in the art in accordance with the spirit of the utility model should be covered within the scope of protection of the claims of the utility model.

Claims

1. A tunnel exit pollutant diversion dispersal system characterized by, The device comprises a tunnel (1), a wind guide wall (2), a base (3), a lateral butt guiding fan (4), a longitudinal butt guiding fan (41) and an anti-tilting frame (5); The tunnel (1) is provided with a device corridor (11) on both sides, the device corridor (11) is a straight channel, and the device corridor (11) is parallel to the axis at the outlet of the tunnel (1); The base (3) is a long strip-shaped base arranged in a straight line, the top of the base (3) is provided with a track (31), the track (31) completely covers the top of the base (3) in the front-rear direction; each device corridor (11) is internally provided with a base (3), the base (3) is internally provided with a base (3), and the base (3) is externally provided with a base (3); the depth of the device corridor (11) is less than the length of the base (3) extending outside the device corridor (11); The wind guide wall (2) is a vertical plate structure, each device corridor (11) on both sides is provided with a wind guide wall (2), the bottom of the wind guide wall (2) is uniformly provided with a plurality of wheel pairs (21), and the wind guide wall (2) is arranged on the track (31) through the wheel pairs (21) and can be rolled and translated; The tunnel (1) is provided with a plurality of lateral butt guiding fans (4) and a plurality of longitudinal butt guiding fans (41) on both sides, and the lateral butt guiding fans (4) and the longitudinal butt guiding fans (41) are arranged between the wind guide walls (2) and the roads on both sides; The anti-tilting frame (5) is a door frame structure, the wind guide wall (2) is transversely arranged in the anti-tilting frame (5), the bottom of the top beam of the anti-tilting frame (5) is further hung with a hanging rail (51), the top of the wind guide wall (2) is further provided with a plurality of hanging wheels (52), the hanging wheels (52) are rolled and hung on the hanging rail (51), and the wind guide wall (2) is hung below the hanging rail (51) through the hanging wheels (52).

2. A tunnel exit pollutant dispersal system according to claim 1, wherein: A concrete retaining wall (12) is poured between the tunnel (1) and the device corridor (11), the retaining wall (12) is isolated between the tunnel (1) and the device corridor (11), the device corridor (11) is open at the outer end and closed at the inner end, and the device corridor (11) is opened into the mountain body with a depth greater than the length s of the wind guide wall (2), and the length difference is not more than 3 meters.

3. A tunnel exit pollutant diversion dispersal system according to claim 1, wherein: The track (31) is two parallel rails, and the distance between the two tracks (31) is not more than 0.5 meters.

4. A tunnel exit pollutant diversion dispersal system according to claim 1, wherein: The bottom of the wind guide wall (2) is uniformly provided with a plurality of bearings (22), and the bearings (22) penetrate the wind guide wall (2) in the left-right direction, and the axes of the bearings (22) on the same wind guide wall (2) are in the same plane; The wheel pairs (21) at the front and rear ends of the same wind guide wall (2) are further provided with driving motors; The total length s of the wind guide wall (2) is 15-80 meters, and the height h of the wind guide wall (2) is 5-8 meters.

5. A tunnel exit pollutant diversion dispersal system according to claim 1, wherein: Each lateral butt guiding fan (4) and longitudinal butt guiding fan (41) is provided with a brake wheel at the bottom.

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