Method for setting a tunnel hole outside light smoke barrier system based on the dillard effect

Abstract

The present application relates to a kind of tunnel hole outside light smoke blocking system setting method based on the Dandar effect, belong to the field of tunnel operation safety.The method is to set two sets of light smoke blocking system on the tunnel entrance and front road section, combined with the sound-light alarm on both sides of road is used;Linear section setting mode: the distance between light smoke blocking system is set according to one times stopping sight distance;Curved section setting mode: curvature radius is large, one times stopping sight distance is not affected by roadside shelter, the spacing between light smoke blocking system is greater than one times stopping sight distance;Curvature radius is small, one times stopping sight distance is not affected by roadside shelter, according to the spacing of one times stopping sight distance, the setting of hole outside and adjacent two light smoke blocking system is carried out;At the same time, the setting spacing of sound-light alarm is set according to the spacing of 80% of linear section;Curvature radius is small, one times stopping sight distance is affected by roadside shelter, and strengthening warning sign is set in front of tunnel.The present application can realize fast, safe and effective blocking vehicle.

Description

TECHNICAL FIELD

[0001] The present application belongs to the field of tunnel operation safety, and relates to a tunnel hole outside light smoke blocking system setting method based on the Dinger effect. BACKGROUND

[0002] The increase in the number and operating mileage of highway tunnels puts higher requirements on safe operation, especially the increase in the number of long and large tunnels. Once a major event such as a fire occurs in a tunnel, the continued entry of vehicles outside the tunnel leads to congestion of vehicles in the tunnel, which causes the event to escalate. Therefore, when a major event such as a fire occurs in a tunnel, blocking vehicles outside the tunnel in the first time is the most effective way to reduce the risk level of the accident, avoid congestion of vehicles and personnel in the tunnel, and ensure the rapid evacuation of personnel in the tunnel.

[0003] Therefore, the technical team has developed an all-weather visible light smoke blocking system based on the Dinger effect, which has the advantage of being visible from a distance in a three-dimensional space and can effectively block vehicles from continuing to move forward.

[0004] Due to different types of highway tunnel alignment, slope, design speed, and surrounding environment, the influence on the physiological vision of drivers and the parking behavior is different. As a new safety blocking technology, in order to better realize the effective improvement of the tunnel operation safety level under emergency situations, how to set the technology to meet the physiological vision of drivers and the safe parking behavior of different tunnel types is currently a blank. SUMMARY

[0005] Therefore, the purpose of the present application is to provide a tunnel hole outside light smoke blocking system setting method based on the Dinger effect, which solves the problem of how to set the system reasonably for different tunnels when using the light smoke blocking technology based on the Dinger effect in the current tunnel under emergency situations, and can achieve rapid, safe and effective blocking of vehicles.

[0006] To achieve the above purpose, the present application provides the following technical scheme:

[0007] A tunnel hole outside light smoke blocking system setting method based on the Dinger effect, two sets of light smoke blocking systems are arranged on the tunnel entrance and the front road section, and are used in combination with the sound and light alarm on both sides of the road; the road section includes a straight line section and a curved line section;

[0008] Straight line section setting mode: for the case that the front of the tunnel is a straight line section, the distance between the light smoke blocking system 2 on the road section and the light smoke blocking system 3 at the tunnel entrance is set as one times the stopping sight distance;

[0009] The curved line section setting mode includes the following three cases:

[0010] 1) Curved road sections with a large radius of curvature where the stopping sight distance is not affected by roadside obstruction;

[0011] The distance between the light smoke blocking system 2 on the road section and the light smoke blocking system 3 at the tunnel entrance is greater than one parking sight distance;

[0012] 2) Curved road sections with a small radius of curvature, where the stopping sight distance is not affected by roadside obstruction;

[0013] When the radius of curvature at the design speed is less than the minimum radius of curvature at the corresponding vehicle speed, the light and smoke blocking system outside the tunnel and the two adjacent tracks are set at a spacing of one parking sight distance; at the same time, in order to ensure that the driver can stop quickly and safely within the parking sight distance, the spacing of the sound and light alarms is set at 80% of the spacing of the straight road section.

[0014] 3) Curved road sections with a small radius of curvature where the stopping sight distance is affected by roadside obstruction;

[0015] Enhanced warning signs are installed ahead of the tunnel to ensure drivers noticeably slow down before seeing the light and smoke warning information. This allows the light and smoke warning information to effectively deter drivers within one stopping sight distance after slowing down. The specific installation method is as follows:

[0016] ① Determine the maximum distance L that can identify the light and smoke blocking system at the tunnel entrance based on the radius of curvature. max ;

[0017] ② Set the maximum distance L max Use one parking sight distance to determine the vehicle speed approaching that location. ;

[0018] ③ According to vehicle speed Determine the design speed Safety reduced to speed Required distance d b ;

[0019] ④ According to distance d b Determine the appropriate method for setting up enhanced warning signs that aligns with the needs and patterns of speed reduction.

[0020] Furthermore, the light smoke blocking system includes a smoke generator capable of producing a long-distance visible light curtain, a laser, a wind direction and speed meter, strobe lights, an information board, a loudspeaker, an intelligent cabinet, and a control system.

[0021] Furthermore, in the straight road section setup, the distance between the light and smoke blocking system 2 on the road section and the light and smoke blocking system 3 at the tunnel entrance... Satisfy the following formula:

[0022]

[0023] In the formula, is the reaction time of the driver and the braking time of the vehicle, is the running speed of the vehicle, is the acceleration of gravity, is the road surface friction coefficient, is the road slope.

[0024] Further, in the curve section setting mode, in the case of a curve section where the one-time stopping sight distance is not affected by the roadside shelter, the radius and the speed relationship of the one-time stopping sight distance and the radius of curvature of the curve section at the design speed satisfies formula (2), that is, at the one-time stopping sight distance, the driver's line of sight direction can completely see the light smoke barrier information;

[0025]

[0026] In the formula, is the reaction time of the driver and the braking time of the vehicle, is the running speed of the vehicle, is the acceleration of gravity, is the road surface friction coefficient, is the road slope, is the radius of curvature of the curve section, w is the width of the road.

[0027] Further, in the curve section setting mode, the radius of curvature is small, that is, formula (3) is satisfied:

[0028]

[0029] In the formula, is the reaction time of the driver and the braking time of the vehicle, is the running speed of the vehicle, is the acceleration of gravity, is the road surface friction coefficient, is the road slope, is the radius of curvature of the curve section, w is the width of the road, is the acceleration.

[0030] Further, in the curve section setting mode, the radius of curvature is small, in the case of a curve section where the one-time stopping sight distance is affected by the roadside shelter, the maximum distance L max The calculation formula is:

[0031]

[0032] In which, Distance from the light smoke barrier system 2 on the road section when the driver sees the light smoke barrier information again after passing the light smoke barrier system 2 on the road section. Distance from the light smoke barrier system 3 at the tunnel entrance when the driver sees the light smoke barrier information again after passing the light smoke barrier system 2 on the road section.

[0033] Further, in the curved road section setting mode, in the case that the one-time stopping sight distance of the curved road section with a small radius of curvature is affected by the roadside shelter, the vehicle speed The calculation formula is:

[0034]

[0035] Further, in the curved road section setting mode, in the case that the one-time stopping sight distance of the curved road section with a small radius of curvature is affected by the roadside shelter, the distance d b The calculation formula is:

[0036]

[0037] In the formula, is the safe braking deceleration of the vehicle in the deceleration process, is the design speed.

[0038] Further, in the curved road section setting mode, in the case that the one-time stopping sight distance of the curved road section with a small radius of curvature is affected by the roadside shelter, the setting mode of the strengthened warning sign according to the distance d b is determined to meet the deceleration requirements and rules, specifically: an audible and light alarm is used, the installation interval d and the alarm sound change frequency f should meet the following relationship:

[0039]

[0040] In the formula, is the driving speed in the deceleration process, which is between the design speed and the braking speed , and belongs to the change value, therefore, is the installation interval of the audible and light alarm, and the installation interval and the alarm sound change frequency can be adjusted according to The installation interval can also be installed in sections, and the alarm sound change frequency can be controlled by the control system by monitoring the vehicle speed, so that the alarm sound change frequency received by the driver in the deceleration process always meets formula (7).

[0041] The beneficial effects of the present application are:

[0042] (1) The method of the present application combines the tunnel linear structure, can meet the physiological vision of the driver and the safe parking behavior, and can achieve the effect of the driver quickly obtaining and identifying the accident information at a long distance to achieve fast and safe parking.

[0043] (2) The method of the present application can obtain the dynamic visual field and parking visual distance conditions of the driver on different linear road sections, meet the system setting method of the light smoke blocking technology characteristics, and through the method, the system can play a role in quickly and safely blocking the vehicle.

[0044] (3) The method of the present application has the intelligent linkage control characteristics of the light smoke blocking system combined with the linear characteristics of the road section where the tunnel is located, can automatically control the system sound and light alarm decibel, frequency, light smoke concentration, brightness and angle according to the curvature, slope of the road section in front of the tunnel and the straight line identification distance of the driver and the light smoke blocking system, so as to realize the quick diversion and safe blocking control of the vehicle in the tunnel with different road structure once a major accident such as fire occurs.

[0045] Other advantages, objects and features of the present application will be set forth in part in the description which follows, and in part will become apparent to those skilled in the art upon examination of the following or can be learned from practice of the present application. The objects and other advantages of the present application can be realized and attained by the methods and instrumentalities particularly pointed out in the description below. BRIEF DESCRIPTION OF DRAWINGS

[0046] In order to make the objects, technical solutions and advantages of the present application clearer, the preferred detailed description of the present application will be made below in combination with the drawings, in which:

[0047] Figure 1 The figure is a setting method diagram of the light smoke blocking system;

[0048] Figure 2 The figure is the opening effect of the light smoke blocking system;

[0049] Figure 3 The figure is a system setting diagram of a road section with a large curvature radius;

[0050] Figure 4 The figure is a system setting diagram of a road section with a small curvature radius and no obstruction on the roadside;

[0051] Figure 5 The figure is a system setting diagram of a road section with a small curvature radius and obstruction on the roadside;

[0052] Figure 6 The figure is a flowchart of the setting method of the tunnel hole outside light smoke blocking system based on the Dand effect of the present application. DETAILED DESCRIPTION

[0053] Following, the advantages and effects of the present application can be easily understood by those skilled in the art from the disclosure of the specification. The present application can also be implemented or applied by other different specific embodiments, and various modifications or changes can be made based on different views and applications without departing from the spirit of the present application. It should be noted that the diagrams provided in the following embodiments only illustrate the basic concept of the present application in a schematic manner, and the following embodiments and features in the embodiments can be combined with each other without conflict.

[0054] The accompanying drawings are only used for illustrative purposes, and the representation is only a schematic diagram, not a physical diagram, and cannot be understood as a limitation of the present application. In order to better illustrate the embodiments of the present application, some components in the drawings may be omitted, enlarged or reduced, and do not represent the actual size of the product. It is understandable for those skilled in the art that some well-known structures and their descriptions in the drawings may be omitted.

[0055] The same or similar reference numerals in the drawings of the embodiments of the present application correspond to the same or similar components; in the description of the present application, it should be understood that if the terms "upper", "lower", "left", "right", "front", "back" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore the terms describing the positional relationship in the drawings are only used for illustrative purposes, and cannot be understood as a limitation of the present application. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0056] Please refer to Figures 1-6 , the setting method of the tunnel hole outside light smoke blocking system based on the Dandah effect is shown in Figure 1 , according to the characteristics of light smoke blocking technology, two sets of light smoke blocking systems are arranged at the tunnel entrance and the front road section, and the effect after the system is started is shown in Figure 2 .

[0057] The present application mainly formulates a system installation method that can make the driver visible and recognizable within a safe distance and realize safe parking in different linear routes and tunnels according to the characteristics of light smoke blocking technology. Specifically, it is divided into straight road sections and curved road sections:

[0058] (1) Straight road section setting method

[0059] The light smoke barrier technology has the characteristics of lateral stereoscopic long-distance visibility, and the light curtain formed by the technology does not cause physical collision with the vehicle, and even if the vehicle does not stop in time and passes through the light curtain layer, there will be no hard collision stress. However, in the setting of the system, the most unfavorable working condition should be set, that is, at the design speed, the driver should at least recognize the light smoke barrier information at one times the stopping sight distance; under normal circumstances, the driver should start to slow down when seeing the light smoke barrier system 2 on the road section at one times the stopping sight distance, and stop before the light smoke barrier system 2 on the road section, but at the same time, there may be individual vehicles ignoring the barrier information and continuing to move forward, therefore, also according to the most unfavorable working condition, the distance between the light smoke barrier system 2 on the road section and the light smoke barrier system 3 at the tunnel entrance is set as one times the stopping sight distance, so as to enhance the stopping barrier effect. Therefore, for the case that the straight road section in front of the tunnel, the distance between the light smoke barrier system 2 on the road section and the light smoke barrier system 3 at the tunnel entrance should satisfy the following formula:

[0060]

[0061] In the formula, is the reaction and braking time of the driver, unit: s; is the running speed of the vehicle, unit: m / s; is the gravity acceleration, unit: m / s 2 ; is the road surface friction coefficient, which is determined according to the vehicle speed and the road surface condition; is the road slope. The reaction time and braking time of the vehicle in the plain area are 2.5s.

[0062] Since the straight visible distance of the technology is greater than one times the stopping sight distance, for the straight road section, the distance between the vehicle and the light smoke barrier system 2 on the road section It itself satisfies the condition of being greater than one times the stopping sight distance. The sound and light alarm installed on the two sides of the road can be arranged at a certain distance from the tunnel entrance 500m according to the traffic engineering safety warning requirements, so as to play a warning and speed reduction role.

[0063] (2) Setting method of the curve road section

[0064] When the road section in front of the tunnel is a curve, different roadside environments will affect whether the light smoke barrier information in one times the stopping sight distance is visible; in addition, whether the light smoke barrier information in one times the stopping sight distance is visible also exists in the curve road section with different radii of curvature. Therefore, the setting method of the light smoke barrier system for different curve road sections is proposed, so that when the road section in front of the tunnel is a curve, the system can also quickly and safely play an effective barrier role for the vehicle when an emergency occurs in the tunnel. The specific method is as follows:

[0065] 1) Curve radius is large, one-time stopping sight distance is not affected by roadside shelter curve section;

[0066] As Figure 3 shown. At the design speed, the one-time stopping sight distance and the curve radius of the section meet the radius and speed relationship of formula (2), that is, at one-time stopping sight distance, the driver's line of sight direction can see the light smoke barrier information completely. At this time, the system setting method of the section is consistent with the straight line section method, that is, the distance between the light smoke barrier system 2 on the section and the light smoke barrier system 3 at the tunnel portal is greater than one-time stopping sight distance, and under the condition of meeting the condition, the light smoke barrier system 2 on the section and the light smoke barrier system 3 at the tunnel portal can be seen outside one-time stopping sight distance.

[0067]

[0068] In the formula, is the curve radius of the curve section, w is the width of the road.

[0069] For example: on the section with a slope of 0, corresponding to different design speeds, the curve radius is greater than the minimum curve radius in Table 1, the distance between the barrier system 3 and the tunnel portal and the distance between the barrier systems 2 and 3 can be set according to the interval of one-time stopping sight distance, and the corresponding relationship between different speeds and the minimum curve radius under other slopes can be obtained from formula (2).

[0070] Table 1 Minimum curve radius and design speed relationship that can be set according to one-time stopping sight distance

[0071]

[0072] 2) Curve radius is small, one-time stopping sight distance is not affected by roadside shelter curve section;

[0073] As Figure 4 shown, when the curve radius of the curve section is small, that is, under the condition of formula (3), but there is no high slope and other obstacles on the roadside, the driver's line of sight direction may be affected by the roadside guardrail and other low boundaries, but based on the characteristics of the three-dimensional space of the light smoke barrier information being visible at a long distance, most of the light smoke barrier system can still be seen in the driver's field of view. Therefore, the setting interval between the light smoke barrier systems 2 and 3 can still be greater than one-time stopping sight distance, that is, when the curve radius is less than the value specified in Table 1 at the design speed, due to the fact that there is no high slope and other obstacles on the road to block the vision of the three-dimensional space, the interval between the light smoke barrier system outside the portal and the adjacent two light smoke barrier systems can still be set according to one-time stopping sight distance.

[0074] At the same time, in order to ensure that the driver can park quickly and safely within the stopping sight distance, the setting distance of the sound and light alarm can be set according to 80% of the linear section.

[0075]

[0076] 3) the curve section with a small radius of curvature, which is affected by the roadside shelter within one stopping sight distance;

[0077] As shown in Figure 5 , when the curve section has a small radius of curvature and is also under the condition of formula (3), but at the same time, there is a high slope or other obstacles on the roadside to block the driver's view, there is a one stopping sight distance at which the driver cannot see the light smoke blocking information, and once the driver sees the light smoke blocking information, the distance from the blocking system is less than the safe stopping sight distance, that is, L1 or L2 is less than one stopping sight distance SD at this time. For this situation, a warning sign should be set in front of the tunnel to make the driver have a significant deceleration behavior before seeing the light smoke blocking information, so that the light smoke blocking information can play a role in safely blocking the driver within one stopping sight distance after deceleration.

[0078] Specifically as follows:

[0079] ① According to the radius of curvature, determine the maximum distance that can identify the tunnel portal light smoke blocking system;

[0080]

[0081] Table 2 shows the maximum distance that can identify the blocking system corresponding to different radii of curvature that cannot meet the stopping sight distance under the current highway design speed.

[0082] Table 2 Relationship between radius of curvature and maximum identifiable distance

[0083]

[0084] ② Determine the speed of the vehicle arriving at the position as one stopping sight distance L max . .

[0085] As shown in Table 3, the corresponding vehicle speed v' when the slope is 0, and the vehicle speed under other slope conditions can be calculated by formula (5).

[0086]

[0087] Table 3 Vehicle speed requirement corresponding to stopping sight distance

[0088]

[0089] ③ According to the vehicle speed determine the design speed Safe deceleration distance Required distance d b Table 4 shows the required distance when the vehicle speed on the road section is reduced from 120 km / h to each speed shown in Table 3, and the required distance when the vehicle speed is reduced from other design speeds can also be obtained by formula (6).

[0090]

[0091] In the formula, is the safe braking deceleration of the vehicle during deceleration, with the unit of m / s 2 ; is the design speed.

[0092] Table 4 Safe braking distance required when reduced from 120 km / h to each speed

[0093]

[0094] 4. According to the distance d b determined to meet the deceleration requirements and rules of setting the enhanced warning sign, which can usually use the sound and light alarm, the installation interval d and the alarm sound variation frequency f should satisfy the following relationship:

[0095]

[0096] In the formula, is the driving speed during deceleration, which is between the design speed and the braking speed , and belongs to the variable value, therefore, the sound and light alarm installation interval and the alarm sound variation frequency can be adjusted according to , the installation interval can be installed in sections, and the alarm sound variation frequency can be controlled by the control system by monitoring the vehicle speed, so that the alarm sound variation frequency received by the driver during deceleration always satisfies formula (7).

[0097] As shown in Figure 6 , the setting method of the tunnel hole outside light smoke blocking system based on the Tyndall effect provided by the present application specifically includes the following steps:

[0098] Step 1: According to the design speed and the parameters of the road section where the tunnel is located (including the curvature radius, slope, road width and friction coefficient), the setting mode of the straight line or curve section is determined.

[0099] Step 2: Determine the maximum recognition distance according to whether the one-time parking sight distance blocking information is visible and whether there is a high slope on the roadside to block the blocking information, and then determine the deceleration requirement.

[0100] Step 3: Determine the system setting method, including light smoke blocking system concentration control, light smoke blocking system setting distance, enhanced system setting distance, and enhanced alarm flashing and sound intensity control frequency.

[0101] The characteristics of the present application: using the characteristics of the three-dimensional space of the light smoke blocking system, different setting methods are proposed for different linear and slope of the tunnel and different surrounding shielding conditions, so that the effect of quickly and safely blocking the vehicle can be achieved when an emergency occurs in the tunnel. According to the linear, slope and design speed of the route, the setting distance of the two blocking systems at the tunnel entrance and the road section in front of the tunnel entrance can be determined, and the safety deceleration requirement and the setting and linkage control requirement of the enhanced alarm system under the safety deceleration can be determined according to the surrounding shielding condition. Thus, technical support can be provided for the application of the light smoke blocking system in different types of tunnels.

[0102] Based on the advantages of intuitive and wide applicability of light smoke blocking information, the present technology can be used to install in different types of tunnel sections, determine the installation method according to the actual road environment, and realize the information display linkage of different installation methods through the control system, so that no matter what kind of tunnel in the road section, once an emergency occurs in the tunnel, the setting method of the present technology is adopted and the system is started, which can immediately achieve the effect of quickly and safely blocking and controlling the vehicle on site. At the same time, as a kind of on-site active intelligent control method, the implementation of the technology can be linked with the tunnel intelligent control platform which is being popularized at present, realize the control linkage of light smoke blocking system in different types of road sections under the purpose of safety deceleration, and thus improve the integrated control of emergency control system and the rapid and effective and intelligent control level of safety control.

[0103] The advantages of the present application are: 1) strong pertinence. The design method is formed according to the characteristics of the light smoke blocking system, which fills the method blank of the innovative technology in the application field and is the first in the world; 2) strong system application guidance. Different setting methods are proposed for different types of tunnel sections, which can quickly and safely block the vehicle in an emergency and reduce the risk of accidents; 3) the method of the present application can realize the control strength and frequency of different components of the system (such as light smoke generator and sound and light alarm) and achieve the effect of quickly and safely decelerating the vehicle in different types of tunnel sections and blocking the vehicle outside the tunnel hole; 4) the method considers the advantages of three-dimensional space and long distance visibility of light smoke blocking information, simplifies the setting method of curve sections with different curvature radii without high slope and other shielding effects, and is beneficial to the efficiency of the design and application of the present application.

[0104] Finally, it is to be explained that the above embodiments are only used to illustrate the technical solutions of the present application but not to limit the present application. Although the present application has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present application can be modified or equivalently replaced without departing from the purpose and scope of the present application, and all of them should be covered in the scope of the claims of the present application.

Claims

1. A method for setting up a tunnel exterior light and smoke blocking system based on the Tyndall effect, characterized in that, Two sets of light and smoke blocking systems are installed at the tunnel entrance and on the road ahead, in conjunction with the sound and light alarms on both sides of the road; the road section includes straight sections and curved sections. Setting method for straight road sections: When there is a straight road section in front of the tunnel, the distance between the light and smoke blocking system on the road section and the light and smoke blocking system at the tunnel entrance shall be set at one parking sight distance; There are three ways to set up curved road sections: 1) Curved road sections with large radius of curvature, where the stopping sight distance is not affected by roadside obstruction; The distance between the light smoke blocking system on the road section and the light smoke blocking system at the tunnel entrance is greater than one parking sight distance; 2) Curved road sections with small radius of curvature, where the stopping sight distance is not affected by roadside obstruction; When the radius of curvature at the design speed is less than the minimum radius of curvature at the corresponding vehicle speed, the light and smoke blocking system outside the tunnel and the two adjacent tracks are set at a spacing of one parking sight distance; at the same time, in order to ensure that the driver can stop quickly and safely within the parking sight distance, the spacing of the sound and light alarms is set at 80% of the spacing of the straight road section. 3) Curved road sections with small radius of curvature where the stopping sight distance is affected by roadside obstruction; Enhanced warning signs are installed ahead of the tunnel to ensure drivers noticeably slow down before seeing the light and smoke warning information. This allows the light and smoke warning information to effectively deter drivers within one stopping sight distance after slowing down. The specific installation method is as follows: ① Determine the maximum distance L that can identify the light and smoke blocking system at the tunnel entrance based on the radius of curvature. max ; ② Set the maximum distance L max Use one parking sight distance to determine the vehicle speed approaching that location. ; ③ According to vehicle speed Determine the design speed Safety reduced to speed Required distance d b ; ④ According to distance d b Determine the appropriate method for setting up enhanced warning signs that aligns with the needs and patterns of speed reduction.

2. The method for setting up a tunnel exterior light and smoke blocking system based on the Tyndall effect according to claim 1, characterized in that, The light smoke blocking system includes a smoke generator capable of producing a long-distance visible light curtain, a laser, a wind direction and speed meter, strobe lights, an information board, a loudspeaker, an intelligent cabinet, and a control system.

3. The method for setting up a tunnel exterior light and smoke blocking system based on the Tyndall effect according to claim 1, characterized in that, In the straight road section setup, the distance between the light and smoke blocking system on the road section and the light and smoke blocking system at the tunnel entrance. Satisfy the following formula: In the formula, For the driver's reaction and vehicle braking time, For vehicle operating speed, It is the acceleration due to gravity. The coefficient of friction of the road surface. This refers to the road slope.

4. The method for setting up a tunnel exterior light and smoke blocking system based on the Tyndall effect according to claim 1, characterized in that, In the setting of curved road sections, in the case of curved road sections with large curvature radius and no roadside obstruction affecting the one-time stopping sight distance: at the design speed, the one-time stopping sight distance and the curvature radius of the curved road section satisfy the relationship between the radius and the speed of equation (2), that is, at the one-time stopping sight distance, the driver's line of sight can fully see the light and smoke obstruction information. In the formula, For the driver's reaction and vehicle braking time, For vehicle operating speed, It is the acceleration due to gravity. The coefficient of friction of the road surface. For road slope, Let be the radius of curvature of the curved road segment. w The width of the road.

5. The method for setting up a tunnel exterior light and smoke blocking system based on the Tyndall effect according to claim 1, characterized in that, In the setting of curved road sections, the radius of curvature is small, that is, it satisfies equation (3): In the formula, For the driver's reaction and vehicle braking time, For vehicle operating speed, It is the acceleration due to gravity. The coefficient of friction of the road surface. For road slope, Let be the radius of curvature of the curved road segment. w The width of the road.

6. The method for setting up a tunnel exterior light and smoke blocking system based on the Tyndall effect according to claim 5, characterized in that, In the setting of curved road sections, for curved road sections with small radii of curvature and where the stopping sight distance is affected by roadside obstruction, the maximum distance L is... max The calculation formula is: in, This indicates the distance between the driver and the light and smoke blocking system on the road section when the driver sees the light and smoke blocking information; This indicates the distance from the tunnel entrance light and smoke barrier system when the driver sees the light and smoke barrier information again after passing the light and smoke barrier system on the road section.

7. The method for setting up a tunnel exterior light and smoke blocking system based on the Tyndall effect according to claim 5, characterized in that, In the configuration of curved road sections, when the radius of curvature is small and the stopping sight distance is affected by roadside obstruction, the vehicle speed... The calculation formula is: 。 8. The method for setting up a tunnel exterior light and smoke blocking system based on the Tyndall effect according to claim 5, characterized in that, In the setting of curved road sections, when the radius of curvature is small and the stopping sight distance is affected by roadside obstruction, the distance... d b The calculation formula is: In the formula, To ensure safe braking and deceleration of the vehicle during deceleration. Design speed.

9. The method for setting up a tunnel exterior light and smoke blocking system based on the Tyndall effect according to claim 5, characterized in that, In the setting of curved road sections, for curved road sections with small radii of curvature and where the stopping sight distance is affected by roadside obstruction, the distance should be considered. d b The method for installing enhanced warning signs that meets the requirements and patterns of deceleration should be determined, specifically: using audible and visual alarms, with appropriate installation spacing. d and alarm sound change frequency f The following relationship should be satisfied: In the formula, For the size to be at the design speed during deceleration and braking speed The speed between these intervals is a variable value; therefore, the installation spacing of the audible and visual alarms, and the frequency of the alarm sound change, are important factors. All based on Adjustments were made to the installation spacing. It also adopts a segmented installation, with varying alarm sound frequencies. The control system monitors the vehicle speed to control the vehicle, ensuring that the frequency of the alarm sound received by the driver during deceleration always satisfies equation (7).

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