Safe Induction System for Extra-long Spiral Highway Tunnels

Abstract

The present invention relates to a safety guidance system for an extra-long spiral highway tunnel. The extra-long spiral highway tunnel comprises an entrance reinforcement section, a transition gradient section, a basic curve section, and an exit reinforcement section. The system includes a spiral reflective ring, a spiral reflective strip, a spiral tunnel travel point confirmation device, a spiral inner belt line, a spiral outer belt line, a curved delineator, a gradient line guidance marker, and a wavy delineator. The present invention effectively reconstructs a spiral visual reference system within the tunnel, alleviating driver fatigue from prolonged driving on curved and sloping sections, and enhancing a sense of safety, comfort, and rhythm in the extra-long spiral tunnel. The present method is suitable for extra-long spiral highway tunnels with speed limits of 60 km / h or above.

Description

Technical Field

[0001] The present invention relates to the technical field of highway tunnel safety facilities, and more particularly to a safety guidance system for an extra-long spiral highway tunnel. Background Art

[0002] In recent years, my country's expressway construction has experienced rapid growth. However, due to various constraints, such as topographical and technical factors, some areas have adopted innovative designs and construction methods, using spiral tunnels to overcome large elevation differences within a short distance. Examples include the Tuowushan and Ganhaizi spiral tunnels on the Ya'an-Xichang Expressway, as well as the Jinjiazhuang extra-long spiral tunnel. However, spiral tunnels, characterized by their small radius, monotonous environment, lack of visual reference, and unfavorable linear configurations with long, continuous curves and slopes, can easily cause drivers to experience psychological distress and misperceptions of curves and slopes. This can lead to decreased psychological and physiological function and driving performance after extended driving, hindering driver performance and posing significant safety risks.

[0003] The safety induction system can enhance the driver's sense of driving safety, comfort and rhythm, so that the driver will consciously or unconsciously seek a rhythm that makes him feel safe and comfortable according to road conditions, traffic environment, etc. By setting up a safety induction system in the extra-long spiral tunnel environment, the driver's visual environment can be effectively improved while relieving driving fatigue, improving the driver's ability to perceive vehicle speed and maintain distance, and enhancing driving comfort. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a safety guidance system for extra-long spiral highway tunnels, which can enhance the driver's sense of speed, direction, distance and position during driving, alleviate negative emotions during driving in spiral tunnels, reduce vehicle deviation caused by side wall effects, and meet the driver's sense of security needs by reconstructing the visual reference system of the spiral tunnel, thereby helping to achieve driving safety and comfort in extra-long spiral tunnels.

[0005] The technical solution adopted by the present invention to solve the technical problem is to construct a safety guidance system for an extra-long spiral highway tunnel, wherein the extra-long spiral highway tunnel comprises: an entrance reinforcement section, a transition gradient section, a basic curve section, and an exit reinforcement section, and comprises a spiral reflective ring, a spiral reflective strip, a spiral tunnel travel point confirmation device, a spiral inner belt line, a spiral outer belt line, a curved contour mark, a gradient line guidance mark, and a wavy contour mark;

[0006] The spiral reflective ring is an arched arc set from the inner side of the tunnel to the outer side of the tunnel, the spiral inner belt line is set on the inner side of the tunnel, the spiral outer belt line is set on the outer side of the tunnel, the spiral outer belt line includes two upper and lower parts, including a high spiral belt line and a low spiral belt line, the spiral reflective strips are set on both sides of the tunnel, the spiral reflective strip set on the left side of the tunnel extends from the spiral inner belt line to the tunnel ground, and is set in the tunnel. The spiral reflective strip on the right side extends from the high spiral belt line to the tunnel ground. A curved contour marker is set at the intersection of the spiral reflective strip and the spiral inner belt line. A curved contour marker is set at the intersection of the spiral reflective strip and the high spiral belt line. A curved contour marker is set at the intersection of the spiral reflective strip and the low spiral belt line. The gradient line induction marker is set on the high spiral belt line. The wavy contour marker is set on the side walls of the inspection road on the inside and outside of the curve of the tunnel;

[0007] The spiral tunnel travel point confirmation device includes a spiral color separation reflective ring and a road surface arrow-shaped guide mark. The spiral color separation reflective ring is an arched arc set from the inner side of the tunnel curve to the outer side of the curve, and the road surface arrow-shaped guide mark is set on the road surface in the tunnel.

[0008] According to the above scheme, the spiral reflective ring is a spiral arched reflective ring. The spiral reflective ring is located on the inner side of the curve in the tunnel, forming an angle of 100°~120° with the tunnel road surface in the driving direction and has a width of 15cm~20cm. The spiral reflective ring is located on the outer side of the curve in the tunnel, forming an angle of 60°~80° with the tunnel road surface in the driving direction, and the outer side of the curve gradually widens in a parabolic form to a bottom width of 35cm~40cm.

[0009] According to the above scheme, the spiral reflective strips arranged between the spiral inner belt line and the tunnel floor and the spiral reflective strips arranged between the high-position spiral belt line and the tunnel floor are arranged asymmetrically. The spiral reflective strips are spiral arched reflective strips. The spiral reflective strips arranged on the inner side are parallel to the inner section of the spiral reflective ring tunnel, and the spiral reflective strips arranged on the outer side are parallel to the outer section of the spiral reflective ring tunnel. The inner side of the curve of the spiral reflective strip is 7cm~9cm wide and the outer side is 10~12cm wide. The ratio of the spiral reflective rings and the spiral reflective strips located in the exit reinforcement section and the entrance reinforcement section is 1:3, and the ratio of the spiral reflective rings and the spiral reflective strips located in the transition gentle section and the basic section of the curve is 1:2.

[0010] According to the above scheme, the extra-long spiral highway tunnel includes a first travel section, a second travel section, a third travel section and a fourth travel section, and the spiral tunnel travel point confirmation device is respectively arranged in the first travel section, the second travel section, the third travel section and the fourth travel section; the first travel section is from the spiral tunnel entrance to the 1 / 4 point of the tunnel travel, the colored part of the spiral color-separated reflective ring is orange, and the road surface arrow-type guidance mark is orange; the second travel section is from the 1 / 4 point of the tunnel travel to the 1 / 2 point of the tunnel travel, the colored part of the spiral color-separated reflective ring is yellow, and the road surface arrow-type guidance mark is yellow; the third travel section is from the 1 / 2 point of the tunnel travel to the 3 / 4 point of the tunnel travel, the colored part of the spiral color-separated reflective ring is blue, and the road surface arrow-type guidance mark is blue; the fourth travel section is from the 3 / 4 point of the tunnel travel to the tunnel exit, the colored part of the spiral color-separated reflective ring is green, and the road surface arrow-type guidance mark is green.

[0011] According to the above scheme, the spiral color separation reflective ring is respectively arranged at the 1 / 4 stroke point of the spiral tunnel, the 1 / 2 stroke point of the spiral tunnel, the 3 / 4 stroke point of the spiral tunnel and the 4 / 4 stroke point of the spiral tunnel; the colored portion of the spiral color separation reflective ring arranged at the 1 / 4 stroke point of the spiral tunnel is orange, and the colored portion of the spiral color separation reflective ring starts from the bottom outside the curve to the 1 / 4 length of the spiral color separation reflective ring; the colored portion of the spiral color separation reflective ring arranged at the 1 / 2 stroke point of the spiral tunnel is yellow, and the colored portion of the spiral color separation reflective ring starts from the bottom outside the curve to the 1 / 2 length of the spiral color separation reflective ring. The color portion of the spiral color separation reflective ring provided at the 3 / 4 travel point of the spiral tunnel is blue, and the color portion of the spiral color separation reflective ring starts from the bottom of the outer side of the curve to end at 3 / 4 of the length of the spiral color separation reflective ring; the color portion of the spiral color separation reflective ring provided at the 4 / 4 travel point of the spiral tunnel is green, and the color portion of the spiral color separation reflective ring starts from the bottom of the outer side of the curve to end at 4 / 4 of the length of the spiral color separation reflective ring; four spiral color separation reflective rings are respectively provided at the 1 / 4 travel point of the spiral tunnel, the 1 / 2 travel point of the spiral tunnel, the 3 / 4 travel point of the spiral tunnel, and the 4 / 4 travel point of the spiral tunnel;

[0012] The road arrow-type guide sign is set 20m~30m in front of the spiral color-separated reflective ring. The road arrow-type guide sign consists of four consecutive and parallel arrows. The line width of the road arrow-type guide sign is 40~45cm, the width is 2.8m~3.2m, and the angle of the arrows is 60°; the first arrow of the road arrow-type guide sign set at the 1 / 4 stroke point of the spiral tunnel is orange and the second, third and fourth arrows are white; the second arrow of the road arrow-type guide sign set at the 2 / 4 stroke point of the spiral tunnel is yellow and the first, third and fourth arrows are white; the third arrow of the road arrow-type guide sign set at the 3 / 4 stroke point of the spiral tunnel is blue and the first, second and fourth arrows are white; the fourth arrow of the road arrow-type guide sign set at the 4 / 4 stroke point of the spiral tunnel is green and the first, second and third arrows are white.

[0013] According to the above scheme, the spiral inner waistline is a spiral waistline with reflective paint on the surface, the width of the spiral inner waistline is 10cm~12cm, the crest of the spiral inner waistline arranged in the entrance reinforcement section is 2.7m~2.9m, and the trough is 0.3m~0.5m, the crest of the spiral inner waistline arranged in the transition gradient section, the basic section of the curve, and the exit reinforcement section is 2.3m~2.5m, and the trough is 0.9m~1.1m, the rhythmic line shape of the spiral inner waistline arranged in the exit reinforcement section is half a sine curve and the period is 50m~60m, the rhythmic line shape of the spiral inner waistline arranged in the entrance reinforcement section, the transition gradient section, and the basic section of the curve is a sine curve and the period is 100m~120m.

[0014] According to the above scheme, the spiral outer belt line is a spiral belt line with a reflective paint on the surface, the width of the spiral outer belt line is 10cm~12cm, the crest of the low-position spiral belt line is 1.3m~1.5m and the trough is 0.5m~0.7m; the crest of the high-position spiral belt line is 2.7m~2.9m and the trough is 1.5m~1.7m; the setting of the low-position spiral belt line and the high-position spiral belt line in the entrance reinforcement section differs by 1 / 2 cycle, and the low-position spiral belt line and the high-position spiral belt line are arranged at the same time. The spiral belt line is set with a difference of 1 / 4 period in the gentle gradient section, and the low-level spiral belt line and the high-level spiral belt line achieve complete period overlap in the basic curve section and the exit reinforcement section; the rhythmic line shape of the low-level spiral belt line and the high-level spiral belt line set in the entrance reinforcement section, the transition gradient section, and the basic section of the curve is a sine curve with a period of 100m~120m, and the rhythmic line shape of the low-level spiral belt line and the high-level spiral belt line set in the exit reinforcement section is half a sine curve with a period of 50m~60m.

[0015] According to the above scheme, the inclination direction and angle of the two ends of the curved contour marker are consistent with the spiral reflective ring on the same side. The curved contour marker arranged at the entrance reinforcement section and the exit reinforcement section forms a T-shape with the spiral reflective strip, with a length of 3m~5m; the spiral inner belt line and the spiral outer belt line arranged in the transition gentle section are located in the middle of the spiral reflective strips at both ends and are 15m~20m long; the spiral inner belt line and the spiral outer belt line arranged in the basic section of the curve are located in the middle of the spiral reflective strips at both ends and are 15m~20m long.

[0016] According to the above scheme, the gradient line guide sign is set above the high-position curve contour sign of the transition gentle section and the basic section of the curve. The height of the gradient line guide sign gradually decreases from 1.2m~1.6m to 0.6m~1m along the driving direction and the width is 3m~6m. The color of the reflective film set on the surface of the gradient line guide sign is consistent with the theme color corresponding to the next adjacent travel interval.

[0017] According to the above scheme, the wavy contour marker is set on the side wall of the inspection road. The wavy contour marker set on the left side of the tunnel is yellow, and the wavy contour marker set on the right side of the tunnel is white; the crest of the wavy contour marker deviates from the driving direction, the length of the wavy contour marker on the inside of the curve is 0.8m~1.2m, and the length of the wavy contour marker on the outside of the curve is 1.8m~2.2m.

[0018] The implementation of the extra-long spiral highway tunnel safety guidance system of the present invention has the following beneficial effects:

[0019] 1. This invention utilizes a spiral profile band design to reconstruct the driver's spiral visual reference system in a tunnel environment, enhancing the driver's perception of the curvature of curved and sloped roads. Compared with traditional semi-circular reflective rings, the spiral reflective rings on the tunnel sidewalls have a certain spacing at the bottom of the curve on both sides. The variation in the spacing and inclination angle of the spiral line can provide the driver with curve guidance and enhance the driver's sense of distance. At the same time, the gradual widening design on the outer side of the curve increases the driver's visual distance, effectively reducing the possibility of accidents caused by the driver hitting the tunnel sidewall.

[0020] 2. This invention utilizes asymmetrically segmented design on both sides of the spiral reflective strip to enhance the warning effect at the entrance and exit sections, ensuring consistent and continuous visual guidance. The offset angle of the spiral reflective strip improves the driver's perception of the curvature and slope of the tunnel. At the same time, the reinforced entrance and exit sections are thickened to encourage drivers to remain vigilant, improve their speed perception, and induce drivers to actively reduce their driving speed, which helps to alleviate the psychological and physiological changes of drivers inside and outside the tunnel.

[0021] 3. This invention utilizes a spiral tunnel travel point confirmation system to enhance the driver's sense of position during driving, helping them determine the completed portion of their journey and the distance to the tunnel exit, thereby forming accurate driving expectations. Different travel sections are distinguished by multiple colors, effectively enriching the spiral visual reference system within the tunnel, alleviating driver fatigue after long driving on winding and sloping sections, and enhancing the driver's sense of safety, comfort, and rhythm in the long spiral tunnel.

[0022] 4. This invention utilizes a spiral beltline to provide drivers with visual information about bends and slopes, enhancing the visual guidance effect. Through asymmetrical design on the inside and outside of the curve, an inner median spiral beltline is formed, along with outer low and high spiral beltlines. This multi-layered arrangement effectively provides guidance information at different heights for small and large vehicles, with varying rhythms based on segmentation characteristics, alleviating driving fatigue and improving driver comfort.

[0023] 5. The present invention uses retroreflective materials to set up a multi-level and multi-color safety sight guidance system to improve the visual environment in the extra-long spiral tunnel. It does not involve photoelectric equipment. Through the rational use of facility materials, it can achieve the purpose of saving installation and maintenance costs. Compared with strengthening tunnel lighting, it requires less investment, has quicker results, and is easier to construct. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The present invention will be further described below with reference to the accompanying drawings and embodiments, in which:

[0025] Figure 1 This is a schematic diagram of the structure of the extra-long spiral tunnel safety guidance system of the present invention at the 3 / 4 point of the spiral tunnel;

[0026] Figure 2 This is a top view of the arrangement of the spiral reflective ring and the spiral reflective strip of the present invention;

[0027] Figure 3 2. It is a top view of the spiral tunnel travel point confirmation system of the present invention;

[0028] Figure 4 This is a side view of the inner side of the inlet reinforcement section of the present invention;

[0029] Figure 5 This is a side view of the inner side of the transition gradient section of the present invention;

[0030] Figure 6 This is a side view of the inside of the basic section of the curve of the present invention;

[0031] Figure 7 This is a side view of the inner side of the outlet reinforcement section of the present invention;

[0032] Figure 8 This is a side view of the outer side of the inlet reinforcement section of the present invention;

[0033] Figure 9 This is a side view of the outer side of the transition gradient section of the present invention;

[0034] Figure 10 This is a side view of the outer side of the basic section of the curve of the present invention;

[0035] Figure 11 The outlet reinforcement section of the present invention is a side view of the outside;

[0036] Figure 12 This is a schematic diagram of the gradient line induction of the present invention;

[0037] Figure 13 It is a schematic diagram of the curved contour of the present invention;

[0038] Figure 14 This is a schematic diagram of the segmentation of the extra-long spiral tunnel of the present invention;

[0039] Figure 15 This is a schematic diagram of the facilities arrangement of each section of the spiral tunnel of the present invention;

[0040] In the figure: 1. Spiral reflective ring; 2. Spiral reflective strip; 3. Spiral tunnel travel point confirmation device; 4. Spiral inner belt line; 5. Spiral outer belt line; 501. Low-position spiral belt line; 502. High-position spiral belt line; 6. Curved contour mark; 7. Gradient line guide mark; 8. Wave contour mark; 31. Spiral color-separated reflective ring; 32. Road surface arrow-type guide mark. DETAILED DESCRIPTION

[0041] In order to have a clearer understanding of the technical features, purposes and effects of the present invention, specific embodiments of the present invention are now described in detail with reference to the accompanying drawings.

[0042] like Figure 1-12 As shown, the extra-long spiral highway tunnel safety guidance system of the present invention divides the extra-long spiral highway tunnel into an entrance reinforcement section, a transition gradient section, a basic curve section, and an exit reinforcement section, including a spiral reflective ring 1, a spiral reflective strip 2, a spiral inner belt line 4, a spiral outer belt line 5, a curved contour mark 6, a gradient line guidance mark 7, a wavy contour mark 8 and a spiral tunnel travel point confirmation device 3, wherein the spiral tunnel travel point confirmation system includes a spiral color separation reflective ring 31 and a road surface arrow-type guidance mark 32.

[0043] The spiral reflective ring 1 is installed on the side wall of the tunnel, and its structure conforms to the linear characteristics of a spiral line. On the inside of the tunnel curve, it forms an angle of 100° to 120° with the tunnel road surface in the direction of travel, and on the outside of the tunnel curve, it forms an angle of 60° to 80° with the tunnel road surface in the direction of travel. The spiral reflective ring 1 has an arched cross-section, with a width of 15cm to 20cm on the inside of the tunnel curve, and gradually widens in a parabolic manner to 35cm to 40cm at the bottom on the outside of the tunnel curve. In extra-long spiral tunnels with a radius of 600m to 900m, adjacent spiral reflective rings 1 are set 50m to 60m apart to ensure that there are at least three spiral reflective rings 1 within the visible range, meeting the driver's needs for a sense of driving direction and distance.

[0044] Multiple spiral reflective strips 2 are evenly spaced between adjacent spiral reflective loops 1. These strips are asymmetrically arranged on the inside and outside of the tunnel, with spacing consistent with the spiral's linear characteristics. Their inclination and angle are consistent with those of the spiral reflective loops 1 on the same side. The cross-section of these strips is arched, measuring 7-9 cm wide on the inside of the tunnel's curves and 10-12 cm wide on the outside. At the tunnel's reinforced exit and entrance sections, the ratio of spiral reflective loops 1 to spiral reflective strips 2 is 1:3. At the tunnel's transitional and curved sections, the ratio is 1:2.

[0045] The spiral tunnel travel point confirmation device 3 includes a spiral color-separated reflective ring 31 and a road arrow-shaped guide sign 32. The spiral tunnel travel point confirmation device 3 uses different theme colors for each travel section. The first travel section is from the spiral tunnel entrance to the 1 / 4 point, and the first travel section uses orange as the theme color; the second travel section is from the 1 / 4 point to the 1 / 2 point, and the second travel section uses yellow as the theme color; the third travel section is from the 1 / 2 point to the 3 / 4 point, and the third travel section uses blue as the theme color; the fourth travel section is from the 3 / 4 point to the spiral tunnel exit, and the fourth travel section uses green as the theme color. The spiral color-separated reflective rings 31 are respectively arranged at 1 / 4, 1 / 2, 3 / 4 and 4 / 4 (i.e. before the exit) of the spiral tunnel. Four spiral color-separated reflective rings 31 are arranged at each travel point, and a total of 16 spiral color-separated reflective rings 31 are arranged in the entire spiral tunnel. The orange part of the spiral color-separated reflective ring 31 at the 1 / 4 travel point starts from the bottom of the outer side of the curve and ends at 1 / 4 of the length of the spiral color-separated reflective ring 31; the yellow part of the spiral color-separated reflective ring 31 at the 1 / 2 travel point starts from the bottom of the outer side of the curve and ends at 1 / 2 of the length of the spiral color-separated reflective ring 31; the blue part of the spiral color-separated reflective ring 31 at the 3 / 4 travel point starts from the bottom of the outer side of the curve and ends at 3 / 4 of the length of the spiral color-separated reflective ring 31; the spiral color-separated reflective ring 31 at the 4 / 4 travel point is green as a whole. The road arrow-type guide sign 32 is four consecutive and parallel arrows. The road arrow-type guide sign 32 is set 20m~30m in front of the spiral color-separated reflective ring 31, with a line width of 40~45cm, a width of 2.8m~3.2m, and a setting angle of 60°. The first arrow of the road arrow-type guide sign at the 1 / 4 stroke point is orange, and the remaining three arrows are white, prompting the driver to have completed 1 / 4 of the journey in the spiral tunnel; the second arrow of the road arrow-type guide sign at the 1 / 2 stroke point is yellow, and the remaining three arrows are white, prompting the driver to have completed 1 / 2 of the journey in the spiral tunnel; the third arrow of the road arrow-type guide sign at the 3 / 4 stroke point is blue, and the remaining three arrows are white, prompting the driver to have completed 3 / 4 of the journey in the spiral tunnel; the fourth arrow of the road arrow-type guide sign at the 4 / 4 stroke point is green, and the remaining three arrows are white, prompting the driver to have completed the entire journey in the spiral tunnel.

[0046] The spiral inner beltline 4 is a median spiral beltline located on the inside of the tunnel's curve. It conforms to the linear characteristics of a lateral spiral line and has a width of 10-12 cm. Its surface is coated with reflective paint, with the color corresponding to the theme color of each travel section. The peak of the spiral inner beltline 4 in the entrance reinforcement section is 2.7-2.9 meters, and the trough is 0.3-0.5 meters. The peak of the spiral inner beltline 4 in the transition gradient section, the basic curve section, and the exit reinforcement section is 2.3-2.5 meters, and the trough is 0.9-1.1 meters. The peak of the spiral inner beltline 4 in the transition gradient section shifts forward, and the trough shifts backward. The rhythmic line shape of the spiral inner beltline 4 in the exit reinforcement section is a half-sine curve with a period of 50-60 meters. The rhythmic line shape of the inner spiral beltline 4, located in the entrance reinforcement section, transitional section, and basic curve section, is a sinusoidal curve with a period of 100 to 120 meters. The outer spiral beltline 5, consisting of a low spiral beltline 501 and a high spiral beltline 502, is located on the outside of the curve. These beltlines conform to the linear characteristics of a lateral spiral line and have a width of 10 to 12 cm. Both low and high spiral beltlines 501 and 502 are coated with reflective paint in colors corresponding to the theme colors of the respective travel sections. The crest of the low spiral beltline 501 is 1.3 to 1.5 meters, and the trough is 0.5 to 0.7 meters. The crest of the high spiral beltline 502 is 2.7 to 2.9 meters, and the trough is 1.5 to 1.7 meters. The low-level spiral belt line 501 and the high-level spiral belt line 502 differ by 1 / 2 cycle in the entrance reinforcement section and by 1 / 4 cycle in the gentle gradient section, and their cycles completely overlap in the basic curve section and the exit reinforcement section; the rhythmic line shape of the low-level spiral belt line 501 and the high-level spiral belt line 502 in the entrance reinforcement section, transition gradient section, and basic curve section is a sine curve with a period of 100m~120m, and the rhythmic line shape of the exit reinforcement section is half a sine curve with a period of 50m~60m.

[0047] In the present invention, the curved delineator 6 is positioned on the inner spiral belt line 4 and the outer spiral belt line 5. The inclination and angle of the two ends of the curved delineator 6 are consistent with those of the spiral reflective ring 1 on the same side. The curved delineator 6 is positioned at three locations in the entrance and exit reinforcement sections: where the inner spiral belt line 4 meets the spiral reflective strip 2, where the lower spiral belt line 501 meets the spiral reflective strip 2, and where the upper spiral belt line 502 meets the spiral reflective strip 2. The curved delineator 6 forms a T-shape with the spiral reflective strip 2, with a length of 3 to 5 meters. The curved delineator 6 is positioned on the inner spiral belt line 4 and the outer spiral belt line 5 in the transition and curve sections, between the two ends of the spiral reflective strip 2, with a length of 15 to 20 meters.

[0048] Gradual linear guide signs 7 are set on the high spiral belt line 502 in the transition and basic curve sections. Their height gradually decreases from 1.2m~1.6m to 0.6m~1m along the driving direction, and their width is 3m~6m. The color of the attached reflective film is the same as the theme color of the next adjacent travel section. Wave-shaped contour signs 8 are set on the side wall of the maintenance road. Wave-shaped contour signs 8 are yellow when set on the left side of the tunnel, and white when set on the right side of the tunnel. The crest of the wave-shaped contour sign 8 deviates from the driving direction, and the undulating arc of the wave shape indicates the direction of travel. The length on the inside of the curve is 0.8m~1.2m, and the length on the outside of the curve is 1.8m~2.2m.

[0049] The method for setting up a safety guidance system for extra-long spiral highway tunnels is applicable to extra-long spiral highway tunnels with speed limits of 60 km / h or above. It can effectively reconstruct the spiral visual reference system within the tunnel, alleviate the negative emotions drivers experience from driving on curved and sloping roads for extended periods, and enhance their sense of safety, comfort, and rhythm in extra-long spiral tunnels. The system first designs a spiral reflective ring 1 and a spiral reflective strip 2 to enhance the driver's perception of the curvature and slope of the tunnel's curves, improve their speed perception, and provide guidance. Simultaneously, the spiral tunnel travel point confirmation device 3 utilizes a spiral color-separated reflective ring 31 and road surface arrow-shaped guidance signs 32 to enhance the driver's sense of position during driving, helping them determine their distance to the tunnel exit and forming correct driving expectations. An asymmetric design is adopted on the inner and outer walls of the tunnel. The low-level spiral inner belt line 4, the low-level spiral belt line 501, the high-level spiral belt line 502, the gradient line induction mark 7, and the wavy contour mark 8 enrich the multi-level and multi-color spiral visual reference system to increase the rhythm of the tunnel. The various rhythmic changes can relieve driving fatigue, improve driving comfort, and ensure traffic safety in the extra-long spiral tunnel.

[0050] The embodiments of the present invention are described above in conjunction with the accompanying drawings, but the present invention is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of the present invention, ordinary technicians in this field can also make many forms without departing from the scope of protection of the present invention and the claims, all of which are protected by the present invention.

Claims

1. A safety guidance system for an extra-long spiral road tunnel, comprising: The entrance reinforcement section, transition gradient section, curve basic section and exit reinforcement section are characterized by including spiral reflective rings, spiral reflective strips, spiral tunnel travel point confirmation devices, spiral inner belt lines, spiral outer belt lines, curved contour markers, gradient line induction markers, and wavy contour markers; The spiral reflective ring is an arched arc set from the inner side of the tunnel to the outer side of the tunnel, the spiral inner belt line is set on the inner side of the tunnel, the spiral outer belt line is set on the outer side of the tunnel, the spiral outer belt line includes two upper and lower parts, including a high spiral belt line and a low spiral belt line, the spiral reflective strips are set on both sides of the tunnel, the spiral reflective strip set on the left side of the tunnel extends from the spiral inner belt line to the tunnel ground, and is set in the tunnel. The spiral reflective strip on the right side extends from the high spiral belt line to the tunnel ground. A curved contour marker is set at the intersection of the spiral reflective strip and the spiral inner belt line. A curved contour marker is set at the intersection of the spiral reflective strip and the high spiral belt line. A curved contour marker is set at the intersection of the spiral reflective strip and the low spiral belt line. The gradient line induction marker is set on the high spiral belt line. The wavy contour marker is set on the side walls of the inspection road on the inside and outside of the curve of the tunnel; The spiral tunnel travel point confirmation device includes a spiral color separation reflective ring and a road arrow-shaped guide mark. The spiral color separation reflective ring is an arched arc set from the inner side of the tunnel curve to the outer side of the curve. The road arrow-shaped guide mark is set on the road surface in the tunnel. The inclination direction and angle of the two ends of the curved contour marker are consistent with the spiral reflective ring on the same side. The curved contour marker arranged at the entrance reinforcement section and the exit reinforcement section forms a T-shape with the spiral reflective strip, with a length of 3m~5m; the spiral inner belt line and the spiral outer belt line arranged in the transition gentle section are located in the middle of the spiral reflective strips at both ends and are 15m~20m long; the spiral inner belt line and the spiral outer belt line arranged in the basic section of the curve are located in the middle of the spiral reflective strips at both ends and are 15m~20m long.

2. The extra-long spiral highway tunnel safety guidance system according to claim 1 is characterized in that: The spiral reflective ring is a spiral arched reflective ring. The spiral reflective ring is located on the inner side of the curve in the tunnel, forming an angle of 100° to 120° with the tunnel road surface in the driving direction and has a width of 15cm to 20cm. The spiral reflective ring is located on the outer side of the curve in the tunnel, forming an angle of 60° to 80° with the tunnel road surface in the driving direction, and the outer side of the curve gradually widens in a parabolic form to a bottom width of 35cm to 40cm.

3. The extra-long spiral highway tunnel safety guidance system according to claim 2 is characterized in that: The spiral reflective strips arranged between the spiral inner belt line and the tunnel floor and the spiral reflective strips arranged between the high-position spiral belt line and the tunnel floor are arranged asymmetrically. The spiral reflective strips are spiral arched reflective strips. The spiral reflective strips arranged on the inner side are parallel to the inner section of the spiral reflective ring tunnel, and the spiral reflective strips arranged on the outer side are parallel to the outer section of the spiral reflective ring tunnel. The inner side of the curve of the spiral reflective strip is 7cm~9cm wide and the outer side is 10~12cm wide. The ratio of the spiral reflective rings and the spiral reflective strips located in the exit reinforcement section and the entrance reinforcement section is 1:3, and the ratio of the spiral reflective rings and the spiral reflective strips located in the transition gentle section and the basic section of the curve is 1:

2.

4. The extra-long spiral highway tunnel safety guidance system according to claim 1 is characterized in that: The extra-long spiral highway tunnel includes a first travel section, a second travel section, a third travel section and a fourth travel section, and the spiral tunnel travel point confirmation device is respectively arranged in the first travel section, the second travel section, the third travel section and the fourth travel section; the first travel section is from the spiral tunnel entrance to the 1 / 4 point of the tunnel travel, the colored part of the spiral color-separated reflective ring is orange, and the road surface arrow-type guidance mark is orange; the second travel section is from the 1 / 4 point of the tunnel travel to the 1 / 2 point of the tunnel travel, the colored part of the spiral color-separated reflective ring is yellow, and the road surface arrow-type guidance mark is yellow; the third travel section is from the 1 / 2 point of the tunnel travel to the 3 / 4 point of the tunnel travel, the colored part of the spiral color-separated reflective ring is blue, and the road surface arrow-type guidance mark is blue; the fourth travel section is from the 3 / 4 point of the tunnel travel to the tunnel exit, the colored part of the spiral color-separated reflective ring is green, and the road surface arrow-type guidance mark is green.

5. The extra-long spiral highway tunnel safety guidance system according to claim 4 is characterized in that: The spiral color separation reflective ring is respectively arranged at the 1 / 4 stroke point of the spiral tunnel, the 1 / 2 stroke point of the spiral tunnel, the 3 / 4 stroke point of the spiral tunnel and the 4 / 4 stroke point of the spiral tunnel; the colored portion of the spiral color separation reflective ring arranged at the 1 / 4 stroke point of the spiral tunnel is orange, and the colored portion of the spiral color separation reflective ring starts from the bottom of the outer side of the curve to end at 1 / 4 of the length of the spiral color separation reflective ring; the colored portion of the spiral color separation reflective ring arranged at the 1 / 2 stroke point of the spiral tunnel is yellow, and the colored portion of the spiral color separation reflective ring starts from the bottom of the outer side of the curve to end at 1 / 2 of the length of the spiral color separation reflective ring; The colored portion of the spiral color separation reflective ring provided at the 3 / 4 travel point of the spiral tunnel is blue, and the colored portion of the spiral color separation reflective ring starts from the bottom of the outer side of the curve and ends at 3 / 4 of the length of the spiral color separation reflective ring; the colored portion of the spiral color separation reflective ring provided at the 4 / 4 travel point of the spiral tunnel is green, and the colored portion of the spiral color separation reflective ring starts from the bottom of the outer side of the curve and ends at 4 / 4 of the length of the spiral color separation reflective ring; four spiral color separation reflective rings are respectively provided at the 1 / 4 travel point of the spiral tunnel, the 1 / 2 travel point of the spiral tunnel, the 3 / 4 travel point of the spiral tunnel, and the 4 / 4 travel point of the spiral tunnel; The road arrow-type guide sign is set 20m~30m in front of the spiral color-separated reflective ring. The road arrow-type guide sign consists of four consecutive and parallel arrows. The line width of the arrows is 40~45cm, the angle of the arrows is 60°, and the horizontal straight line width of the low points on the left and right ends of the arrows is 2.8m~3.2m; the first arrow of the road arrow-type guide sign set at the 1 / 4 stroke point of the spiral tunnel is orange and the second, third and fourth arrows are white; the second arrow of the road arrow-type guide sign set at the 2 / 4 stroke point of the spiral tunnel is yellow and the first, third and fourth arrows are white; the third arrow of the road arrow-type guide sign set at the 3 / 4 stroke point of the spiral tunnel is blue and the first, second and fourth arrows are white; the fourth arrow of the road arrow-type guide sign set at the 4 / 4 stroke point of the spiral tunnel is green and the first, second and third arrows are white.

6. The extra-long spiral highway tunnel safety guidance system according to claim 1 is characterized in that: The spiral inner belt line is a spiral belt line with reflective paint on the surface. The width of the spiral inner belt line is 10cm~12cm. The crest of the spiral inner belt line set in the entrance reinforcement section is 2.7m~2.9m, and the trough is 0.3m~0.5m. The crest of the spiral inner belt line set in the transition gradient section, the basic section of the curve, and the exit reinforcement section is 2.3m~2.5m, and the trough is 0.9m~1.1m. The rhythmic line shape of the spiral inner belt line set in the exit reinforcement section is half a sine curve with a period of 50m~60m. The rhythmic line shape of the spiral inner belt line set in the entrance reinforcement section, the transition gradient section, and the basic section of the curve is a sine curve with a period of 100m~120m.

7. The extra-long spiral highway tunnel safety guidance system according to claim 1 is characterized in that: The spiral outer belt line is a belt line with a reflective paint on the surface of the spiral belt line. The width of the spiral outer belt line is 10cm~12cm. The crest of the low-position spiral belt line is 1.3m~1.5m and the trough is 0.5m~0.7m; the crest of the high-position spiral belt line is 2.7m~2.9m and the trough is 1.5m~1.7m; the setting of the low-position spiral belt line and the high-position spiral belt line at the entrance reinforcement section differs by 1 / 2 cycle. The belt line is set with a difference of 1 / 4 period in the gentle gradient section, and the low-level spiral belt line and the high-level spiral belt line achieve complete period overlap in the basic curve section and the exit reinforcement section; the rhythmic line shape of the low-level spiral belt line and the high-level spiral belt line set in the entrance reinforcement section, the transition gradient section, and the basic section of the curve is a sine curve with a period of 100m~120m, and the rhythmic line shape of the low-level spiral belt line and the high-level spiral belt line set in the exit reinforcement section is half a sine curve with a period of 50m~60m.

8. The extra-long spiral highway tunnel safety guidance system according to claim 1 is characterized by: The gradient line guide sign is set above the high-position curve contour sign of the transition gentle section and the basic section of the curve. The height of the gradient line guide sign gradually decreases from 1.2m~1.6m to 0.6m~1m along the driving direction and the width is 3m~6m. The color of the reflective film set on the surface of the gradient line guide sign is consistent with the theme color corresponding to the next adjacent travel interval.

9. The extra-long spiral highway tunnel safety guidance system according to claim 1, characterized in that: The wavy contour marker is set on the side wall of the inspection road. The wavy contour marker set on the left side of the tunnel is yellow, and the wavy contour marker set on the right side of the tunnel is white; the crest of the wavy contour marker deviates from the driving direction, the length of the wavy contour marker on the inside of the curve is 0.8m~1.2m, and the length of the wavy contour marker on the outside of the curve is 1.8m~2.2m.

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