山区高速公路长大下坡与交通安全分析

Analysis on Long Steep Slope of Mountain Expressway and Traffic Safety

山区高速公路受地形、地质、地貌限制,若采用较高技术指标,会出现大量高填、深挖路基。考虑到经济性,易出现长大下坡路段。从坡度、坡长及制动器失效等方面分析长大下坡对交通事故的影响,并总结提出一些防治措施,以供参考。

Limited by terrain,geology and physiognomy,the mountain expressway cannot adopt high technical index,otherwise a great volume of filling and cutting subgrade will be induced.Considering the economical efficiency,it is easy to design long steep slope section.The influence of long steep slope on traffic accidents is analyzed in terms of slope grade,slope length,arrester failure and so on,some preventive treatment measures are proposed,which can be consulted by peers.