寒区公路雪崩灾害处置技术研究

Study on Avalanche Disposal Technique in Cold Region

雪崩是是高寒山区道路安全威胁最大的自然灾害之一。国内外研究集中在雪崩发生的成因及变化规律,对永久治理方面研究较少。针对我国西藏地区G318线雪崩灾害,提出一种永久治理雪崩灾害的方法:防雪棚洞和防雪明洞,并从受力性能、经济性及采光等方面进行对比分析,得出以下结论:当雪崩路段小于50m,地层承载较高时,建议采用防雪明洞结构;当雪崩路段较长,宜采用经济性、采光较好的防雪棚洞结构。

Snow avalanche is one type of the largest natural hazards in alpine regions. The study focused on the genesis and variation of avalanche occurrence,and less research on permanent governance at home and abroad,. Aiming at the avalanche disaster of G318 line in Tibet,this paper puts forward a method to control the avalanche disaster permanently: the snow shelter and the snow-proof cave,and from the aspects of mechanical performance,economy and lighting,the following conclusions are reached: When the section is less than 50 m,the structure of snow-proof hole is recommended when the bearing capacity is higher. When the avalanche section is longer,it is better to adopt the structure of economy and lighting.