Characteristics of Mountain Torrent Hazard along Highway in Sichuan and Chongqing

Based on the analysis of years of statistics and field survey data in Sichuan and Chongqing,with the study of mountain highway torrent hazard in two areas, the main characteristics are evaluated detailed, the results showed that mountain highway torrent hazard had the characteristics of widespread of various types of disaster, serious damages, far-reaching affects,spatial and temporal distribution Inequality,the result can provide the basis for disaster prevention and reduction and keep the mountainous highway safe and unimpeded in Sichuan and Chongqing.