公路洪水灾害危险性评价指标

Risk Assessment Indicators of Highway Flood Hazards in China

根据公路洪水灾害的特点和致灾机理,将公路洪水灾害分为山区沿河公路水毁、山区公路边坡水毁和平原区公路淹没水毁3种;分析了降雨、地形、岩土、植被和水系等主要影响因素对公路洪水灾害危险性大小的影响;根据各影响因素对公路洪水灾害危险性的影响特点,选择影响因素特征参数建立了各类公路洪水灾害危险性评价指标;在此基础上,根据各指标对公路洪水灾害危险性大小的影响程度,将其分为极低危险、低度危险、中等危险、高度危险和极高危险5级。

Highway flood hazards are classifited into three types： flood hazards along highway in mountain areas,highway slope flood hazards in mountain areas and highway flood hazards in plain areas,according to their characteristics and mechanism; The main influencing factors of highway flood hazards,including rainfall,topography,rock and soil,vegetation and water system are analyzed; Assessment indicators of each type are put forward based on their influencing characteristics.At last,every indicators of each type are divided into five grades： very low dangerous,low dangerous,medium dangerous,high dangerous and very high dangerous according to their influence degree.