湖南雪峰山地区降雨型滑坡灾害敏感性区划

雪峰山地区是湖南省降雨型滑坡灾害较为发育的地区之一，滑坡灾害给该地区社会及经济发展造成严重影响，给人民生命财产造成严重损失.本文选择影响滑坡发生的关键地质因子，即坡向、高程、工程岩组、斜坡类型和坡度等5个因子，通过确定性系数（CF）与层次分析法（AHP）的融合，解决评价中各因子指标的排序赋值和各评价因子叠加的权重问题.在给定因子权重的基础上，采用因子权值与因子赋值相乘后相加的方法，求得雪峰山地区降雨型滑坡综合敏感度值，并根据敏感性指标对研究区进行敏感性区划.

SENSITIVITY ZONING OF RAINFALL-INDUCED LANDSLIDE HAZARD IN XUEFENG MOUNTAIN AREA

The Xuefeng Mountain area in Hunan Province is one of the regions seriously suffering from the rainfall-induced landslide disasters, which have a severe impact on social and economic development and cause heavy damage to people's lives and property. Five key geological factors including slope aspect, elevation, engineering rock assemblage, slope type and gradient that affect landslide are selected to solve the problem of ranking assignment of each factor index and weight of factor superposition in evaluation through the combination of certainty factor(CF) and analytic hierarchy process(AHP). Based on the given factor weights, the weights and assignments are multiplied and then added to calculate the comprehensive sensitivity values of rainfall-induced landslide in the study area. The sensitive areas are then divided according to the sensitivity indexes.