降雨型滑坡危险性区划方法  

Research on the zonation methods of landslides triggered by rainfall

作　　者：李铁锋[1] 温铭生[1] 丛威青[2] 连建发[1] 陈平 

机构地区：[1]中国地质环境监测院,北京100081 [2]北京大学地球与空间科学学院,北京100871 [3]湖南省地质环境监测总站,湖南长沙410007

出　　处：《地学前缘》2007年第6期107-111,共5页Earth Science Frontiers

基　　金：国家"十一五"科技支撑计划课题(2006BAC04B01)

摘　　要：降雨诱发的滑坡等地质灾害分布广、危害大,开展地质灾害危险性区划是减轻地质灾害损失的有效途径之一。以湖南省为例,根据地质灾害调查成果,选取3 412处滑坡,分析了区域降雨型滑坡的发育特点和分布规律,建立了危险性区划指标体系,利用不确定性推理中的确定性系数法,对滑坡与工程地质岩组、坡度、坡向、植被和年均降水量5个评价因子进行了相关性分析,建立了Logistic多元回归模型;采用不规则网格单元划分方法,形成了湖南省滑坡灾害危险性区划图。Rainfall-triggered geologic hazards such as landslide and debris flow are common and serious in China. Geological hazards have serious impact on local economic development and social stability. Probability zonation of the rainfall-induced geohazards both at state scale and provincial scale have been put in practice. This brought a positive effect on protecting people＇s lives and property. Taking Hunan Province as an example, the authors carried out a research on the zonation methods of regional landslides triggered by rainfall. Using the distribution of 3 412 landslides, appraising factors including engineering geological fabric, slope gradient and aspects, vegetation and annual average rainfall were examined. By means of integration of landslide certainty factor （CF）, a relationship between the landslide probability and each appraising factor was developed. Using the multiple regression model, the landslide probability zonation was carried out in Hunan Province.

关 键 词：降雨型滑坡 敏感性分析 危险性区划 湖南省 

分 类 号：P642.22[天文地球—工程地质学]