基于信息量叠加的保康县地质灾害易发性评价

Geological disaster susceptibility evaluation in Baokang County based on information value method

保康县区域内地质灾害发育强烈,为提高保康县地质灾害易发性分区评价准确性,本文基于保康县野外调查资料,选取坡度、坡向、坡型、斜坡高差、构造特征、工程地质岩组、水系密度及植被覆盖8项因素作为评价指标,利用信息量评价模型评价保康县地质灾害易发性,划分出极高、高、中、低4类易发区,并确定了极高和高易发区。

Geological disasters in Baokang County were strongly developed.In order to improve the accuracy and precision of geological disaster susceptibility zoning evaluation in Baokang County,based on the detailed field survey data,this paper took Baokang County as the research object,and selected eight factors including slope,aspect,slope type,slope height,structural characteristics,engineering geological rock group,water system density and vegetation coverage as evaluation indexes.The information evaluation model was used to evaluate the susceptibility of geological disasters in Baokang County.The areas were devided into four types of extremely high,high,medium and low susceptibility.,The extremely high areas and high area were delineated.