基于信息量模型开展的滑坡崩塌易发性评价

Evaluating the Susceptibility of Landslides and Collapse Based on the Information Content Model

开展区域地质灾害易发性评价,可为地区地质灾害防治工作提供参考依据。以孕灾地质条件和成因机理分析为基础,选取与滑坡、崩塌发育相关性较大的评价因子,基于信息量模型,计算各个评价单元地质灾害发生关联评价因子的总信息量作为该评价单元地质灾害易发性指数,利用自然断点法划分为高易发、中易发、低易发、非易发4个等级,从而获得黔南州滑坡崩塌易发性评价结果。

The assessment of the susceptibility of regional geological hazards can provide a reference basis for their prevention and control.Based on the analysis of the geological condition and formation mechanism of disasters,this article selects evaluation factors that are closely related to the development of landslides and collapse,calculates the total information content of the evaluation factors related to the occurrence of geological disasters in each evaluation unit as the susceptibility index of geological disasters in this evaluation unit based on the information content model,and uses the natural breakpoint method to divide it into four levels:high susceptibility,medium susceptibility,low susceptibility and non susceptibility,in order to obtain the evaluation results of the susceptibility of landslides and collapse in Qiannan Prefecture.