层次分析法在甘肃省地质灾害易发性评价中的应用

Application of the Hierarchical Analytical Methods to Evaluating Geological Hazard Tendency in Gansu Province

在研究分析甘肃省内地质灾害类型和发育特点基础上,总结出甘肃省的主要致灾类型为滑坡(含崩塌)和泥石流.确立了主要灾害本身的活动规律和影响因素,厘定滑坡分布密度等历史危害性和暴雨分布等10项指标为影响地质灾害发育程度的主要因素.采用层次分析方法建立了递阶层次结构体系,并构造出判断矩阵和特征向量,应用模糊数学方法进行了地质灾害易发区和防治区划分,取得了良好的应用效果.

Landslides and mud-debris flows are the main geological hazards in Gansu Province,which is summarized from studying the features of geological hazards in the province.The active regularity and influential factors are mentioned in this paper.There are ten factors controlling the hazards,including density of slithering slopes and rainstorm records etc.Hierarchical system is founded with AHP method,and the criticism matrix and eigenvector are established.Divisions of tendency and control of geological hazards ...