Sensitivity Factor Analysis and Susceptibility Evaluation of Geological Hazards in Mianchi County
In order to effectively evaluate the sensitivity and susceptibility of different disaster factors to geological disaster development,Mianchi County was taken as an example background to conduct an analysis of its geological disaster pregnant conditions.The sensitivity and susceptibility of geological disaster pregnant factors to disasters were evaluated using the coefficient determination method and information quantity model,respectively.The analysis results show that Mianchi County has relatively many disaster inducing factors,mainly including geomorphic factors,elevation factors,slope factors,tectonics factors and formation lithology factors;In terms of sensitivity analysis,there are great differences in the sensitivity of the five types of hazard factors.The sensitivity order is:elevation factor>slope factor>tectonics factor>geomorphic factor>formation lithology factor;In terms of susceptibility analysis,the distribution area proportion of high susceptibility areas is17.66%,the distribution area proportion of medium susceptibility areas is 30.53%,the distribution area proportion of low susceptibility areas is28.52%,and the distribution area proportion of non susceptibility areas is 23.29%.Through the study,a solid theoretical foundation can be provided for disaster prevention and control in Mianchi County.
geological hazardsdetermination of coefficient methodinformation quantity modelsensitivitysusceptibility
NETL
NSTL
万方数据
