基于AHP-信息量法的怀柔区琉璃庙镇地质灾害危险性评价

该文通过建立坡度、地形起伏度、工程地质岩组、距断层距离、距道路距离和降雨量6个评价指标,利用层次分析法与信息量模型得到各指标权重值及信息量值,对怀柔区琉璃庙镇进行危险性综合评价和分区,划分出低危险区、中危险区、高危险区和极高危险区4类分区。分析结果得出,琉璃庙镇的低危险区面积13.32 km^(2),占全镇总面积的6.46%,琉璃庙镇的中危险区面积73.44 km^(2),占全镇总面积的35.60%,琉璃庙镇的高危险区、极高危险区面积119.54 km^(2),占全镇总面积的57.94%;人类活动密集程度和构造发育程度是影响研究区地质灾害形成的主要因素。评价结果可为怀柔区琉璃庙镇地质灾害的防范与治理提供一定的参考依据。

In this paper,six evaluation indexes such as slope,topographic fluctuation,engineering geological rock group,distance from fault,distance from road and rainfall are established,and the weight value and information value of each index are obtained using analytic hierarchy process(AHP)and information model.Liulimiao Town in Huairou District is comprehensively evaluated and divided into four types:low risk area,medium risk area,high risk area and very high risk area.The analysis results show that the low risk area 13.32 km2 of Liulimiao town accounts for 6.46%of the total area of the town,the medium risk area 73.44 km2 of Liulimiao Town accounts for 35.60%of the total area of the town,and the high risk area and extremely high risk area 119.54 km2 of Liulimiao town accounts for 57.94%of the total area of the town.The intensity of human activities and the degree of tectonic development are the main factors affecting the formation of geological disasters in the study area.The evaluation results can provide a certain reference basis for the prevention and control of geological disasters in Liulimiao Town,Huairou District.