基于信息量模型的地质灾害危险性评价研究 ——以重庆市涪陵区为例 (三峡地区资源环境生态研究)

以地形坡度、地层岩性、到地质断层距离、到地面水体距离、土地利用类型和到交通干线距离为评价因子,应用信息量模型,对重庆市涪陵区进行地质灾害危险性评价。将涪陵区地质灾害危险性划分为极重度危险、重度危险、中度危险、轻度危险和无危险5个等级,涪陵区地质灾害危险区主要分布在长江和乌江沿岸带、黄草山和武陵山两山生态控制区以及境内人口密集的城镇建设区,中度以上危险区域主要分布在北部沿江新妙镇、石沱镇、珍溪镇;西南坪上的北部高山区;沿乌江江南城区和白涛片区以及武陵山的南部地区等,这些沿江、沿河区域由于复杂的地质构造、地形特征以及不良的人为活动,其地质灾害的危险性明显高于地势平坦地区。

On the Information Content Model of Geological Hazard Assessment in the Area of Fuling of Chongqing

This paper uses the information model,based on several evaluation factors,such as slope,lithology,and land use,distance to surface water,geological faults,and traffic,to assess the geological hazard of the district of Fuling.The district of Fuling will be divided into five geological hazard units,include extreme severe,severe,moderate,mild and none risk.The risk areas of the geological disaster are mainly distributed in the coast belt of the Yangtze River and Wu Jiang river,the ecological control zone of the Huang Cao mountain and Wu Ling mountain and the urban construction zone of high population.The moderate risk areas including Xin Miao town,Shi Yuo town,Zhen Xi town,the north area of the westsouth of the study area,the north area of the Wu Jiang river,Bai Tao area and the north area of the Wu Ling mountain.Because of the complicated geological structure,topography and adverse human activities,the risk of geological hazard of the river belt was significantly higher than the relatively flat area.