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我国西部中高山地区地质灾害频发,选取贵州省印江县为研究区,从地质灾害发育的地质致灾因子和环境致灾因子出发,选取坡度、坡向、高程、岩组类型、构造断裂密度五个地质致灾因子和年均降雨量、道路工程二个环境致灾因子建立地质灾害危险性评价指标体系,以ArcGis软件为分析工具,运用信息量法对印江县地质灾害危险性进行评价。研究结果表明:印江县地质灾害危险性高和极高的区域分别占总面积的27.33%和5.40%,主要分布在印江县西北部和西南局部地区,其中极高区主要分布在峨岭镇、板溪镇南部、杉树乡和中坝村局部地区。
Based on the frequent occurrence of geological disasters in the middle and high mountains of western China, we selected Yinjiang County of Guizhou Province as the research area. Based on the geological hazard and environmental hazard factors of geological disasters, we selected the slope, aspect, elevation, type of rock group, tectonic fault Density of five geological hazards and the average annual rainfall, road engineering two environmental hazard risk assessment index system to establish geological hazards to ArcGis software as the analysis tool, the use of information methods to carry out the risk of geological hazards in Yinjiang County Evaluation. The results show that the areas with high and extremely high risk of geological disasters in Yinjiang occupy 27.33% and 5.40% of the total area, respectively, which are mainly distributed in the northwestern part of Yinjiang County and the southwestern part of China, of which the extremely high areas are mainly distributed in Ealing Town, Banxi town south, cedar Township and Zhongba village in some areas.