摘要
在对区域1∶5万地质灾害详细调查的基础上,利用综合指数法对地质灾害进行了风险区划分。研究结果表明,区内共发生地质灾害体140处,其中泥石流30处,崩塌21处,滑坡20处,不稳定斜坡69处,分布主要受地形地貌以及降雨量影响;徽州区地质灾害风险等级呈现空间差异性,整体上南北两端较高,中部较低,地质灾害高易发区主要分布在徽州区北部山区,总面积约268.16 km^2,占全区面积的60.85%。该成果为区域防灾减灾管理、灾后搬迁安置、建立群防群测体系具有借鉴意义。
Based on the survey of geological disasters,zoning of geological hazard＇s susceptibility is classified with comprehensive index. The results show that there are 140 geological hazard events in this region,and the number of debris flows is 30,the collapses is 21,landslide is 20 and the unstable slopes is 69,which are mainly influenced by topography and rainfall; Geological hazard ＇s susceptibility levels of Huizhou present spatial differences which the south and north is higher and the middle area is lower. The geological hazardprone areas mainly distribute in northern mountainous of Huizhou district and the area is about 268. 16 km2 which accounts for 60. 85% of the region. The results will provide some suggestions to prevent geological disasters,work for emigrants and establish system of hazard prevention.
出处
《中国地质灾害与防治学报》
CSCD
2016年第1期136-140,共5页
The Chinese Journal of Geological Hazard and Control
基金
安徽省地勘科技基金国产卫星在矿山地质环境遥感监测方面应用示范研究项目(kj2014-07)
关键词
GIS
地质灾害
风险区划
徽州区
GIS
geological hazard
susceptibility zoning
Huizhou district
