安徽省安庆市岳西县1:50000地质灾害风险评价

1∶50000 geological hazard risk assessment of Yuexi County,Anqing City,Anhui Province

作为安徽省内地质灾害易发地区,以中低山地地形为主体的岳西县主要发育崩塌、滑坡及泥石流地质灾害,对当地群众的人身和财产安全构成潜在风险。为进一步落实防灾减灾管理规划要求,需要在岳西县全域开展地质灾害风险评价,以预测可能发生的不同强度的地质灾害及估算地质灾害造成的损失。根据已完成的1∶50 000地质灾害调查和已取得的岳西县地质灾害易发性评价成果,本文分别开展了地质灾害危险性和易损性评价,并通过对危险性和易损性进行综合叠加,得到了岳西县高、中、低3个风险等级的评价分区。岳西县地质灾害风险评价工作具备科学性和系统性,为岳西县加强地质灾害的综合防治明确了具体方向,也为岳西县城乡建设规划提供了地质参考。

As an area prone to geological hazards in Anhui Province,Yuexi County is dominated by middle and low mountains,where collapses,landslides and debris flows are developed,posing potential risks to the lives and proper‐ties of local people.In order to further implement the requirements of hazard prevention and mitigation planning,it is necessary to carry out geological hazard risk assessment for the whole area of Yuexi County to predict the potential geological hazards of different intensities and estimate possible losses to be caused by geological hazards.According to the completed 1∶50000 geological hazard survey and the results of evaluation of geological hazard susceptibility in Yuexi County,this paper carried out evaluation of geological hazard risks and vulnerabilities respectively,and ob‐tained regional distribution of high,medium and low risk levels in Yuexi County through superposition of the risks and vulnerabilities.The assessment of geological hazard risks in Yuexi County is scientific and systematic,which makes clear the specific direction for comprehensive prevention and control of geological hazards in Yuexi County,and also provides geological reference for follow-up planning of urban and rural construction in Yuexi County.