摘要
地质灾害风险评估方法较多,但主要集中在对单体地质灾害的风险评估研究,对区域风险评价较少。该文以韩城市为研究对象,以网格划分为评价单元,以1:50 000地质灾害详细调查数据及收集到的相关社会、经济资料为基础,以概率统计法、Arc GIS、Mapgis、Auto CAD等为手段,对地质灾害危险性与承灾体易损性分项评价,采用定性综合评估的方法,实现韩城市地质灾害风险评估。将承灾体易损性分为人口易损性和财产易损性,提出人口比率和财产损失比率的概念,分别用因灾人口死亡总和/受威胁人口总和、已造成的财产损失总和/可能造成的财产损失总和表示,以单体地质灾害为基础,在评价单元内叠加评价,最终形成韩城矿区地质灾害风险评估分区图,根据不同的风险等级提出不同的防治建议,旨在为政府部门进行宏观决策、地方进行减灾防灾提供基础依据。
There are many methods to assess the risk of geological hazards, which are mainly focused on the risk assessment of the single geological hazard, and less are on the evaluation of regional risk. Taking Hancheng city as the research object, with the grid as evaluation unit, relevant social and economic data, we collect data and detailed investigation of geological disasters to 1∶ 5 0000 based on probability statistics method, ArcGIS, Mapgis, AutoCAD etc, to evaluate the geological hazard and vulnerability of disaster affected body sub. Using the method of qualitative evaluation, implementation of risk assessment of geological hazards in Hancheng city. The disaster is divided into population vulnerability and property vulnerability, and puts forward the concept of population and property loss ratio, respectively, with death tolls sum/threatened population sum, has caused property damage may cause damage to property/ sum of said monomers in the geological disaster based on superposition in the evaluation the evaluation unit, and ultimately the formation of risk of geological disaster assessment of Hancheng zoning map, according to put forward different prevention suggestions of different risk levels, to provide the basis for disaster prevention and reduction according to government departments, local macro decision.
作者
姬怡微
李成
高帅
陈建平
郑苗苗
JI Yiwei;LI Cheng;GAO Shuai;CHEN Jianping;ZHENG Miaomiao(Key Laboratory of Mine Geological Hazards Mechanism and Control,Xi an 710054,China;Shaanxi Institute of Geo-Environment Monitoring Station,Xi an 710054,China;College of Geology and Environment,Xi an University of Science & Technology,Xi an 710054,China)
出处
《灾害学》
CSCD
北大核心
2018年第3期194-200,共7页
Journal of Catastrophology
基金
国家重点基础研究发展(973)计划(2013CB227901)
陕西省地质调查院关于下达2015年地质灾害详细调查任务的通知(陕地调院发[2015]17号)
"陕西省典型矿山地质环境治理恢复技术方法研究"(20150202)
关键词
地质灾害
危险性评价
易损性评价
风险评估
陕西韩城
geological hazard
fatalness assement
vulnerability assement
risk assement
Hancheng of Shaanxi Province