摘要
以汶川地震陕西的勉县、宁强、略阳三个重灾县的地质灾害防治区划为研究对象,借鉴国际上的自然灾害风险概念,基于1∶5万地质灾害详细调查精度,在勉、略、宁地区地质灾害危险性评价和承灾体地质灾害社会经济易损性评价基础上,通过GIS平台,进行了勉县、略阳、宁强地区的地质灾害风险区划初步研究,划分了勉、略、宁地区地质灾害风险区划结果。研究结果表明:勉、略、宁地区地质灾害风险区划属于细观层面的地质灾害风险区划。勉、略、宁地区地质灾害风险区可以划分为高、中、低和极低4级风险区,高中风险区占到全区面积的60%,是今后勉略宁地区地质灾害防治的重点。
Taking Mianxian County,Lueyang County and Ningqiang County in Shaanxi where were severely hit by the Wenchuan earthquake,as the research object,a preliminary study is made on geo-hazard zoning of Mianxian-Ningqiang-Luryang area,in terms of the international concept of natural hazard,based on 1∶50 000 detailed geological disaster investigation and hazard zoning of geo-hazard and vulnerability zoning of geo-hazard,by use of MAPGIS platform.The result shows that geological hazard risk zoning of Mianxian-Lueyang-Ningqiang area is micro-zoning of geological hazard risk and the geo-hazard risk zoning of Mianxian-Lueyang-Ningqiang area can be divided into 4 levels of risk as high,mediu,low and very low.The area of high and medium risk covers about 60% of the area of Mianxian-Lueyang-Ningqiang,where would be the key areas of geo-hazard prevention in Mianxian-Lueyang-Ningqiang area.
出处
《灾害学》
CSCD
2011年第4期35-39,共5页
Journal of Catastrophology
基金
陕西省教育厅(08JK051)
陕西省气象局(2008Z-2)
中国地质调查局(2007水环地灾-3)
关键词
地质灾害
风险区划
汶川地震
陕西
勉、略、宁地区
geological hazard
risk zoning
Wenchuan earthquake
Shaanxi
Mianxian-Lueyang-Ningqiang area
作者简介
王雁林（1975-），男，山西运城人，博士，从事地质环境保护管理和科研工作．E-mail：wangyanlin236@163．com
