基于GIS的竹山县一般调查区地质灾害风险评价  

Geological Disaster Risk Assessment of General Survey Area in Zhushan County Based on GIS

作　　者：黎昕 李小飞 Li Xin;Li Xiaofei(Hubei Land Resources Vocational College,Wuhan,Hubei 430090,China;Metallurgical Geological Exploration Brigade,Hubei Bureau of Geology and Mineral Resources,Shiyan,Hubei 442001,China)

机构地区：[1]湖北国土资源职业学院,湖北武汉430090 [2]湖北省地质局冶金地质勘探大队,湖北十堰442001

出　　处：《绿色科技》2023年第16期34-38,共5页Journal of Green Science and Technology

摘　　要：竹山县地质环境条件复杂,历来是地质灾害多发易发、灾情严重的地区。根据前期已收集到的竹山县地质灾害发育及分布特征资料,结合地理信息系统软件(ArcGIS),综合使用层次分析、信息量、专家打分等方法,获取坡度、高差、地质构造、工程地质岩组、地表水系特征五类指标的地质灾害易发性权重,进行竹山县滑坡地质灾害易发性划分;根据得到的易发分区图,叠加诱发因子降雨量,获取竹山县地质灾害危险性分区结果;根据竹山县人口易损性和经济易损性两大评价因子,通过栅格叠加对竹山县综合承灾体易损性分布情况进行划分;结合承灾体价值数据进行综合分析,得到竹山县地质灾害风险评价专题图。结果表明:竹山县极高风险区与高风险区灾害点达813处,主要集中在柳林乡新集镇、官渡镇桃源村等人口密集区域,应及时采取对应的防治与监测措施。The geological environment of Zhushan County is complex,and it has always been an area with frequent and serious geological disasters.In this paper,based on the data of geological hazard development and distribution characteristics in Zhushan County collected in the earlier stage,combined with the geographic information system software(ArcGIS),comprehensive use of analytic hierarchy process(AHP),information volume,expert scoring and other methods,first obtain the geological hazard susceptibility weights of five indicators of slope,elevation difference,geological structure,engineering geological rock formation,and surface water system characteristics,and then divide the landslide geological hazard susceptibility in Zhushan County;According to the obtained prone zoning map,the induced factor rainfall is superimposed to obtain the results of geological hazard risk zoning in Zhushan County;Then,according to the two evaluation factors of population vulnerability and economic vulnerability of Zhushan County,the vulnerability distribution of Zhushan County's comprehensive disaster bearing body is divided by grid superposition;Finally,combined with the value data of hazard bearing body,a thematic map of geological hazard risk assessment in Zhushan County is obtained.The results show that there are 813 high risk areas and disaster points in high risk areas in Zhushan County,which are mainly concentrated in densely populated areas such as Xinji Town of Liulin Township and Taoyuan Village of Guandu Town.Corresponding prevention and monitoring measures should be taken in time.

关 键 词：地质灾害 易发性 危险性 易损性 风险评价 

分 类 号：X171.4[环境科学与工程—环境科学]