基于GIS的流域地质灾害危险性区划及评价  

The geological hazard risk assessment of the river basin based on GIS

作　　者：范荣全 李惠民[2] 任光明[2] 李畅[2] 余天彬 

机构地区：[1]国网四川省电力公司经济技术研究院(成都城电电力工程设计有限公司),成都610041 [2]地质灾害防治与地质环境保护国家重点实验室(成都理工大学),成都610059 [3]四川省地质调查院,成都610081

出　　处：《工程勘察》2018年第3期59-63,共5页Geotechnical Investigation & Surveying

基　　金：国家电网公司科技项目(资助)

摘　　要：2010年8月13日,遭受"5·12汶川特大地震"重创的极重灾区绵竹清平发生强降雨,引发多处泥石流、滑坡、崩塌等地质灾害。其中以黄水河流域最为突出,导致漆树沟、花梯子沟内厂矿企业、居民生活和交通严重受损。本文通过现场调查和航空影像解译,分析黄水河小流域地质灾害的成因机制,在灾害学理论指导下,结合专家经验,通过对层次分析、信息量、统计量等模型的比较,利用GIS平台建立了泥石流、崩塌、滑坡灾害易发性、危险区划评价分析系统。应用该系统对震后地区棉竹清平等地区分别展开了泥石流、滑坡、崩塌灾害危险性区划研究,并取得了较好的成果。In August 13,2010,suffered of the 5. 12 Wenchuan earthquake,the extremely heavy disaster area Mianzhu Qingping occurred heavy rainfall,triggering a number of debris flow,landslides,collapses and other geological disasters. Among them,the Huangshui River Basin is the most prominent,leading factories and enterprises in Qishu and Huatizi ditch,and also resident living and traffic to be seriously damaged. Based on field investigation and aerial image interpretation,this paper analyzes the mechanism of geological hazards in the watershed of the Huangshui River basin. Based on the theory of disaster science and combining with expert experience, hierarchical analysis, information and statistics, the landslide,landslide hazard susceptibility,a hazard zoning assessment and analysis system based on GIS is developed. The application of the system to the post-earthquake areas of Mianzhu,Qingping areas for taking debris flow,landslides,collapse risk studies,and achieves good results.

关 键 词：滑坡 泥石流 崩塌 区划 地理信息系统 

分 类 号：P208[天文地球—地图制图学与地理信息工程]