Building the landslide risk assessment model of Donghekou with spatial information technology
ZHANG Dong-hui1,2, ZHAO Ying-jun1, XUE Dong-jian2, XIE Shi-wen3, ZHAO Ning-bo1
(1 National Key Laboratory of Remote Sensing Information and Imagery Analyzing Technology, Beijing Research Institute of Uranium Geology, Beijing 100029, China;2 National Laboratory of Geo-hazard Prevention and Geo-environment Protection, Chengdu University of Technology, Chengdu 610059, Sichuan, China; 3 State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation Chengdu University of Technology, Chengdu 610059, Sichuan, China)
Abstract:
Single landslide information is obtained by remote sensing data, spatial data management and analysis are used by GIS, and “hazard- vulnerability-risk” three-level model is applied as the theoretical basis for single slide risk assessment. Hazard index and vulnerability index are extracted based on the principle of single landslide risk assessment, then a fuzzy comprehensive evaluation model is built, and the model was evaluated by cluster tests. Results indicated that the hazard, vulnerability and risk of Donghekou landslide are 0.79, 0.66 and 0.52, respectively.
KeyWords:
spatial information; Donghekou landslide; risk assessment; fuzzy comprehensive evaluation
