Geological Disaster Risk Assessment Based on AHP Information Method
详细信息
- 责任者：Liu Yang (State Key Laboratory of Geo-Hazard Prevention and Geo-Environment Protection ; Chengdu University of Technology ; Chengdu 610059 ; China) ; Tang Chuan
- 刊名：Earth and Environment
- 出版年：2013
- 卷期：41(2)
- 关键词：地质灾害 ; geologic hazards ; 危险评估 ; risk assessment
- 页码：p.173-179
- 图表：illus., 6 tables, 10 refs.
- 分类号：1800
- issnNo：ISSN1672-9250
- isbnNo：CN52-1139/P
摘要
Many geological disasters threatened Tongjiang County,Sichuan Province,especially from September 17 to 18,in 2011,and continuous strong rainfall happened in Tongjiang County.According to the data provided by Tongjiang County Weather Bureau,rainfall amounted up to 362 mm in two days,causing massive floods,and a lot of geological disasters.In this paper,the AHP-Information model was used to assess the risk of geological hazards in Tongjiang County on the ARCGIS platform through seven factors:annual rainfall,altitude,slope,slope height,NDVI,river erosion and human engineering affect.The results showed that the method can ensure reasonable and reliable evaluation of geological hazards,provide the scientific basis for disaster prevention and mitigation in Tongjiang County,and can be used for reference in risk assessment of similar regional disasters.
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