Risk evaluation of geological hazards in Weibin District, Baoji City, Shaanxi Province, China

Based on detailed investigation of geological hazards in Weibin District, Baoji City, this paper has selected the main influence factors for geo-hazard fatalness and vulnerability evaluation by statistic analysis, and later specific evaluation was carried out using the experimental modeling and qualitative method, thus resulted into comprehensive risk evaluation. There are three major geological hazards types, namely landslide, collapse, debris-flow in Weibin District. In total there are 123 potential troubles, and of which 16 are imposing certain threat to people′s life and property. This paper has concluded the amount and fatalness of geo-hazard in all the towns and villages of Weibin District, and summarized the distribution feature and analyzed the forming conditions of geological hazards within this area, moreover, and an index system of systematic geo-hazard risk evaluation was set up. Assessment specification and rule for fatalness, vulnerability and risk are specified, thus a regional geo-hazard risk evaluation and zoning is carried out. 5 levels are classified in terms of geo-hazard risk, namely extra-high risk, high risk, medium risk, low risk and extra-low risk.