四川省泥石流风险评价

Risk Assessment of Debris Flow in Sichuan Province

通过对1990年和2000年四川省泥石流灾害易损度的对比分析,得出了泥石流灾害风险度10年来的变化情况。攀枝花市、泸州市、眉山市、绵阳市、广元市、宜宾市、广安市、巴中市和凉山州的泥石流灾害风险度均有不同程度的增大。特别是眉山市、广安市和巴中市增幅较大。通过对泥石流灾害风险的定量计算,得出了2000年四川省泥石流灾害风险评价结果。凉山州、甘孜州、阿坝州、攀枝花市和雅安市为四川省泥石流灾害高风险区。

By comparative analysis on the vulnerability and risk of debris flow from 1990 to 2000 in Sichuan, this paper gives the variation trends and quantitative results of debris flow risk. The risk of debris flow increases in Panzhihua, Luzhou, Meishan, Guangyuan,Yibing, Guang'an, Bazhong and Liangshan, especially in Meishan, Guang'an and Bazhong. The result of risk assessment of debris flow in Sichuan Province in 2000 is given by quantitative calculation of risk of debris flow hazards. It shows that Liangshan, Ganzi, Aba, Panzhihua and Ya'an in Sichuan Province are highly exposed to debris flow risk.