摘要
Abstract
Dagou locates in the right bank of the reservoir area of Xigu Hydropower Station in Jiulong County of Sichuan Province.In 1998,viscous transitional debris flow occurred after steep slope collapsed,which caused geological hazard for sediments were not rushed off but accumulated in the forming area and circulating area.Based on field survey,the causes and dynamic characteristics of Dagou debris flow are analyzed and its risk is evaluated.The results show that the physical feature,material factor and rainfall factor satisfy all forming conditions of debris flow in Dagou.Meanwhile,Dagou debris flow is of high risk and its development trend has been accelerated.Therefore,it is recommended to take measures to prevent debris flow for safety.关键词
泥石流/成因/动力学特征/危险性评价Key words
debris flow/causes/dynamic characteristics/risk assessment分类
交通工程
