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采用现场调查结合遥感解译的方法,在收集2008—2011年都汶公路沿线17次典型泥石流降雨资料的基础上,分析太平驿沟泥石流发育特征及降雨特征,研究降雨条件变化规律及发展趋势。研究表明:太平驿沟泥石流降雨条件整体表现出雨量大、历时长、激发雨强低的特点,前期累计雨量与激发雨强均呈逐年增加趋势,再次暴发整体大规模泥石流可能性低,后期泥石流防治工程应重点对支沟进行拦挡和清淤。
On the basis of 17 typical debris flow data along the Du-Wen Highway between 2008 and 2011, a field survey and remote sensing interpretation method were used to analyze the development characteristics and rainfall characteristics of the debris flow in the Taipingji Gully and to study the changing rules and development trends of rainfall conditions. The research shows that the rainfall conditions of Taipiezigou debris flow show the characteristics of large amount of rainfall, long duration and low rainfall intensity. Both the accumulated rainfall and the intensity of the rain show a trend of increasing year by year. The possibility of large-scale debris flow is low, Prevention and control projects should focus on blocking the ditch and dredging.