中文摘要：

通过现场勘查结合遥感解译,获取九锥沟流域的基础资料及松散固体物质的分布概况,在此基础上采用不同的方法分别计算各类物源的体积。经计算,九锥沟的松散固体物质总量为492.92×10^4m^3,九锥沟流域面积12.13 km^2,单位面积的松散固体物质的量为0.41 m^3/m^2,满足泥石流发生的临界土源厚度0.1 m^3/m^2。结合流域的地形地貌特征、区域背景资料、地震活动情况及当地的气象条件分析九锥沟泥石流的发育特征,并推算不同频率条件下泥石流的运动特征,计算各频率下泥石流的运动特征参数,为九锥沟泥石流防治工程的设计提供参考。

英文摘要：

Through field investigation combined with remote sensing interpretation obtain basic data and distribution rules of loose solid materials in Jiuzhui gully,on the basis of this information used different methods to calculate all kinds of source materials respectively,by means of calculations know that the total loose solid material in Jiuzhui gully is about 492. 92 × 10^4m^3,the area of Jiuzhui gully is 12. 13 km2,the quantity of loose solid material of per unit is 0. 41 m^3/ m^2,which could meet debris flow initiation conditions0. 1 m^3/ m^2. Then based on morphology, geomorphology, regional background information, earthquake activities and the local meteorological condition analyze the development features of debris flow in Jiuzhui gully,at the same time calculate debris flow movement characteristics under the conditions of different frequency,and then put forward corresponding mitigation measures,which can provide valuable reference for prevention and control engineering designing.