中文摘要：

2005年08月11日,四川省泸定县磨西地区南门关沟发生百年一遇大型泥石流,给当地百姓带来了巨大损失。基于现场调查和遥感解译的基础上,分析了高寒高海拔山区和非高寒高海拔山区南门关沟物源堆积特征,揭示了泥石流的成因机制;分析并计算泥石流的动力学特征参数,对于泥石流产生的潜在危害提出＂育林-疏通-拦挡＂等防治建议。

英文摘要：

August 11 ,2005 ,a once-in-a-century debris flow occured in the Nanmengun gully ,Moxi ,which is located in Luding ,Sichuang province .This debris flow caused large loss to the local people .Based on the data of on-site spot check and remote sensing interpretation ,the stacking characteristics of Nangmenguan gully debris was analyzed ,the for-mation mechanics of debris flow in the areas with high altitude and extremely cold climate was revealed .The dynamic pa-rameters of debris flow were analyzed and calculated ,it was suggested that the control measures of“tree planting-debris clearing-dam setting” should be implemented to prevent the debris flows from happening .