茂县槽木沟泥石流冲毁隧道和桥梁并威胁沿线公路、铁路,本文通过调查研究,查明了槽木沟泥石流的害史灾情、测定危险区范围、划分区段并确定各区段的冲淤特征,进而完成了易发程度分析,确定泥石流的发生频率、规模与危害,明确了治理的必要性。 Mud County Trench Mud debris flow to destroy tunnels and bridges and threaten the road along the railway, the paper through the investigation and research to identify the history of the disaster in the tamogu debris flow disaster, determine the scope of the danger zone, the division and determine the scouring and silting features of each section , And then completed a degree of vulnerability analysis to determine the occurrence of debris flow frequency, size and hazard, clear the need for governance.