Abstract: The debris flow is one of the main geological disasters in mountainous areas. The pit and tail ditch of Zhouning pumped storage power station is a typical debris flow ditch. The basic characteristics and influencing factors of the mudstone flow ditch are analyzed, and the corresponding prevention and control measures are put forward for disaster prevention and reduction. As well, detailed survey and investigation of mudstone gully are carried out, including meteorological hydrology, soil vegetation, topography and geomorphology, human engineering activities, et al.

Key words: debris flow, prevention and control measures, geological hazards, project construction

摘要： 泥石流是山区主要地质灾害之一，周宁抽水蓄能电站坑尾沟为典型的泥石流沟，分析了该泥石流沟的基本特征及其影响因素，提出了相应的防治措施，以达到防灾减灾的目的。对泥石流沟进行了详细勘察调研，对包括气象水文、土壤植被、地形地貌、人类工程活动等方面进行了详细分析，论述的防治措施对类似泥石流沟的勘查、防治设计具有一定的参考意义。

关键词: 泥石流, 防治措施, 地质灾害, 工程建设