栗子坪水电站南桠村沟泥石流运动特征研究

南桠村沟位于南桠河栗子坪水电站首部枢纽区左岸，是水电站工程区内规模较大的一条泥石流冲沟，历史上曾经发生过较大规模的泥石流。水电站调节池位于南桠村沟的出口台地上，沟内第四纪松散堆积物及人工堆积物丰富，在暴雨，地震等自然因素的触发下，时有较大规模的泥石流发生的可能，对调节池的运行安全带来不利影响。笔者根据国内外有关研究成果，结合南桠村沟泥石流的具体特征，分析研究了南桠村沟泥石流的运动特征，包括泥石流的流速、流量、和冲击力，这一研究对评价南桠村沟泥石流对栗子坪水电站调节池的影响具有现实意义。

STUDY ON THE DYNAMIC CHARACTERISTICS OF NANYA VILLAGE GULLY DEBRIS FLOW OF LIZIPING HYDROPOWER STATION

Nanya village gully, a big debris flow one, is located on the left bank of Nanya river in Lizi Ping hydropower station area. A lot of evidences show that large scale debris flows had ever occurred along this gully in history time. The adjustive pool of the hydropower station is designed at the exit of the gully and there are many the Quaternary sediments and artificial deposits there. There exists the possibility of the occurrence of large scale debris flow induced by heavy rainstorms and earthquakes, which would threaten the safety of the adjustive pool. In this paper, the authors analyze the dynamic characteristics of Nanya village gully debris flow. Some important parameters for protection design such as the flow velocity, the discharge, the punching power and the transporting quantity of the debris flow are recommended.