西北某水库库区泥石流形成条件及运动特征研究

西北某水电站位于准噶尔—北天山褶皱系南部的北天山优地槽褶皱带中部。在对库区相关泥石流沟谷的形成条件进行分析的基础上,重点研究了泥石流的流速、流量和冲击力等运动特征。研究表明,库区西岔沟和雪水沟泥石流具有一定的规模,而坝前沟、坝后沟的规模则比较小,发生频率也相应较低,对水电站的影响也比较有限。而对西岔沟和雪水沟来说,考虑...

Study on Forming Conditions and Motion Characteristics of a Debris Flow in Northwest China

A hydropower station in northwest China is located in the middle part of the Northern Tianshan geosynclinal fold belt where is in the south of the Junggar-Northern Tianshan fold system.Based on the study of the related debris flow locations’ formation conditions,the motion characteristics of debris flow are studied here such as flow velocity,flow discharge,impulsive force and so on.The study results show that in Xicha and Xueshui Valley,the debris flow has a certain size,while in Baqian and Bahou Valley,the debris flow’s size is small and the frequency of occurrence is low,so the influence to the hydropower station is limited.In addition,for Xicha and Xueshui Valley,the debris flow’s size in 10 or 50 years is not large relatively to the reservoir capacity,so the damage to the hydropower station is also small.