水土保持研究2013，Vol.20Issue(1)：264-268,5.
官坝河泥石流动力学特征参数
Dynamics Parameters of Debris Flows in Guanba River
摘要
Abstract
The fault lakes around belt of southeast Tibet were influenced by the sediment deposition coming from the erosion of flash flood and debris flows, in which the example was Qionghai. But the problem that sediment severely deposited in Qionghai relied on the prevention and control of flashflood and debris flows. Under this background, the topography of Qionghai drainage and the character of sediment deposition were analyzed, and the dynamics parameters of debris flows were calculated. The debris flows of Guanba river was trasitional viscous. The peak discharge of debris flows was 813. 7 m3/s, and the highest dynamic pressure and impact force of massive stone was 147 kPa, 1. 63×105 kN, respectively. Above of all, the prevention and control for debris flows was made. Stabilizing slopes of gully and blocking large particles in higher reaches area of Guanba river, reducing fine particles and desilting sediment in lower reaches area of Guanba river should be practiced. This work was useful for prevention and control of debris flows in other fault lakes a-round belt of southeast Tibet.关键词
青藏高原东南缘/构造断陷湖/邛海/动力学特征参数/防治工程Key words
belt of southeast Tibet/ fault lakes/ Qionghai/ dynamics parameters/ prevention and control project分类
天文与地球科学引用本文复制引用
李俊,陈宁生..官坝河泥石流动力学特征参数[J].水土保持研究,2013,20(1):264-268,5.基金项目
十二五国家科技支撑计划课题"龙门山地震带小流域滑坡泥石流灾害监测预警技术研究与示范"(2011BAK12B02) （2011BAK12B02）
