Experimental study on the parameters that cause river-blocking by debris flow
Debris flowis a non-Newtonian fluid, which contains large particles. At confluences with a main channel, debris flows commonly deposit solid material. Some large particles can not be moved by the main river and this can cause the water level to back up, potentially blocking a river. River-blocking is an extreme condition that is caused by debris flow when it enters a main channel, which often can cause secondary disaster. In our experimental study, the parameters that affect river-blocking are studied. Through an analysis of each parameter, it is found that large confluence angles, large discharges, and large, strong debris flows make river blocking easier. The specific gravity of debris flow has a parabolic-type influence on river blocking. As specific gravity of a debris flow increases, river blocking is at first easy, but then becomes more difficult.
river blocking debris flow confluence angle discharge ratio velocity ratio
Z.X. Guo E. Huang X.N. Liu D. Fang
State Key Laboratory of Hydraulic and Mountain River Engineering, Sichuan University, Chengdu, China
国际会议
成都
英文
251-258
2007-05-17（万方平台首次上网日期，不代表论文的发表时间）