Gravel Accumulation in Deposits of Viscous Debris Flows with Hyper-concentration

Gravel Accumulation in Deposits of Viscous Debris

Flows with Hyper-concentration

WANG Yuyi;TAN Rongzhi;JAN Chyandeng;TIAN Bing

【期刊名称】《山地科学学报（英文版）》 【年(卷),期】2009(006)001

【摘要】According to the observational data of viscous debris flows with hyper-concentration, debris flows can be classified into three types: high-viscous, viscous, and sub-viscous debris flows. Distinct formation mechanism of different graded bedding structures in deposits of viscous debris flows was analyzed in this paper by using their yield-stress ratio and flow plug ratio. This paper specially analyzed the effect of Weissenberg which the gravels in squirm condition of hyper-concentration viscous flows would tend to move vertically, and the formation mechanism of the gravels accumulated at surface was also studied. The analysis in this paper can establish a foundation for the studies on differentiation of bedding structures of debris flow deposits and studies on dynamic parameters of debris flows. 【总页数】8页(88-95) 【关键词】

【作者】WANG Yuyi;TAN Rongzhi;JAN Chyandeng;TIAN Bing

【作者单位】Key Laboratory of Mountuin Hazards & Earth Surface Process, Chinese Academy of Sciences;Institute of Mountain Hazards &