Particle support mechanism in viscous debris flows at Jiangjia Ravine,Yunnan,China  

作　　者：王裕宜 费祥俊 

机构地区：[1]Chengdu Institute of Mountain Disasters and Environment, Chinese Academy of Sciences [2]Dongchuan Debris Flow Observation and Research Station, Chinese Academy of Sciences, Chengdu 610041, China [3]Department of Hydraulics, Tsinghua University

出　　处：《Science China(Technological Sciences)》1999年第5期550-555,共6页中国科学（技术科学英文版）

基　　金：Project supported by the National Natural Science Foundation of China (Grant No. 49671008).

摘　　要：Hyperconcentrated viscous debris flows can move rapidly on low-gradient ravine under shear, because they have highly excessive pore pressure. The relationship between excessive pore-pressure (P e ) and volume concentration (C vt ) in viscous debris flows, i. e.P e =2 494. 76C vt 0.94, is quantitatively shown; the correlation coefficienty=0.967 1, 95% confidence interval is 0.905 3<ρ<0.993 7. About 92.29% of all grains (by weight) is supported by excessive pore pressure.

关 键 词：DEBRIS FLOW PARTICLE SUPPORT EXCESSIVE pore-pressure. 

分 类 号：TV143[水利工程—水力学及河流动力学]