Numerical Simulation of Initiation of Rainfall-Induced Debris Flow

IMECH-IR > 流固耦合系统力学重点实验室

	Numerical Simulation of Initiation of Rainfall-Induced Debris Flow
	Wang SY(王淑云); Lu XB(鲁晓兵); Ye TL(叶天立); sywang@imech.ac.cn
会议录名称	ENGINEERING GEOLOGY FOR SOCIETY AND TERRITORY VOL 2: LANDSLIDE PROCESSES
	2015
会议名称	12th International IAEG Congress
会议日期	SEP 15-19 2014
会议地点	Torino ITALY
摘要	Two-phase flow model modified Mohr-Coulomb model and the theory of unsaturated soil are adopt in FLAC and then the characteristics of seepage flow of Beichuan soil under rainfall conditions are numerically simulated. It is shown that the initiation of rainfall-induced debris flow is affected by rainfall density and duration. The maximum horizontal displacement occurs at the foot of the slope and increases with rainfall duration. The vertical displacement is non-uniform and the maximum value occurs at point A which is at the top of two-third. Whether or not a sudden change of displacement occurs at the characteristic point A is suggested to judge if debris flow starts. It is also shown there is a good agreement between numerical simulation results and rainfall model test data in laboratory.
关键词	Debris Flow Rainfall Initiation Unsaturated Soil Simulation
课题组名称	LMFS海洋土力学(LHO)
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收录类别	CPCI
语种	英语
文献类型	会议论文
条目标识符	http://dspace.imech.ac.cn/handle/311007/55360
专题	流固耦合系统力学重点实验室
通讯作者	sywang@imech.ac.cn
推荐引用方式 GB/T 7714	Wang SY,Lu XB,Ye TL,et al. Numerical Simulation of Initiation of Rainfall-Induced Debris Flow[C]ENGINEERING GEOLOGY FOR SOCIETY AND TERRITORY VOL 2: LANDSLIDE PROCESSES,2015.

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