Experimental study on the deposition process of debris flows

CORC > 成都山地灾害与环境研究所 > 中国科学院水利部成都山地灾害与环境研究所 > 山地灾害与地表过程重点实验室

	Experimental study on the deposition process of debris flows
	Zhou GD(周公旦)
	2013-09-15
会议名称	第35届国际水力学大会
会议日期	2013-9-15
会议地点	成都
关键词	Debris flow Experiment Deposition process Solids segregation
通讯作者	周公旦
中文摘要	Debris flow is generally composed of a wide range of solid particles and viscous pore fluids. It flows at a high traveling velocity down a sloping channel. Interactions between solid and fluid phases affected by multiple parameters govern the rheological properties of debris flows. Study on the deposition process of hazardous geophysical flows (e.g., debris flows) is crucial for the hazard mitigation and prediction. In this study, large flume model tests of debris flows were conducted. The flow thickness, frontal velocity, solids concentration, and basal total/pore-water pressures of debris flows along the sloping channel were measured, and the deposition process of decelerated debris flows on the horizontal ground was monitored. Multiple surges and the grain-size distribution of debris mass in the deposition fan was measured and depicted. The flume model test results illustrate that reverse and longitudinal segregation in two directions occurs in the deposition process of granular debris flows.
英文摘要	Debris flow is generally composed of a wide range of solid particles and viscous pore fluids. It flows at a high traveling velocity down a sloping channel. Interactions between solid and fluid phases affected by multiple parameters govern the rheological properties of debris flows. Study on the deposition process of hazardous geophysical flows (e.g., debris flows) is crucial for the hazard mitigation and prediction. In this study, large flume model tests of debris flows were conducted. The flow thickness, frontal velocity, solids concentration, and basal total/pore-water pressures of debris flows along the sloping channel were measured, and the deposition process of decelerated debris flows on the horizontal ground was monitored. Multiple surges and the grain-size distribution of debris mass in the deposition fan was measured and depicted. The flume model test results illustrate that reverse and longitudinal segregation in two directions occurs in the deposition process of granular debris flows.
收录类别	CPCI（ISTP）
合作状况	国内
会议主办者	四川大学 ; 清华大学
会议网址	http://www.iahr2013.org/program_keynote.html
会议录	Proceedings of the 35th IAHR World Congress
学科主题	水利工程
语种	英语
内容类型	会议论文
源URL	[http://ir.imde.ac.cn/handle/131551/6619]
专题	成都山地灾害与环境研究所_山地灾害与地表过程重点实验室
推荐引用方式 GB/T 7714	Zhou GD. Experimental study on the deposition process of debris flows[C]. 见:第35届国际水力学大会. 成都. 2013-9-15.http://www.iahr2013.org/program_keynote.html.