Experimental Study on Channel Deposition of Viscous Debris Flow over Erodible Beds
详细信息
- 责任者：Lin Xueping (Institute of Mountain Hazards and Environment ; Chinese Academy of Sciences ; Chengdu 610041 ; China) ; You Yong
- 刊名：Journal of Mountain Research
- 出版年：2013
- 卷期：31(3)
- 页码：p.327-333
- 图表：13 illus., 1 table, 6 refs.
- issnNo：ISSN1008-2786
- isbnNo：CN51-1516/P
摘要
Debris flow deposition is one of the main hazards for buildings.In order to explore the law of debris flow deposition over erodible beds,we carried out 4 groups single siltation experiment and 1 group successive siltation experiment.The single deposition experimental result shows that deposition thickness increases with the increase of channel slope debris,the increase of debris flow density and the increase of the total amount of debris flow.The bed material density has a small effect on the deposition thickness.By continuous sedimentation,along with the increase of channel slope,the second experiment in turn presented as complete cholestasis,half deposition and half erosion and scouring silting completely,and erosion began at the leading edge,gradually backward to edge of development.On the basis of analyzing of the factors of debris flow deposition thickness,this article established the prediction formula of viscous debris flow single siltation thickness through regression analysis: H = 0.005x +(1.63E-11) erc 0.003ln(sinθ) + 0.22V-0.02.