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Probability distribution of debris flow depth and its implication in risk assessment
语种英语
Li, Yong1,2; Su, Pengcheng1,2,3; Liu, Jingjing1,2,3
2011
会议录名5th International Conference on Debris-Flow Hazards Mitigation: Mechanics, Prediction, and Assessment
会议录编者/会议主办者R. Genevos ; D.L. Hamlion ; A. Prestinuizi
页码941-946
会议名称5th International Conference on Debris-Flow Hazard Mitigation: Mechanics, Prediction, and Assessment
会议日期2011
会议地点Padua
会议举办国Italy
出版者American Society of Civil Engineers (ASCE)
产权排序1
摘要Debris flow moves in manner of successive surges and deposits by piling of surges. The surge occurs randomly and varies in properties and magnitude. This study explores the probability distribution of velocity and derives the distribution of flow depth based on observations in Jiangjia Gully in the southwest of China. The Weibull distribution is found to be well applicable to both the velocity and depth, with parameters varying in a rather small range. Therefore, the distribution is expected to hold in general for debris flows in different conditions and can be used to estimate the discharge of a potential debris flow. The estimated quantity is better than those inferred from the rainfall at a given frequency because it incorporates both the variation of surges and the real condition of the valley. In conclusion, The distribution provides a more reliable method of risk assessment of debris flow. © 2011 Casa Editrice Universita La Sapienza.
关键词2008 wenchuan earthquakes Abundant materials Debris flows Empirical formulas Landslide dam Mozi gully Remote sensing images Wenchuan Earthquake
DOI10.4408/IJEGE.2011-03.B-084
ISBN号9788895814469
收录类别EI
EI收藏号Accession number:20122315082243
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文献类型会议论文
条目标识符http://ir.imde.ac.cn/handle/131551/24065
专题山地灾害与地表过程重点实验室
通讯作者Li, Yong
作者单位1.Key Laboratory of Mountain Hazards and Surface Process, Chinese Academy of Sciences, Chengdu, 610041, China;
2.Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Ministry of Water Conservancy, Chengdu, 610041, China;
3.Graduate School of Chinese Academy of Sciences, Beijing, 100039, China
第一作者单位中国科学院水利部成都山地灾害与环境研究所
通讯作者单位中国科学院水利部成都山地灾害与环境研究所
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Li, Yong,Su, Pengcheng,Liu, Jingjing. Probability distribution of debris flow depth and its implication in risk assessment[C]//R. Genevos, D.L. Hamlion, A. Prestinuizi:American Society of Civil Engineers (ASCE),2011:941-946.
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