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Formation conditions and risk evaluation of glacial debris flow disasters along International Karakorum Highway (KKH)
语种英语
Yang, Zhiquan1,2,3; Zhu, Yingyan1,3; Zou, D.H. Steve1,3
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1031-1037
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The area of International Karakorum Highway (KKH), a mountain highway connecting northern Pakistan with northwestward China, is an area with dense and frequent glacial debris flow disasters due to the special glacial geology and landform. In this area the three basic conditions inducing glacial debris flow have developed,namely the widely distributed glacial till and ice-snow colluvium, which arise from collapse and landslide, provide the main solid sources of glacial debris flow; the very high and steep slopes, take the landform of steps with a very big gradient, to provide the moving way for glacial debris flow; and the ice-snow melt water from high-mountain, the melt water of glacier avalanche and glacial lake outburst flood provide glacial debris flow for the force to move. The valley-type debris flow is the main type of glacial debris flow occurred in the area, and it can be classified into further three sub-types according to the water source, namely glacierablation type debris flow, glacier-avalanche type debris flow and glacial-lake-outburst- flood type debris flow. Based on in situ investigation and analysis of seven controlling variables of glacial debris flow, such as occurrence frequency, catchment areas, volumes of alluvial fan, estimated outflow of every time, vegetation coverage, slope and altitudeio evaluate the risk degree of 8 chosen representative glacier debris flows along KKH. The comprehensive fuzzy evaluation method is applied to evaluate the risk degree of glacier debris flow and then the evaluation result shows a good correspond with the practical situation, i.e. this method has a valuable application foreground. © 2011 Casa Editrice Universita La Sapienza.
关键词2008 wenchuan earthquakes 3D laser scanning system Assessment and monitoring Debris flows Development feature Disaster prevention and mitigations Field observations Niujuan Gully
DOI10.4408/IJEGE.2011-03.B-094
ISBN号9788895814469
收录类别EI
EI收藏号Accession number:20122315082253
引用统计
文献类型会议论文
条目标识符http://ir.imde.ac.cn/handle/131551/24067
专题山地灾害与地表过程重点实验室
通讯作者Yang, Zhiquan
作者单位1.Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Ministry of Water Conservancy, Chengdu, China;
2.Graduate University of Chinese Academy of Sciences, Beijing, China;
3.Key Laboratory of Mountain Hazards and Earth Surface Processes, Chinese Academy of Sciences, Chengdu, 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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Yang, Zhiquan,Zhu, Yingyan,Zou, D.H. Steve. Formation conditions and risk evaluation of glacial debris flow disasters along International Karakorum Highway (KKH)[C]//R. Genevos, D.L. Hamlion, A. Prestinuizi:American Society of Civil Engineers (ASCE),2011:1031-1037.
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