Debris-flow distribution and hazards along the Sichuan-Tibet and Sino-Nepal highway, Tibet, China

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 > 成都山地所知识仓储（2009年以前）

	Debris-flow distribution and hazards along the Sichuan-Tibet and Sino-Nepal highway, Tibet, China
	He, YP; Chen, J; Li, Y; Cui, P
	2003
会议日期	SEP 10-12, 2003
会议地点	Davos
关键词	debris flow distribution hazards highway Tibet
页码	955-964
国家	SWITZERLAND
英文摘要	The Sichuan-Tibet and Sino-Nepal highways, the main highways in south Tibet, are vital not only for the local economic development, but also for the national defense. The absence of railways in this area leads to a dependence on highway transportation. However, the highways are severely threatened by a wide distribution of mountain hazards, such as debris flows, landslides, and avalanches. These are the result of the complex geologic structures, complicated strata and lithologic characteristics, intensive geotectonic movements, a great variety of hydrothermal conditions and strong glacial action. Of all the mountain hazards, debris flows are the most important. In this paper, 1848 debris flows and their distribution are presented; hazards and their causes are analyzed in detail. Lastly, the authors take the example of debris flow hazards of Zamunongba Gully and the subsequent dilute debris flow resulting from the outburst of Yigong Lake to introduce the reason, hazard process, and the mitigation measures of this kind of great hazard event, and calculate the maximum peak flow, velocity, and the breach width using some dam-break models. Comparing with the field survey, the dam-break models of U.S. Weather bureau (Wetmore & Fread 1981, 1984) and Stocks (Rouse 1950) are suitable for the calculation of the debris dam breach in this case. According to the calculation, the maximum peak flow, velocity and width of the debris dam-break flood at the breach section are 122,000 m(3)/s, 9.7 m/s, and 350 m.
源文献作者	Rickenmann, D ; Chen, C
产权排序	1
会议录	DEBRIS-FLOW HAZARDS MITIGATION: MECHANICS, PREDICTION, AND ASSESSMENT, VOLS 1 AND 2
会议录出版者	MILLPRESS SCIENCE PUBLISHERS
会议录出版地	ROTTERDAM
语种	英语
ISBN号	90-77017-78-X
WOS记录号	WOS:000189451200082
内容类型	会议论文
源URL	[http://ir.imde.ac.cn/handle/131551/33532]
专题	成都山地灾害与环境研究所_成都山地所知识仓储（2009年以前）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
通讯作者	He, YP
作者单位	Chinese Acad Sci, Chengdu Inst Mt Hazards & Environm, Chengdu, Sichuan, Peoples R China
推荐引用方式 GB/T 7714	He, YP,Chen, J,Li, Y,et al. Debris-flow distribution and hazards along the Sichuan-Tibet and Sino-Nepal highway, Tibet, China[C]. 见:. Davos. SEP 10-12, 2003.