Debris flows in Meigu county of Sichuan (SW China): Geomorphology and hazards

doi:10.4408/IJEGE.2011-03.B-027

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 > 山地表生过程与生态调控重点实验室

	Debris flows in Meigu county of Sichuan (SW China): Geomorphology and hazards
	Liu, Xilin 1; Zhang, Dan2
	2011
会议日期	2011
会议地点	Padua
关键词	Channel evolution Coefficient of velocity Debris flows Discharge ratio Junction angles Linear relationships Model tests Wenchuan Earthquake
DOI	10.4408/IJEGE.2011-03.B-027
页码	705-713
英文摘要	A torrential rainstorm on June 1, 2005 in Meigu county of Sichuan province, SW China, resulted in the generation of debris flows from two drainage basins. Map (1:50000 scale) of topography and depositing materials, coupled with the data from meteorological station and field investigation, are used to evaluate the geomorphology and hazard characteristics of debris flows. The return period of debris flows is 20 years and its magnitude is small-moderate scale. Rainstorm and hail with short duration and high intensity in the upper reaches of drainage basins are the triggering factor for debris flows. Unstable side slope in low-middle reaches and a large number of scattered materials in channels provide source materials for debris flows. Grain-size curves of debris flows are multiple peaks. The high clay content, boulder piling up boulder, mud crack show that the debris flows are viscous. Debris flows occurred abruptly, 9 local residents were killed or missed, 8 were injured and great property was lost © 2011 Casa Editrice Universita La Sapienza.
产权排序	2
会议录	5th International Conference on Debris-Flow Hazards Mitigation: Mechanics, Prediction, and Assessment
会议录出版者	American Society of Civil Engineers (ASCE)
语种	英语
ISBN号	9788895814469
内容类型	会议论文
源URL	[http://ir.imde.ac.cn/handle/131551/24062]
专题	成都山地灾害与环境研究所_山地表生过程与生态调控重点实验室
通讯作者	Liu, Xilin
作者单位	1.School of Geography and Planning, Sun Yat-Sen University, Guangzhou, Guangdong 510275, China; 2.Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu 610041, China
推荐引用方式 GB/T 7714	Liu, Xilin,Zhang, Dan. Debris flows in Meigu county of Sichuan (SW China): Geomorphology and hazards[C]. 见:. Padua. 2011.