IMHE OpenIR  > 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
Language英语
Liu, Xilin1; Zhang, Dan2
2011
Source Publication5th International Conference on Debris-Flow Hazards Mitigation: Mechanics, Prediction, and Assessment
Author of SourceR. Genevos ; D.L. Hamlion ; A. Prestinuizi
Pages705-713
meeting5th International Conference on Debris-Flow Hazard Mitigation: Mechanics, Prediction, and Assessment
Conference Date2011
Conference PlacePadua
CountryItaly
PublisherAmerican Society of Civil Engineers (ASCE)
Contribution Rank2
AbstractA 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.
KeywordChannel evolution Coefficient of velocity Debris flows Discharge ratio Junction angles Linear relationships Model tests Wenchuan Earthquake
DOI10.4408/IJEGE.2011-03.B-027
ISBN9788895814469
Indexed ByEI
Accession numberAccession number:20122315082219
Citation statistics
Document Type会议论文
Identifierhttp://ir.imde.ac.cn/handle/131551/24062
Collection山地表生过程与生态调控重点实验室
Corresponding AuthorLiu, Xilin
Affiliation1.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
First Author AffilicationSchool of Geography and Planning, Sun Yat-Sen University, Guangzhou, Guangdong 510275, China
Corresponding Author AffilicationSchool of Geography and Planning, Sun Yat-Sen University, Guangzhou, Guangdong 510275, China
Recommended Citation
GB/T 7714
Liu, Xilin,Zhang, Dan. Debris flows in Meigu county of Sichuan (SW China): Geomorphology and hazards[C]//R. Genevos, D.L. Hamlion, A. Prestinuizi:American Society of Civil Engineers (ASCE),2011:705-713.
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