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A study on the properties of the 12 May Wenchuan earthquake-induced debris flow
语种英语
Han, Y.S.1; Han, J.2; Zhu, Y.Y.2; Kong, Y.P.3; Su, F.H.2; Li, L.W.1; Huang, P.1
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865-873
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 flows triggered by earthquakes are recognized globally for their huge destructive power. Studies on the development features of debris flow are essential for disaster prevention and mitigation and the results can be used as a scientific basis for assuring public security, preventing debris-flow disasters and reconstructing the afflicted areas by earthquake. Taking the, Niujuan Gully, as the case study area, this paper discusses field observations of the initiation and path of debris flows in the epicentral area of the 12 May, 2008 Wenchuan Earthquake. Based on the natural conditions and debris flow distribution in the study area, a field control network was established to monitor the gully bed, typical slopes and channel sections of different kinds of debris flows that initiated from hillslopes and gullies. We observed debris flows and their change under different rainfall circumstances, surveyed slope, section, channel and gully bed by means of GPS, GPT-3002 total-station instrument and 3D laser scanning system and drew digital topographic maps, sectional maps and profile maps with a 1:50 scale. Based on the observed data, we probed into the erosion laws and development features(including erosion, transportation, deposition, etc) of different kinds of debris flows and analyzed debris flow discharge, erosion-deposition variation and destructive magnitude. The findings provided data support for debris flow risk assessment and monitoring systems. © 2011 Casa Editrice Universita La Sapienza.
关键词Debris flows Flow depth Residual layers Roll waves Velocity profiles
DOI10.4408/IJEGE.2011-03.B-025
ISBN号9788895814469
收录类别EI
EI收藏号Accession number:20122315082235
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文献类型会议论文
条目标识符http://ir.imde.ac.cn/handle/131551/24068
专题山地灾害与地表过程重点实验室
通讯作者Han, Y.S.
作者单位1.School of Architecture and Urban Planning, Hunan University of Science and Technology, Xiangtan 411201, Hunan, China;
2.Institute of Mountain Hazards and Environment, CAS, Chengdu 610065, Sichuan, China;
3.China Academy of Transportation Sciences, Ministry of Communications, Beijing 100029, China
第一作者单位School of Architecture and Urban Planning, Hunan University of Science and Technology, Xiangtan 411201, Hunan, China
通讯作者单位School of Architecture and Urban Planning, Hunan University of Science and Technology, Xiangtan 411201, Hunan, China
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Han, Y.S.,Han, J.,Zhu, Y.Y.,et al. A study on the properties of the 12 May Wenchuan earthquake-induced debris flow[C]//R. Genevos, D.L. Hamlion, A. Prestinuizi:American Society of Civil Engineers (ASCE),2011:865-873.
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