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Prediction of Debris-flow Danger Area by Combining Hydrological and Inundation Simulation Methods
Cui Peng1,2; Hu Kaiheng1,2; Zhuang Jianqi1,3; Yang Yu1,2; Zhang Jianqiang1,3
Corresponding AuthorCui, P(崔鹏)
2011
Source PublicationJOURNAL OF MOUNTAIN SCIENCE
ISSN1672-6316
EISSN1993-0321
Volume8Issue:1Pages:1-9
SubtypeArticle
AbstractDebris flows have caused serious human casualties and economic losses in the regions strongly affected by the Ms8.0 Wenchuan earthquake of 2008. Debris flow mitigation and risk assessment is a key issue for reconstruction. The existing methods of inundation simulation are based on historical disasters and have no power of prediction. The rain-flood method can not yield detailed flow hydrograph and does not meet the need of inundation simulation. In this paper, the process of water flow was studied by using the Arc-SCS model combined with hydraulic method, and then the debris flow runoff process was calculated using the empirical formula combining the result from Arc-SCS. The peak discharge and runoff duration served as input of inundation simulation. Then, the dangerous area is predicted using kinematic wave method and Manning equation. Taking the debris flow in Huashiban gully in Beichuan County, Sichuan Province, China on 24 Sep. 2008 as example, the peak discharge of water flow and debris flow were calculated as 35.52 m(3).s(-1) and 215.66 m(3).s(-), with error of 4.15% compared to the measured values. The simulated area of debris-flow deposition was 161,500 m(2), vs. the measured area of 144,097 m(2), in error of 81.75%. The simulated maximum depth was 12.3 m, consistent with the real maximum depth between 10 and 15 m according to the field survey. The minor error is mainly due to the flow impact on buildings and variations in cross-section configuration. The present methodology can be applied to predict debris flow magnitude and evaluate its risk in other watersheds inthe earthquake area.
KeywordDebris Flow Arc-scs Model Inundation Simulation Risk Analysis Wenchuan Earthquake
WOS HeadingsScience & Technology ; Life Sciences & Biomedicine
DOI10.1007/s11629-011-2040-8
WOS Subject ExtendedEnvironmental Sciences & Ecology
Indexed BySCI
Language英语
Quartile4区
WOS SubjectEnvironmental Sciences
WOS IDWOS:000289005000001
Funding OrganizationNational Basic Research Program of China (973 Program)(2011CB409902) ; National Natural Sciences Foundation of China(40671025)
Citation statistics
Cited Times:42[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imde.ac.cn/handle/131551/5521
Collection山地灾害与地表过程重点实验室
Affiliation1.Chinese Acad Sci, Key Lab Mt Hazards & Earth Surface Proc, Chengdu 610041, Peoples R China
2.Chinese Acad Sci, Inst Mt Hazards & Environm, Chengdu 610041, Peoples R China
3.Chinese Acad Sci, Grad Sch, Beijing 100049, Peoples R China
First Author Affilication中国科学院水利部成都山地灾害与环境研究所
Recommended Citation
GB/T 7714
Cui Peng,Hu Kaiheng,Zhuang Jianqi,et al. Prediction of Debris-flow Danger Area by Combining Hydrological and Inundation Simulation Methods[J]. JOURNAL OF MOUNTAIN SCIENCE,2011,8(1):1-9.
APA Cui Peng,Hu Kaiheng,Zhuang Jianqi,Yang Yu,&Zhang Jianqiang.(2011).Prediction of Debris-flow Danger Area by Combining Hydrological and Inundation Simulation Methods.JOURNAL OF MOUNTAIN SCIENCE,8(1),1-9.
MLA Cui Peng,et al."Prediction of Debris-flow Danger Area by Combining Hydrological and Inundation Simulation Methods".JOURNAL OF MOUNTAIN SCIENCE 8.1(2011):1-9.
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