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Engineering measures for debris flow hazard mitigation in the Wenchuan earthquake area
Chen, Xiaoqing; Cui, Peng; You, Yong; Chen, Jiangang; Li, Deji
Corresponding AuthorChen, Xiaoqing
2015
Source PublicationENGINEERING GEOLOGY
ISSN0013-7952
EISSN1872-6917
Volume194Pages:73-85
SubtypeArticle
AbstractAvalanches and landslides caused by the Wenchuan earthquake in the Longmen Mountains area provide abundant loose solids for debris flows, and a large number of debris flows have occurred during the period 2008-2012. The engineering measures in certain gullies failed, causing serious damage and loss of life. Judging from the debris flow characteristics in the Wenchuan earthquake area, engineering measures should be better constructed after the active period of debris flows in severely affected areas. To reduce debris flow disasters, this paper proposes a mitigation method and design principle based on the transport capacity of the main river. A series of check dams with various opening sizes was designed by investigating and analyzing existing cases. Furthermore, a new type of drainage channel with prefabricated reinforced concrete boxes is proposed. Finally, a case study of the Xiaogangjian Gully, which is a typical debris flow gully in the Wenchuan earthquake area, is presented. This system of engineering measures is based on the main river's transport capacity and consists of five check dams with various opening sizes, a drainage channel with sidewalls constructed of prefabricated reinforced concrete boxes, and a debris flow basin at the base of the main gully. The debris flow mitigation measures constructed in the Xiaogang,jian Gully effectively resisted a debris flow with a 50-year return period that was triggered by rainfall on July 26, 2012. Specifically, these measures effectively protected a highway and minimized debris flow damage. Thus, the layout and engineered structures involved in this new engineering technique can provide a reference design for debris flow hazard mitigation. (C) 2014 Elsevier B.V. All rights reserved.
KeywordDebris Flow Engineering Measures Drainage Channel Check Dam Wenchuan Earthquake
WOS HeadingsScience & Technology ; Technology ; Physical Sciences
DOI10.1016/j.enggeo.2014.10.002
WOS Subject ExtendedEngineering ; Geology
Indexed BySCI
WOS Keyword13 AUGUST 2010 ; CHINA ; SICHUAN
Language英语
Quartile3区
TOP
WOS SubjectEngineering, Geological ; Geosciences, Multidisciplinary
WOS IDWOS:000360416400008
Funding OrganizationChinese Academy of Sciences(KZZD-EW-05-01) ; Key Projects in the National Science and Technology Pillar Program(2011BAK12B03)
Citation statistics
Cited Times:67[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imde.ac.cn/handle/131551/10916
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, Sichuan, Peoples R China
3.Minist Water Conservancy & Power, Chengdu 610041, Sichuan, Peoples R China
Recommended Citation
GB/T 7714
Chen, Xiaoqing,Cui, Peng,You, Yong,et al. Engineering measures for debris flow hazard mitigation in the Wenchuan earthquake area[J]. ENGINEERING GEOLOGY,2015,194:73-85.
APA Chen, Xiaoqing,Cui, Peng,You, Yong,Chen, Jiangang,&Li, Deji.(2015).Engineering measures for debris flow hazard mitigation in the Wenchuan earthquake area.ENGINEERING GEOLOGY,194,73-85.
MLA Chen, Xiaoqing,et al."Engineering measures for debris flow hazard mitigation in the Wenchuan earthquake area".ENGINEERING GEOLOGY 194(2015):73-85.
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