IMHE OpenIR  > 山地灾害与地表过程重点实验室
Characteristics of damage to buildings by debris flows on 7 August 2010 in Zhouqu, Western China
Hu, K. H.1,2,3; Cui, P.1,2,3; Zhang, J. Q.1,2,3
Corresponding AuthorHu, K. H.
2012
Source PublicationNATURAL HAZARDS AND EARTH SYSTEM SCIENCES
ISSN1561-8633
Volume12Issue:7Pages:2209-2217
SubtypeArticle
AbstractA debris-flow catastrophe hit the city of Zhouqu, Gansu Province, western China, at midnight on 7 August 2010 following a local extreme rainfall of 77.3 mm h(-1) in the Sanyanyu and Luojiayu ravines, which are located to the north of the urban area. Eight buildings damaged in the event were investigated in detail to study the characteristics and patterns of damage to buildings by debris flows. It was found that major structural damage was caused by the frontal impact of proximal debris flows, while non-structural damage was caused by lateral accumulation and abrasion of sediment. The impact had a boundary decreasing effect when debris flows encountered a series of obstacles, and the inter-positioning of buildings produced so-called back shielding effects on the damage. Impact, accumulation, and abrasion were the three main patterns of damage to buildings in this event. The damage scale depended not only on the flow properties, such as density, velocity, and depth, but also on the structural strength of buildings, material, orientation, and geometry. Reinforced concrete-framed structures can effectively resist a much higher debris-flow impact than brick-concrete structures. With respect to the two typical types of structure, a classification scheme to assess building damage is proposed by referring to the Chinese Classification System of Earthquake Damage to Buildings. Furthermore, three damage scales (major structural, minor structural, and non-structural damage) are defined by critical values of impact pressure. Finally, five countermeasures for effectively mitigating the damage are proposed according to the on-site investigation.
KeywordRisk-assessment Vulnerability Model Snow
WOS HeadingsScience & Technology ; Physical Sciences
DOI10.5194/nhess-12-2209-2012
WOS Subject ExtendedGeology ; Meteorology & Atmospheric Sciences ; Water Resources
Indexed BySCI
WOS KeywordRISK-ASSESSMENT ; VULNERABILITY ; MODEL ; SNOW
Language英语
Quartile3区
TOP
WOS SubjectGeosciences, Multidisciplinary ; Meteorology & Atmospheric Sciences ; Water Resources
WOS IDWOS:000306974200009
Funding OrganizationNational Basic Research Program of China (973 Program)(2011CB409902) ; Chinese Academy Sciences(KZCX2-YW-Q03-5) ; Institute of Mountain Hazards and Environment
Citation statistics
Cited Times:48[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imde.ac.cn/handle/131551/9906
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.Minist Water Conservancy & Power, Chengdu 610041, 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
Hu, K. H.,Cui, P.,Zhang, J. Q.. Characteristics of damage to buildings by debris flows on 7 August 2010 in Zhouqu, Western China[J]. NATURAL HAZARDS AND EARTH SYSTEM SCIENCES,2012,12(7):2209-2217.
APA Hu, K. H.,Cui, P.,&Zhang, J. Q..(2012).Characteristics of damage to buildings by debris flows on 7 August 2010 in Zhouqu, Western China.NATURAL HAZARDS AND EARTH SYSTEM SCIENCES,12(7),2209-2217.
MLA Hu, K. H.,et al."Characteristics of damage to buildings by debris flows on 7 August 2010 in Zhouqu, Western China".NATURAL HAZARDS AND EARTH SYSTEM SCIENCES 12.7(2012):2209-2217.
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