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Forecast method of multimode system for debris flow risk assessment in Qingping Town, Sichuan Province, China
Tian Shujun1,2; Kong Jiming1,3; Li Xiuzhen1,3
Corresponding AuthorKong, JM (孔纪名)
2011
Source PublicationJOURNAL OF MOUNTAIN SCIENCE
ISSN1672-6316
Volume8Issue:4Pages:592-602
SubtypeArticle
AbstractThe Wenchuan Earthquake of May 12, 2008 triggered large numbers of geo-hazards. The heavy rain on 13 August 2010 triggered debris flows with total volume of more than 6 million cubic meters and the debris flows destroyed 500 houses and infrastructure built after the Wenchuan Earthquake. The study area Qingping Town was located in the northwestern part of the Sichuan Basin of China, which needs the second reconstructions and the critical evaluation of debris flow. This study takes basin as the study unit and defines collapse, landslide and debris flow hazard as a geo-hazard system. A multimode system composed of principal series system and secondary parallel system were established to evaluate the hazard grade of debris flow in 138 drainage basins of Qingping Town. The evaluation result shows that 30.43% of study basins (42 basins) and 24.58% of study area, are in extremely high or high hazard grades, and both percentage of basin quantity and percentage of area in different hazard grades decrease with the increase of hazard grade. According to the geo-hazard data from the interpretation of unmanned plane image with a 0.5-m resolution and field investigation after the Wenchuan Earthquake and 8.13 Big Debris Flow, the ratio of landslides and collapses increased after the Wenchuan Earthquake and the ratios of extremely high or high hazard grades were more than moderate or low hazard grades obviously. 23 geo-hazards after 8.13 Big Debris Flow in Qingping town region all occurred in basins with extremely high or high hazard grades, and 9 debris flows were in basins with extremely high hazard grade. The model of multimode system for critical evaluation could forecast not only the collapse and landslide but also the debris flow precisely when the basin was taken as the study unit.
KeywordMultimode System Risk Assessment Debris Flow Landslide Wenchuan Earthquake Qingping Town
WOS HeadingsScience & Technology ; Life Sciences & Biomedicine
DOI10.1007/s11629-011-2130-7
WOS Subject ExtendedEnvironmental Sciences & Ecology
Indexed BySCI
WOS KeywordLANDSLIDE SUSCEPTIBILITY ; WENCHUAN EARTHQUAKE ; SLOPE STABILITY ; HAZARD ; MODEL ; SCALE ; BASIN ; INDIA ; AREA ; GIS
Language英语
Quartile4区
TOP
WOS SubjectEnvironmental Sciences
WOS IDWOS:000293027700011
Funding OrganizationState Key Fundamental Research Program of China(50639070) ; Chinese Academy of Sciences(KKCX1-YW-03)
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Cited Times:3[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imde.ac.cn/handle/131551/5496
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.SW Univ Sci & Technol, Sch Civil Engn & Architecture, Mianyang 621010, Peoples R China
3.Chinese Acad Sci, Inst Mt Hazards & Environm, 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
Tian Shujun,Kong Jiming,Li Xiuzhen. Forecast method of multimode system for debris flow risk assessment in Qingping Town, Sichuan Province, China[J]. JOURNAL OF MOUNTAIN SCIENCE,2011,8(4):592-602.
APA Tian Shujun,Kong Jiming,&Li Xiuzhen.(2011).Forecast method of multimode system for debris flow risk assessment in Qingping Town, Sichuan Province, China.JOURNAL OF MOUNTAIN SCIENCE,8(4),592-602.
MLA Tian Shujun,et al."Forecast method of multimode system for debris flow risk assessment in Qingping Town, Sichuan Province, China".JOURNAL OF MOUNTAIN SCIENCE 8.4(2011):592-602.
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