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Dynamic analysis and numerical modeling of the 2015 catastrophic landslide of the construction waste landfill at Guangming, Shenzhen, China
Ouyang, Chaojun1,2; Zhou, Kaiqi3; Xu, Qiang4; Yin, Jianhua5; Peng, Dalei4; Wang, Dongpo4; Li, Weile4
Corresponding AuthorChaojun Ouyang
2017
Source PublicationLANDSLIDES
ISSN1612-510X
EISSN1612-5118
Volume14Issue:2Pages:705-718
SubtypeArticle
Abstract

Since lots of underground and slope excavation works were conducted during the urbanization process, an increasing number of sites in ravines around a city have been used to stockpile a large amount of excavated soils. This brings a huge challenge for researchers and managers in the risk evaluation and mitigation of potential dangers of these man-made construction waste landfills. This paper describes a recently large landslide of the construction waste landfill, which occurred at a site of Guangming new district in Shenzhen, China, on December 20, 2015. This catastrophic landslide caused the death of 69 persons and 8 persons are still missing. In this paper, this landslide was numerically simulated and analyzed. In spite of neither high-intensity rainfall nor antecedent rainfall, a slope of this landfill with a relative height of 111 m sided and caused about 2.34 million cubic meters of the soils to travel over a gentle terrain more than 1.2 km. This means that the landslide mobility index (H/L = 0.092) is much lower than a general designed value and the values in most other cases. A depth-integrated continuum method and a MacCormack-TVD finite difference algorithm are adopted, in this paper, to numerically simulate the dynamic process of this large landslide. It is found that a Coulomb friction model with consideration of the pore water pressure effects can well reproduce the main characteristics of the dynamic process of this landslide. Sensitivity analysis has demonstrated that the high pore water pressure in the soils plays a significant role in its mobility and is a key factor to the severity of this landslide.

KeywordLandslide Excess Pore Water Pressure Mobility Maccormack-tvd Scheme Numerical Modeling Landfill
WOS HeadingsScience & Technology ; Technology ; Physical Sciences
DOI10.1007/s10346-016-0764-9
URL查看原文
WOS Subject ExtendedEngineering ; Geology
Indexed BySCI
WOS KeywordMOBILITY ; SIMULATION ; HAZARD ; TAIWAN ; MOTION ; ANGLE
Language英语
Quartile2区
TOP
WOS SubjectEngineering, Geological ; Geosciences, Multidisciplinary
WOS IDWOS:000398889900020
Funding OrganizationNSFC(41572303 ; CAS "Light of West China" ; Youth Innovation Promotion Association ; National State Key Project "973" grant from the Ministry of Science and Technology of the People's Republic of China(2014CB047001) ; 4151001059)
Citation statistics
Cited Times:79[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imde.ac.cn/handle/131551/17863
Collection山地灾害与地表过程重点实验室
Affiliation1.Chinese Acad Sci, Key Lab Mt Hazards & Surface Proc, Chengdu 610041, Peoples R China
2.Chinese Acad Sci, Inst Mt Hazards & Environm, Chengdu 610041, Peoples R China
3.Huazhong Univ Sci & Technol, Dept Mech, Wuhan 430074, Peoples R China
4.Chengdu Univ Technol, Natl Lab Geohazard Prevent & Geoenvironm Protect, Chengdu 610059, Peoples R China
5.Hong Kong Polytech Univ, Dept Civil & Environm Engn, Hong Kong, Hong Kong, 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
Ouyang, Chaojun,Zhou, Kaiqi,Xu, Qiang,et al. Dynamic analysis and numerical modeling of the 2015 catastrophic landslide of the construction waste landfill at Guangming, Shenzhen, China[J]. LANDSLIDES,2017,14(2):705-718.
APA Ouyang, Chaojun.,Zhou, Kaiqi.,Xu, Qiang.,Yin, Jianhua.,Peng, Dalei.,...&Li, Weile.(2017).Dynamic analysis and numerical modeling of the 2015 catastrophic landslide of the construction waste landfill at Guangming, Shenzhen, China.LANDSLIDES,14(2),705-718.
MLA Ouyang, Chaojun,et al."Dynamic analysis and numerical modeling of the 2015 catastrophic landslide of the construction waste landfill at Guangming, Shenzhen, China".LANDSLIDES 14.2(2017):705-718.
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