A Case Study of the Rapid and Long Runout Landslide at Hong'ao Waste Disposal Site in Shenzhen, China

doi:10.1007/s12205-020-1399-x

	A Case Study of the Rapid and Long Runout Landslide at Hong'ao Waste Disposal Site in Shenzhen, China
	Wang, Kai 2; Zhang, Shaojie 1; Wei, Fangqiang 3; Yang, Hongjuan 1
刊名	KSCE JOURNAL OF CIVIL ENGINEERING
	2020-03-01
卷号	24 期号:3 页码:727-739
关键词	Waste disposal site Municipal solid waste Landslide Static liquefaction Groundwater table
ISSN号	1226-7988
DOI	10.1007/s12205-020-1399-x
通讯作者	Wei, Fangqiang(fqwei@imde.ac.cn)
英文摘要	A disastrous landslide occurred at the Hong'ao Waste Disposal Site in Shenzhen, China on December 20, 2015, involving a volume of 2.7 x 10(6) m(3) of municipal solid waste (MSW) that travelled a distance of 700 to 800 m, covering an area of 3.8 x 10(5) m(2) and caused 90 casualties. The geomorphological and geological characteristics of the waste disposal site were carefully examined and the landslide was classified as an extremely rapid flowslide. The major feature of the waste site was the basin-like structure with the bottom composed of low-permeable granite bedrock. Therefore, surface runoff could easily accumulate in the MSW due to the lack of drainage system, resulting in an increasing groundwater level. Laboratory tests, including physical characterization, Consolidation Isotropic Undrained (CIU) test and direct shear test were conducted to characterize the material properties of the MSW. Physical characterization indicated the MSW belongs to sandy silt, CIU tests indicated that static liquefaction was conducive to high-speed sliding. The direct shear test data were used to carry out numerical analysis of slope stability, in which the continuous rise in the groundwater level was taken into account. Numerical simulation showed that the pore water pressure induced by underground water seepage and gradual loading from the upper MSW placement aggravate the failure. Consequently, the main reason of the landslide could be concluded as follows: 1) the perched groundwater level due to a large upstream catchment area and the lack of drainage system; 2) the excess pore water pressure induced by static liquefaction played a significant role in its mobility.
资助项目	National Key Research and Development Program of China[2018YFC1505503] ; Science and Technology Service Network Initiative[KFJ-SW-STS-180] ; Key Scientific Research project of Higher Education Institutions, Henan Province, China[20A560024]
WOS研究方向	Engineering
语种	英语
出版者	KOREAN SOCIETY OF CIVIL ENGINEERS-KSCE
WOS记录号	WOS:000511053100003
内容类型	期刊论文
源URL	[http://119.78.100.138/handle/2HOD01W0/10396]
专题	中国科学院重庆绿色智能技术研究院
通讯作者	Wei, Fangqiang
作者单位	1.Chinese Acad Sci, Inst Mt Hazards & Environm, Key Lab Mt Hazards & Earth Surface Proc, Chengdu 610041, Peoples R China 2.Zhongyuan Univ Technol, Inst Civil Engn, Zhengzhou 450007, Peoples R China 3.Chinese Acad Sci, Chongqing Inst Green & Intelligent Technol, Chongqing 400714, Peoples R China
推荐引用方式 GB/T 7714	Wang, Kai,Zhang, Shaojie,Wei, Fangqiang,et al. A Case Study of the Rapid and Long Runout Landslide at Hong'ao Waste Disposal Site in Shenzhen, China[J]. KSCE JOURNAL OF CIVIL ENGINEERING,2020,24(3):727-739.
APA	Wang, Kai,Zhang, Shaojie,Wei, Fangqiang,&Yang, Hongjuan.(2020).A Case Study of the Rapid and Long Runout Landslide at Hong'ao Waste Disposal Site in Shenzhen, China.KSCE JOURNAL OF CIVIL ENGINEERING,24(3),727-739.
MLA	Wang, Kai,et al."A Case Study of the Rapid and Long Runout Landslide at Hong'ao Waste Disposal Site in Shenzhen, China".KSCE JOURNAL OF CIVIL ENGINEERING 24.3(2020):727-739.