Landslide mechanism of waste rock dump on a soft gently dipping foundation: a case study in China

doi:10.1007/s12665-021-09407-x

	Landslide mechanism of waste rock dump on a soft gently dipping foundation: a case study in China
	Wang, Haibin 1; Sun, Guanhua 1; Sui, Tan 2
刊名	ENVIRONMENTAL EARTH SCIENCES
	2021-03-01
卷号	80 期号:5 页码:10
关键词	Waste rock dump Slope Landslide Soft foundation
ISSN号	1866-6280
DOI	10.1007/s12665-021-09407-x
英文摘要	In Miyi County of Sichuan Province of China, landslides are the most common type of waste dump failure, resulting from poorly compacted waste rock dump on weak soil. A waste dump failure on a soft, gently dipping foundation is examined in terms of the geological conditions, failure characteristics, movement processes and deposit forms, including the long run-out feature of the landslide. The waste dump failure and the subsequent deformation to the foundation are caused by an increase in pore water pressure and developed through the soft foundation underlying the heavy waste. The landslide run-out distance is influenced by the liquefiable silty clay layer. In this study, the landslide was triggered by the heavy load of waste rocks on top of a soft foundation of low-bearing capacity. The increased pore pressure in the foundation could not be released, which caused deformation of the foundation and triggered a landslide. The stability evolution is also researched in this study. In this study area: (1) the landslide mass is accelerated by the liquefaction of the saturated and water-rich silty clay layer, and the plastic deformation of the foundation caused by the collapsed waste dump; (2) the shear strength is strongly influenced by the water content; (3) when a waste dump is constructed on top of a water-sensitive gently dipping ground, it is important to provide drainage to dissipate pore water pressure; and (4) considering low factors of safety during heavy rains, secondary landslide is possible in the event of heavy rain and earthquake, indicating that heavy rainfall is the leading cause of the waste dump failure.
资助项目	National Natural Science Foundation of China[51674238]
WOS研究方向	Environmental Sciences & Ecology ; Geology ; Water Resources
语种	英语
出版者	SPRINGER
WOS记录号	WOS:000625186600004
内容类型	期刊论文
源URL	[http://119.78.100.198/handle/2S6PX9GI/25885]
专题	中科院武汉岩土力学所
通讯作者	Sun, Guanhua
作者单位	1.Chinese Acad Sci, State Key Lab Geomech & Geotech Engn, Inst Rock & Soil Mech, Wuhan 430071, Hubei, Peoples R China 2.Univ Surrey, Dept Mech Engn Sci, Guildford GU2XH, Surrey, England
推荐引用方式 GB/T 7714	Wang, Haibin,Sun, Guanhua,Sui, Tan. Landslide mechanism of waste rock dump on a soft gently dipping foundation: a case study in China[J]. ENVIRONMENTAL EARTH SCIENCES,2021,80(5):10.
APA	Wang, Haibin,Sun, Guanhua,&Sui, Tan.(2021).Landslide mechanism of waste rock dump on a soft gently dipping foundation: a case study in China.ENVIRONMENTAL EARTH SCIENCES,80(5),10.
MLA	Wang, Haibin,et al."Landslide mechanism of waste rock dump on a soft gently dipping foundation: a case study in China".ENVIRONMENTAL EARTH SCIENCES 80.5(2021):10.