Deformation and failure of a high-steep slope induced by multi-layer coal mining

doi:10.1007/s11629-019-5941-6

CORC > 成都山地灾害与环境研究所 > 中国科学院水利部成都山地灾害与环境研究所 > Journal of Mountain Science > Journal of Mountain Science-2020 > Vol17 No.12

	Deformation and failure of a high-steep slope induced by multi-layer coal mining
	Yu, Jian-le; Zhao, Jian-jun; Yan, Hao-yuan; Lai, Qi-yi; Huang, Run-qiu; Liu, Xiu-wei; Li, Yang-chun
刊名	JOURNAL OF MOUNTAIN SCIENCE
	2020
卷号	17 期号:12 页码:2942-2960
关键词	High steep slope Discrete element method Multilayer coal mining Mountain mine geological hazard Subsidence toppling deformation Mining schemes optimization
ISSN号	1672-6316
DOI	10.1007/s11629-019-5941-6
英文摘要	During underground mining, accurate revelation on the deformation and failure mechanisms of a high-steep slope under multi-layer mining conditions facilitates the prevention and control of geological disasters in mines. Numerical simulation based on discrete element theory can be used to explore the characteristics and mechanism of action of deformation and failure of a slope under complex geological and multi-layer mining conditions. By utilising PFC2D (particle flow code) software, the deformation and failure characteristics of a high-steep slope in Faer Coal Mine in Guizhou Province, China were investigated. Additionally, the mechanism of influence of different numbers of mining layers on the deformation and failure of the high and steep slope was elucidated. The result showed that after the goaf passed by the slope toe, multi-layer mining aggravated the subsidence and deformation of the slope toe: the slope toppled forward as it sank. The toppling of the slope changed the slope structures: the strata in the front of the slope were transformed from anti-dip to down-dip features. Extruded by collapsed-toppled rock mass, the slope toe and the rock mass located in the lower part of the slope toe generally exhibited a locking effect on the slope. Multi-layer mining degraded the overall stability of the slope, in that the total displacement of the slope was much greater than the total mining thickness of the coal seams. Based on the aforementioned research, ideas for preventing and controlling geological disasters during mining operations under a high-steep slope were proposed.
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语种	英语
内容类型	期刊论文
源URL	[http://ir.imde.ac.cn/handle/131551/57072]
专题	Journal of Mountain Science_Journal of Mountain Science-2020_Vol17 No.12
推荐引用方式 GB/T 7714	Yu, Jian-le,Zhao, Jian-jun,Yan, Hao-yuan,et al. Deformation and failure of a high-steep slope induced by multi-layer coal mining[J]. JOURNAL OF MOUNTAIN SCIENCE,2020,17(12):2942-2960.
APA	Yu, Jian-le.,Zhao, Jian-jun.,Yan, Hao-yuan.,Lai, Qi-yi.,Huang, Run-qiu.,...&Li, Yang-chun.(2020).Deformation and failure of a high-steep slope induced by multi-layer coal mining.JOURNAL OF MOUNTAIN SCIENCE,17(12),2942-2960.
MLA	Yu, Jian-le,et al."Deformation and failure of a high-steep slope induced by multi-layer coal mining".JOURNAL OF MOUNTAIN SCIENCE 17.12(2020):2942-2960.