Numerical analysis of the dynamic evolution of mining-induced stresses and fractures in multilayered rock strata using continuum-based discrete element methods

doi:10.1016/j.ijrmms.2018.11.014

IMECH-IR > 流固耦合系统力学重点实验室

	Numerical analysis of the dynamic evolution of mining-induced stresses and fractures in multilayered rock strata using continuum-based discrete element methods
	Ju Y ; Wang YL ; Su CS ; Zhang DS(张东双); Ren ZY
发表期刊	INTERNATIONAL JOURNAL OF ROCK MECHANICS AND MINING SCIENCES
	2019
卷号	113 页码:191-210
ISSN	1365-1609
摘要	In this study, the continuum-based discrete element method (CDEM) was adopted to simulate the evolution of mining-induced stress and fracturing during roadway tunnelling and mining in multilayered heterogeneous rock strata. The CDEM integrates the finite element method (FEM) and the discrete element method (DEM) to characterize the mining-induced stress evolution, the discontinuous fractures, separations, and caving that occur in the interfaces between multilayered rock strata. The maximum tensile-stress criterion and the Mohr-Coulomb strength criterion were used to evaluate the tensile and shear failure of the material elements. The CDEM model for rock strata was constructed by employing image processing and reconstruction approaches, using the geometrical and physical parameters that were measured from a real coal mining site. The stress evolution and compression deformation of the roof and floor strata were computed to evaluate the criticality of mining-induced disasters. The constructed model was employed to simulate and analyse the immediate roof collapse, immediate floor bulges, and the compaction of the collapse blocks, as well as the large deformation, separation, and collapse between the immediate roof and the main roof during coal seam mining. It was shown that the proposed method could predict ranges for the caving zone and fracture zone in the rock roofs that were in good agreement with the observation results from the real coal mining site.
关键词	Continuum-based discrete element method Multilayered rock strata Mining-induced stress evolution Caving zone Fracture zone Layer separation
DOI	10.1016/j.ijrmms.2018.11.014
收录类别	SCI ; EI
语种	英语
WOS记录号	WOS:000454150800019
关键词[WOS]	UNDERGROUND COAL-MINES ; HYDROFRACTURING CRACKS ; SQUEEZING ROCK ; HARD-ROCK ; MODEL ; ZONE ; HEIGHT ; MASS ; PROPAGATION ; STABILITY
WOS研究方向	Engineering, Geological ; Mining & Mineral Processing
WOS类目	Engineering ; Mining & Mineral Processing
项目资助者	State Key Research Development Program of China ; Ministry of Science and Technology of China [2017ZX05003-006, 2016YFC0600705] ; National Natural Science Foundation of China [51727807, 51674251, 51374213, 51125017, 41877275, 51608301] ; National Major Project for Science and Technology of China ; China Postdoctoral Science Foundation [2018T110158, 2016M601170, 2015M571030]
论文分区	一类
力学所作者排名	4
RpAuthor	Ju, Y
引用统计	被引频次：62[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://dspace.imech.ac.cn/handle/311007/78466
专题	流固耦合系统力学重点实验室
作者单位	1.{Ju, Yang} China Univ Min & Technol, State Key Lab Geomech & Deep Underground Engn, Xuzhou 221116, Jiangsu, Peoples R China 2.{Ju, Yang、Wang, Yongliang} China Univ Min & Technol, State Key Lab Coal Resources & Safe Min, Beijing 100083, Peoples R China 3.{Wang, Yongliang、Su, Chuanshang、Ren, Zhangyu} China Univ Min & Technol, Sch Mech & Civil Engn, Beijing 100083, Peoples R China 4.{Zhang, Dongshuang} Chinese Acad Sci, Inst Mech, Beijing 100190, Peoples R China
推荐引用方式 GB/T 7714	Ju Y,Wang YL,Su CS,et al. Numerical analysis of the dynamic evolution of mining-induced stresses and fractures in multilayered rock strata using continuum-based discrete element methods[J]. INTERNATIONAL JOURNAL OF ROCK MECHANICS AND MINING SCIENCES,2019,113:191-210.Rp_Au:Ju, Y
APA	Ju Y,Wang YL,Su CS,张东双,&Ren ZY.(2019).Numerical analysis of the dynamic evolution of mining-induced stresses and fractures in multilayered rock strata using continuum-based discrete element methods.INTERNATIONAL JOURNAL OF ROCK MECHANICS AND MINING SCIENCES,113,191-210.
MLA	Ju Y,et al."Numerical analysis of the dynamic evolution of mining-induced stresses and fractures in multilayered rock strata using continuum-based discrete element methods".INTERNATIONAL JOURNAL OF ROCK MECHANICS AND MINING SCIENCES 113(2019):191-210.

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