中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
Numerical analysis of the dynamic evolution of mining-induced stresses and fractures in multilayered rock strata using continuum-based discrete element methods

文献类型:期刊论文

作者Ju Y; Wang YL; Su CS; Zhang DS(张东双); Ren ZY
刊名INTERNATIONAL JOURNAL OF ROCK MECHANICS AND MINING SCIENCES
出版日期2019
卷号113页码:191-210
ISSN号1365-1609
关键词Continuum-based discrete element method Multilayered rock strata Mining-induced stress evolution Caving zone Fracture zone Layer separation
DOI10.1016/j.ijrmms.2018.11.014
英文摘要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.
分类号一类
WOS关键词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
语种英语
WOS记录号WOS:000454150800019
资助机构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]
其他责任者Ju, Y
源URL[http://dspace.imech.ac.cn/handle/311007/78466]  
专题力学研究所_流固耦合系统力学重点实验室(2012-)
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.
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.

入库方式: OAI收割

来源:力学研究所

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