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
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出版日期 | 2019 |
卷号 | 113页码:191-210 |
关键词 | Continuum-based discrete element method Multilayered rock strata Mining-induced stress evolution Caving zone Fracture zone Layer separation |
ISSN号 | 1365-1609 |
DOI | 10.1016/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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