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
Source PublicationINTERNATIONAL JOURNAL OF ROCK MECHANICS AND MINING SCIENCES
2019
Volume113Pages:191-210
ISSN1365-1609
AbstractIn 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.
KeywordContinuum-based discrete element method Multilayered rock strata Mining-induced stress evolution Caving zone Fracture zone Layer separation
DOI10.1016/j.ijrmms.2018.11.014
Indexed BySCI ; EI
Language英语
WOS IDWOS:000454150800019
WOS KeywordUNDERGROUND COAL-MINES ; HYDROFRACTURING CRACKS ; SQUEEZING ROCK ; HARD-ROCK ; MODEL ; ZONE ; HEIGHT ; MASS ; PROPAGATION ; STABILITY
WOS Research AreaEngineering, Geological ; Mining & Mineral Processing
WOS SubjectEngineering ; Mining & Mineral Processing
Funding OrganizationState 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]
Classification一类
Ranking4
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Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/78466
Collection流固耦合系统力学重点实验室
Affiliation1.{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
Recommended Citation
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.
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