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| title：Compression-shear Strength Criterion of Coal-rock Combination Model Considering Interface Effect |
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Compression-shear strength criterion of coal-rock combination model considering interface effect 作者:Zhao, ZH (Zhao, Zenghui)[ 1,2,3 ] ; Wang, WM (Wang, Weiming)[ 4 ] ; Wang, LH (Wang, Lihua)[ 4 ] ; Dai, CQ (Dai, Chunquan)[ 4 ] TUNNELLING AND UNDERGROUND SPACE TECHNOLOGY 卷: 47 页: 193-199 DOI: 10.1016/j.tust.2015.01.007 出版年: MAR 2015 查看期刊信息 摘要 Surrounding rocks around coal tunnel in western mining area of China are typical composite structures composed of weakly cemented soft rock and hard coal, and the tunnel stability is closely related to the overall mechanical behavior of the combination body. The equivalent homogeneous model of coal-rock combination body and its stress state expressions were firstly established based on the strain energy equivalency principle. Then, the general compression-shear failure criterion of the equivalent model which takes into account the cohesive strength of the interface between coal and soft rock was derived by assuming that the yielded mediums all met Mohr-Coulomb criterion. Furthermore, accuracy of the proposed analytical model was verified by carrying out laboratory test for coal-mudstone specimen, and it found that the theoretical results were in good agreement with the test values. Strength of the combination body lies between the strong body and weak body. Finally, the effects of interface cohesion strength, rock thickness and stress level on the failure behavior of combination model were analyzed based on the analytical model. Results show that the proposed model not only contains the classical sliding failure theory for two-dimensional weak plane presented by Jaeger, but also reflect strength behavior of a more complex composite model composed of different rock mediums and structural plane. Thus, the analytical model provides theoretical basis for further studying the mechanical behavior of coal-rock combination model. (C) 2015 Elsevier Ltd. All rights reserved. 关键词 作者关键词:Coal-rock combination body; Equivalent model; Compression-shear strength criterion; Interface effect KeyWords Plus:MECHANISM 作者信息 通讯作者地址: Zhao, ZH (通讯作者) 显示增强组织信息的名称 Shandong Univ Sci & Technol, State Key Lab Min Disaster Prevent & Control Cofo, Qingdao 266590, Peoples R China. 地址: 显示增强组织信息的名称 [ 1 ] Shandong Univ Sci & Technol, State Key Lab Min Disaster Prevent & Control Cofo, Qingdao 266590, Peoples R China 显示增强组织信息的名称 [ 2 ] Shandong Univ Sci & Technol, Minist Sci & Technol, Qingdao 266590, Peoples R China [ 3 ] Shandong Univ Sci & Technol, Coll Min & Safety Engn, Qingdao 266590, Peoples R China 显示增强组织信息的名称 [ 4 ] Shandong Univ Sci & Technol, Coll Civil Engn & Architecture, Qingdao 266590, Peoples R China 电子邮件地址:tgzyzzh@163.com 基金资助致谢 基金资助机构 授权号 National Natural Science Foundation of China 51174128 41472280 51274133 51474137 Specialized Research Fund for the Doctoral Program of Higher Education of China 20123718110007 查看基金资助信息 出版商 PERGAMON-ELSEVIER SCIENCE LTD, THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND 类别 / 分类 研究方向:Construction & Building Technology; Engineering Web of Science 类别:Construction & Building Technology; Engineering, Civil 文献信息 文献类型:Article 语种:English 入藏号: WOS:000350518700019 ISSN: 0886-7798 期刊信息 Impact Factor (影响因子): Journal Citation Reports® 其他信息 IDS 号: CC6ZY Web of Science 核心合集中的 "引用的参考文献": 40 Web of Science 核心合集中的 "被引频次": 0 |
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