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【答案】应助回帖
★ ★ ★ ★ ★
感谢参与，应助指数 +1
tshgth: 金币+5, ★★★★★最佳答案, 非常感谢 2015-04-13 14:12:32
sunshan4379: LS-EPI+1, 感谢应助！ 2015-04-13 16:45:47
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
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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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