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baiyuefei
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2楼2014-03-25 22:46:16
baiyuefei
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Response models of weakly consolidated soft rock roadway under different interior pressures considering dilatancy effect 作者:Zhao, ZH (Zhao Zeng-Hui)[ 1 ] ; Wang, WM (Wang Wei-Ming)[ 2 ] ; Wang, L (Wang Lei)[ 2 ] JOURNAL OF CENTRAL SOUTH UNIVERSITY 卷: 20 期: 12 页: 3736-3744 DOI: 10.1007/s11771-013-1902-3 出版年: DEC 2013 查看期刊信息 摘要 Surrounding rocks of weakly consolidated soft rock roadway show obvious strain softening and dilatancy effects after excavation. A damage coefficient concerning modulus attenuation was defined. Response models of stress and displacement of surrounding rock of soft rock roadway and analytical expressions to calculate plastic zones under different interior pressures and non-uniform original rock stresses were derived based on damage theories and a triple linear elastic-plastic strain softening model. Influence laws of dilatancy gradient on damage development, distributions of stresses and displacement in plastic region were analyzed. Interior pressure conditions to develop plastic region under different origin rock stresses were established and their influences on plastic region distribution were also discussed. The results show that the order of maximum principle stress is exchanged between sigma(theta) and sigma(r) with the increase of interior pressure P-0, which causes distributions of plastic zone and stress shift. Dilatancy effect which has great influences on the damage propagation and displacements in plastic region has little effect on the size of plastic region and stress responses. The conclusions provide a theoretical basis for a reasonable evaluation of stability and effective supporting of weakly consolidated soft rock roadway. 关键词 作者关键词:weakly consolidated soft rock roadway; dilatancy effect; modulus damage coefficient; cave interior pressure; response model 作者信息 通讯作者地址: Wang, WM (通讯作者) Shandong Univ Sci & Technol, Coll Civil Engn, Qingdao 266590, Peoples R China. 地址: [ 1 ] Shandong Univ Sci & Technol, Coll Sci, Qingdao 266590, Peoples R China [ 2 ] Shandong Univ Sci & Technol, Coll Civil Engn, 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 Specialized Research Fund for the Doctoral Program of Higher Education of China 20123718110007 查看基金资助信息 出版商 JOURNAL OF CENTRAL SOUTH UNIV TECHNOLOGY, EDITORIAL OFFICE, CHANGSHA, HUNAN 410083, PEOPLES R CHINA 类别 / 分类 研究方向:Metallurgy & Metallurgical Engineering Web of Science 类别:Metallurgy & Metallurgical Engineering 文献信息 文献类型:Article 语种:English 入藏号: WOS:000331960900045 ISSN: 2095-2899 电子 ISSN: 1993-0666 期刊信息 Impact Factor (影响因子): Journal Citation Reports® 其他信息 IDS 号: AB7HR Web of Science 核心合集中的 "引用的参考文献": 19 Web of Science 核心合集中的 "被引频次": 0 引文网络 0 被引频次 19 引用的参考文献 查看 Related Records 查看引证关系图查看引证关系图 当有人引用此记录时接收电子邮件创建引文跟踪 (数据来自 Web of ScienceTM 核心合集) 全部被引频次计数 0 in All Databases 0 in Web of Science Core Collection 0 in BIOSIS Citation Index 0 in Chinese Science Citation Database 0 in Data Citation Index 0 in SciELO Citation Index 此记录来自: Web of ScienceTM 核心合集 建议修正 如果希望提高此记录中数据的质量，请提供修正建议。 |
3楼2014-03-25 22:46:30
baiyuefei
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4楼2014-03-25 22:46:43