An enhanced equivalent continuum model for layered rock mass incorporating bedding structure and stress dependence
文献类型：期刊论文
| 作者 | Fan, Qi-Xiang3; Zhou, Yang-Yi2; Feng, Xia-Ting2 ; Xu, Ding-Ping1
|
| 刊名 | INTERNATIONAL JOURNAL OF ROCK MECHANICS AND MINING SCIENCES
 |
| 出版日期 | 2017 |
| 卷号 | 97页码:75-98 |
| 关键词 | Layered rock mass Bedding plane Stress dependence Smeared crack Layer thickness Anisotropy |
| ISSN号 | 1365-1609 |
| DOI | 10.1016/j.ijrmms.2017.06.006 |
| 英文摘要 | Layered rock masses exhibit significant anisotropy in both the deformability and strength. Properties of this rock mass are largely affected by its bedding structure and also by the stress state change. For the purpose of characterizing these salient features using the equivalent continuum concept, an enhanced model is proposed in this paper based on the ubiquitous-joint model. In the enhanced model, the intact bedded rock is assumed to behave as a transversely isotropic elastic body. A modified anisotropic strength criterion is adopted to describe the direction dependence of the strength of intact bedded rock. In addition, stress-sensitive parameters are utilized for both the intact rock and bedding plane, among which the dilation angle and strength parameters of intact rock are influenced by confining pressure and loading history, whereas the stiffnesses of bedding planes are closely related to the current normal stress. The effect of layer thickness on the mechanical behavior of rock mass is reflected by continuously updating the global stiffness matrix after failure of bedding plane, and by conditions for conducting bedding plane related calculations determined by the relative scales between element size and layer thickness. Preliminary validation of this model is conducted by comparing with the closed-form solutions and with laboratory tests. Generally good agreements can be achieved between numerical simulations and theoretical/experimental results, which indicate that applicability of the enhanced model on underground engineering issues related to layered rock mass is promising. |
| WOS研究方向 | Engineering ; Mining & Mineral Processing |
| 语种 | 英语 |
| WOS记录号 | WOS:000407406800008 |
| 出版者 | PERGAMON-ELSEVIER SCIENCE LTD |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/4122]  |
| 专题 | 岩土力学所知识全产出_期刊论文 国家重点实验室知识产出_期刊论文 |
| 作者单位 | 1.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn ; 2.Northeastern Univ, Minist Educ Safe Min Deep Met Mines, Key Lab ; 3.China Three Gorges Corp |
| 推荐引用方式 GB/T 7714 | Fan, Qi-Xiang,Zhou, Yang-Yi,Feng, Xia-Ting,et al. An enhanced equivalent continuum model for layered rock mass incorporating bedding structure and stress dependence[J]. INTERNATIONAL JOURNAL OF ROCK MECHANICS AND MINING SCIENCES,2017,97:75-98. |
| APA | Fan, Qi-Xiang,Zhou, Yang-Yi,Feng, Xia-Ting,&Xu, Ding-Ping.(2017).An enhanced equivalent continuum model for layered rock mass incorporating bedding structure and stress dependence.INTERNATIONAL JOURNAL OF ROCK MECHANICS AND MINING SCIENCES,97,75-98. |
| MLA | Fan, Qi-Xiang,et al."An enhanced equivalent continuum model for layered rock mass incorporating bedding structure and stress dependence".INTERNATIONAL JOURNAL OF ROCK MECHANICS AND MINING SCIENCES 97(2017):75-98. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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