Estimation of rockburst wall-rock velocity invoked by slab flexure sources in deep tunnels
文献类型：期刊论文
| 作者 | Zhang, Chuanqing2; Qiu, Shili2; Feng, Xiating2 ; Xiang, Tianbing1
|
| 刊名 | CANADIAN GEOTECHNICAL JOURNAL
 |
| 出版日期 | 2014 |
| 卷号 | 51期号:5页码:520-539 |
| ISSN号 | 0008-3674 |
| 关键词 | rockburst slab buckling wall-rock velocity rockburst source mechanism |
| DOI | 10.1139/cgj-2013-0337 |
| 英文摘要 | For rock support in burst-prone ground, the wall-rock velocity adjacent to the surface of underground openings is a vital support design parameter, and depends on the seismic source mechanism inducing rockburst damage. In this study, to estimate the wall-rock velocity evoked only by rock slab buckling (an important rockburst source mechanism), a comprehensive velocity assessment method is proposed, using an excellent slab column buckling model with a small eccentricity, which relies on a novel compressive or tensile buckling failure criterion of rock slab. The true-triaxial loading-unloading tests and rockburst case analyses reveal that rock mass slabbing induced by high rock stress has major impacts on the evolution and formation of buckling rockburst in deep tunnels. Using a method based on the energy balance principle, the slabbing thickness of intact rock mass is also calculated by an analytical method, which indicates that the slabbing thickness parameter has a nonlinear relation to the following six parameters: uniaxial tensile strength (UTS), uniaxial compressive strength (UCS), normal stress (sigma(n)), length of joint (L), friction angle (phi(r)), and joint roughness coefficient (JRC). These proposed models and methods have been quite successfully applied to rockburst and slabbing cases occurring in deep tunnels. These applications show that slab flexure is an important source mechanism invoking high wall-rock velocities and leading to severe rockburst damages in the area surrounding deep tunnels. |
| WOS研究方向 | Engineering ; Geology |
| 语种 | 英语 |
| 出版者 | CANADIAN SCIENCE PUBLISHING, NRC RESEARCH PRESS |
| WOS记录号 | WOS:000335823100005 |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/3594]  |
| 专题 | 岩土力学所知识全产出_期刊论文 岩土力学所知识全产出 国家重点实验室知识产出_期刊论文 |
| 作者单位 | 1.HydroChina Kunming Engn Corp 2.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn ; |
| 推荐引用方式 GB/T 7714 | Zhang, Chuanqing,Qiu, Shili,Feng, Xiating,et al. Estimation of rockburst wall-rock velocity invoked by slab flexure sources in deep tunnels[J]. CANADIAN GEOTECHNICAL JOURNAL,2014,51(5):520-539. |
| APA | Zhang, Chuanqing,Qiu, Shili,Feng, Xiating,&Xiang, Tianbing.(2014).Estimation of rockburst wall-rock velocity invoked by slab flexure sources in deep tunnels.CANADIAN GEOTECHNICAL JOURNAL,51(5),520-539. |
| MLA | Zhang, Chuanqing,et al."Estimation of rockburst wall-rock velocity invoked by slab flexure sources in deep tunnels".CANADIAN GEOTECHNICAL JOURNAL 51.5(2014):520-539. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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