Displacement measurement techniques and numerical verification in 3D geomechanical model tests of an underground cavern group
文献类型：期刊论文
| 作者 | Zhang, Q. B.1,2; He, L.1; Zhu, W. S.3 |
| 刊名 | TUNNELLING AND UNDERGROUND SPACE TECHNOLOGY
 |
| 出版日期 | 2016 |
| 卷号 | 56页码:54-64 |
| 关键词 | Underground cavern group Geomechanical model test Displacement measurement Numerical simulation Discontinuous deformation analysis (DDA) |
| ISSN号 | 0886-7798 |
| DOI | 10.1016/j.tust.2016.01.029 |
| 英文摘要 | In this paper, the stability of an underground cavern group is investigated on the basis of large-scale 3D geomechanical model tests and numerical simulations. Multiple measurement techniques are developed to measure the convergence of deformation in the cavern, displacements at key points in the side walls and the damage pattern during the excavation simulation process. The digital photogrammetric technique and fiber Bragg grating (FBG) based displacement sensing bars are applied to measure displacements in the surrounding rock masses. Mini multi-point extensometers with high-precision grating scales are developed as transducers for displacement monitoring. Afterward, a nodal-based Discontinuous Deformation Analysis (NDDA) method is applied to simulate the whole process of the physical model tests and to compare with experimental results. The variation process and law curves of the displacements in the surrounding rock and at key points in the side walls are obtained at excavation stages. The study shows that the application of the displacement measurement methods used in the surrounding rock masses for large-scale model tests of cavern group under true 3-D stress state have achieved satisfactory results. (C) 2016 Published by Elsevier Ltd. |
| WOS研究方向 | Construction & Building Technology ; Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:000375815200006 |
| 出版者 | PERGAMON-ELSEVIER SCIENCE LTD |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/3877]  |
| 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.Monash Univ, Dept Civil Engn, Clayton, Vic 3800, Australia; 2.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn ; 3.Shandong Univ, Geotech & Struct Engn Res Ctr |
| 推荐引用方式 GB/T 7714 | Zhang, Q. B.,He, L.,Zhu, W. S.. Displacement measurement techniques and numerical verification in 3D geomechanical model tests of an underground cavern group[J]. TUNNELLING AND UNDERGROUND SPACE TECHNOLOGY,2016,56:54-64. |
| APA | Zhang, Q. B.,He, L.,&Zhu, W. S..(2016).Displacement measurement techniques and numerical verification in 3D geomechanical model tests of an underground cavern group.TUNNELLING AND UNDERGROUND SPACE TECHNOLOGY,56,54-64. |
| MLA | Zhang, Q. B.,et al."Displacement measurement techniques and numerical verification in 3D geomechanical model tests of an underground cavern group".TUNNELLING AND UNDERGROUND SPACE TECHNOLOGY 56(2016):54-64. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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