Investigations of the sequential excavation and reinforcement of an underground cavern complex using the discontinuous deformation analysis method
文献类型：期刊论文
| 作者 | Fu, Xiaodong; Sheng, Qian; Zhang, Yonghui; Chen, Jian |
| 刊名 | TUNNELLING AND UNDERGROUND SPACE TECHNOLOGY
 |
| 出版日期 | 2015 |
| 卷号 | 50页码:79-93 |
| 关键词 | Discontinuous deformation analysis (DDA) Underground cavern complex Sequential excavation Rock bolt reinforcement Block birth and death Dull-reactivating method |
| ISSN号 | 0886-7798 |
| DOI | 10.1016/j.tust.2015.06.010 |
| 英文摘要 | Two modifications are made to enable the use of the discontinuous deformation analysis (DDA) method to investigate the sequential construction of an underground cavern complex. One modification is the "block birth and death" approach. With the aid of a boundary block searching algorithm, this approach excavates the blocks in any closed domain step by step and is verified by a DDA example. The other modification is an updating algorithm of the rock bolt called the dull-reactivating method. In this new algorithm, the coordinates of the ending endpoints of the dull rock bolts are regularly updated and the corresponding rock bolts in the sequential reinforcement region are reactivated. The initial geostress field and the sequential construction of the underground cavern complex of the Dagangshan hydropower station in Southwest China are simulated with the modified DDA method. Valuable results are obtained by analysing the displacement, stress and rock bolt force. In the construction processes, the blocks around each cavern form a bearing capacity system to prevent the block deformation, and the rock bolts jointly support the stress release as a system. At the sidewalls of the main machine building and the downstream side wall of the tail surge chamber, the blocks cut by joints with a high dip angle suffer a strong stress release, and the tension forces of the several rock bolts are so large that they should be noticed, which provides a basis for the construction guidance of the project. (C) 2015 Elsevier Ltd. All rights reserved. |
| WOS研究方向 | Construction & Building Technology ; Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:000365366200009 |
| 出版者 | PERGAMON-ELSEVIER SCIENCE LTD |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/3746]  |
| 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 | Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn |
| 推荐引用方式 GB/T 7714 | Fu, Xiaodong,Sheng, Qian,Zhang, Yonghui,et al. Investigations of the sequential excavation and reinforcement of an underground cavern complex using the discontinuous deformation analysis method[J]. TUNNELLING AND UNDERGROUND SPACE TECHNOLOGY,2015,50:79-93. |
| APA | Fu, Xiaodong,Sheng, Qian,Zhang, Yonghui,&Chen, Jian.(2015).Investigations of the sequential excavation and reinforcement of an underground cavern complex using the discontinuous deformation analysis method.TUNNELLING AND UNDERGROUND SPACE TECHNOLOGY,50,79-93. |
| MLA | Fu, Xiaodong,et al."Investigations of the sequential excavation and reinforcement of an underground cavern complex using the discontinuous deformation analysis method".TUNNELLING AND UNDERGROUND SPACE TECHNOLOGY 50(2015):79-93. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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