Sectional velocity model for microseismic source location in tunnels
文献类型：期刊论文
| 作者 | Xiao, Ya-Xun; Feng, Guang-Liang; Feng, Xia-Ting ; Chen, Bing-Rui; Jiang, Quan
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| 刊名 | TUNNELLING AND UNDERGROUND SPACE TECHNOLOGY
 |
| 出版日期 | 2015 |
| 卷号 | 45页码:73-83 |
| 关键词 | Rock mechanics Tunnel Velocity model Microseismic source location Jinping II hydropower station |
| ISSN号 | 0886-7798 |
| DOI | 10.1016/j.tust.2014.09.007 |
| 英文摘要 | Microseismic (MS) source location is the foundation of MS monitoring and warning. The accuracy of MS source location depends on the accuracy of the velocities used in the location algorithm. In this work, a suitable sectional velocity model for MS source location in tunnels is proposed. In the model, the velocities from the MS source to the MS sensors in any one group are almost the same but those to different groups of MS sensors may be different. An efficient global optimization algorithm (particle swarm optimization) is applied to search for the MS source location and sectional velocity. Results from a tunnel simulation show that the velocities obtained using the sectional velocity model are close to the actual ones and location accuracy is greatly improved. The average location error is reduced by 78.3% (from 13.05 to 2.83 m). The proposed model was applied to MS source location in the deeply-buried tunnels of the Jinping II hydropower station in China. The case shows that the sectional velocities obtained are in accordance with the geological conditions. The locations of rockburst and MS events in the rockburst development process are clustered in the actual rockburst area. The method is good for rockburst monitoring and warning in the tunnels. In addition, the impact of error in the velocity on MS source location accuracy in tunnels is discussed. In tunnels, error in velocity is found to have a great impact on MS source location accuracy. (C) 2014 Elsevier Ltd. All rights reserved. |
| WOS研究方向 | Construction & Building Technology ; Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:000347022600008 |
| 出版者 | PERGAMON-ELSEVIER SCIENCE LTD |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/3664]  |
| 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 | Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn |
| 推荐引用方式 GB/T 7714 | Xiao, Ya-Xun,Feng, Guang-Liang,Feng, Xia-Ting,et al. Sectional velocity model for microseismic source location in tunnels[J]. TUNNELLING AND UNDERGROUND SPACE TECHNOLOGY,2015,45:73-83. |
| APA | Xiao, Ya-Xun,Feng, Guang-Liang,Feng, Xia-Ting,Chen, Bing-Rui,&Jiang, Quan.(2015).Sectional velocity model for microseismic source location in tunnels.TUNNELLING AND UNDERGROUND SPACE TECHNOLOGY,45,73-83. |
| MLA | Xiao, Ya-Xun,et al."Sectional velocity model for microseismic source location in tunnels".TUNNELLING AND UNDERGROUND SPACE TECHNOLOGY 45(2015):73-83. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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