Microseismic characteristics of rockburst development in deep TBM tunnels with alternating soft-hard strata and application to rockburst warning: A case study of the Neelum-Jhelum hydropower project
文献类型：期刊论文
| 作者 | Feng, Guang-Liang2; Chen, Bing-Rui2; Xiao, Ya-Xun2; Jiang, Quan2; Li, Peng-Xiang1; Zheng, Hong2; Zhang, Wei1 |
| 刊名 | TUNNELLING AND UNDERGROUND SPACE TECHNOLOGY
 |
| 出版日期 | 2022-04-01 |
| 卷号 | 122页码:16 |
| 关键词 | Rockburst Microseismicity Mechanism Warning Alternating soft-hard strata Tunnel |
| ISSN号 | 0886-7798 |
| DOI | 10.1016/j.tust.2022.104398 |
| 英文摘要 | The rockbursts that occur when tunneling through deep, hard rock can result in serious harm to workers, mechanical damage, delays, and economic losses. As a result, obtaining a warning of impending rockburst remains a challenge in rock engineering around the world. Unfortunately, the rockbursts that occur in deep tunnels with alternating soft-hard strata have development laws and mechanisms that are unclear and so are particularly difficult to predict. This paper focuses on the characteristics of the microseismicity occurring in deep tunnels constructed within alternating soft-hard strata and using the data to warn of rockburst occurrence. The study uses the Neelum-Jhelum hydropower project in Pakistan (tunnels with a maximum burial depth of 1,890 m) as an engineering background. The temporal evolution of the microseismicity and the fracturing mechanism involved in the rockburst development process in alternating soft-hard strata were thus revealed. Thresholds for six microseismic (MS) parameters that can be used to warn of rockbursts of different intensities in different lithologies were thus found based on 58 recorded cases (recorded during a month-long period of MS monitoring). These thresholds were subsequently used (together with MS monitoring) to warn of rockbursts of a certain intensity in the corresponding lithology during the excavation of subsequent tunnels. The warning results obtained agree with the actual situation when the right thresholds for the corresponding lithologies were used. The characteristic values of the six MS parameters used for rockburst warning in different lithologies were also discussed. Our results provide a useful reference for understanding and warning of rockbursts in deep tunnels in rockmasses with similarly complex lithologies. |
| 资助项目 | National Natural Science Foundation of China[51621006] ; National Natural Science Foundation of China[41972295] |
| WOS研究方向 | Construction & Building Technology ; Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:000764999600002 |
| 出版者 | PERGAMON-ELSEVIER SCIENCE LTD |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/34699]  |
| 专题 | 中科院武汉岩土力学所 |
| 通讯作者 | Feng, Guang-Liang |
| 作者单位 | 1.Northeastern Univ, Key Lab, Minist Educ Safe Min Deep Met Mines, Shenyang 110819, Liaoning, Peoples R China 2.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Wuhan 430071, Peoples R China |
| 推荐引用方式 GB/T 7714 | Feng, Guang-Liang,Chen, Bing-Rui,Xiao, Ya-Xun,et al. Microseismic characteristics of rockburst development in deep TBM tunnels with alternating soft-hard strata and application to rockburst warning: A case study of the Neelum-Jhelum hydropower project[J]. TUNNELLING AND UNDERGROUND SPACE TECHNOLOGY,2022,122:16. |
| APA | Feng, Guang-Liang.,Chen, Bing-Rui.,Xiao, Ya-Xun.,Jiang, Quan.,Li, Peng-Xiang.,...&Zhang, Wei.(2022).Microseismic characteristics of rockburst development in deep TBM tunnels with alternating soft-hard strata and application to rockburst warning: A case study of the Neelum-Jhelum hydropower project.TUNNELLING AND UNDERGROUND SPACE TECHNOLOGY,122,16. |
| MLA | Feng, Guang-Liang,et al."Microseismic characteristics of rockburst development in deep TBM tunnels with alternating soft-hard strata and application to rockburst warning: A case study of the Neelum-Jhelum hydropower project".TUNNELLING AND UNDERGROUND SPACE TECHNOLOGY 122(2022):16. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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