Disaster characteristics and mechanisms of the time-delayed rockburst development process in tunnels at 2500 m depth
文献类型：期刊论文
| 作者 | Liu, Guofeng4; Liu, Zhiqiang4; Feng, Guangliang3; Chen, Xueqi4; Duan, Shuqian2; Liu, Chang3; Zhao, Jinshuai1 |
| 刊名 | TUNNELLING AND UNDERGROUND SPACE TECHNOLOGY
 |
| 出版日期 | 2025-05-01 |
| 卷号 | 159页码:15 |
| 关键词 | Time-delayed rockburst Rockburst development process Microseismic monitoring Rock fracture Rockburst mechanism Tunnels |
| ISSN号 | 0886-7798 |
| DOI | 10.1016/j.tust.2025.106474 |
| 英文摘要 | Based on the headrace tunnels of Jinping II hydropower station with a buried depth of up to 2500 m, a database containing 74 cases of time-delayed rockbursts with various intensities was established through investigations and monitoring of a cumulative tunnel section of 30 km. According to the evolution characteristics of microseismic events during the development process of rockburst, the time-delayed rockburst was first classified into two types, including rockburst with and without a "sleep period". The spatiotemporal distribution and development characteristics of rockburst were statistically analyzed, and the mechanism of rock fracture in the development process of rockburst was revealed. The results indicate that geological structures, structural planes, rock mass integrity and support measures all have an impact on the spatial distribution and intensity of timedelayed rockburst. There are differences in the delay time, delay distance and microseismic evolution characteristics between the two types of rockbursts. During the development process of time-delayed rockburst, the type of rock fractures is primarily tensile, with occasional shear and mix type, and their proportions are influenced by the presence of rigid structural planes. Furthermore, some time-delayed rockbursts are often accompanied by at least one immediate rockburst occurrence at the same location or adjacent area, indicating that time-delayed rockbursts tend to occur in regions where energy accumulation is relatively concentrated. This study can provide important guidance value for the mechanism interpretation and early warning of time-delayed rockburst. |
| 资助项目 | National Natural Science Foundation of China[52209120] ; National Natural Science Foundation of China[52422906] ; National Natural Science Foundation of China[52209132] ; Fundamental Research Funds for the Central Universities, CHD[300102213203] |
| WOS研究方向 | Construction & Building Technology ; Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:001427707200001 |
| 出版者 | PERGAMON-ELSEVIER SCIENCE LTD |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/37165]  |
| 专题 | 中科院武汉岩土力学所 |
| 通讯作者 | Feng, Guangliang |
| 作者单位 | 1.Jiangsu Univ, Fac Civil Engn & Mech, Zhenjiang 212013, Jiangsu, Peoples R China 2.Zhengzhou Univ, Sch Civil Engn, Zhengzhou 450001, Peoples R China 3.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Wuhan 430071, Hubei, Peoples R China 4.Changan Univ, Sch Highway, Xian 710064, Shaanxi, Peoples R China |
| 推荐引用方式 GB/T 7714 | Liu, Guofeng,Liu, Zhiqiang,Feng, Guangliang,et al. Disaster characteristics and mechanisms of the time-delayed rockburst development process in tunnels at 2500 m depth[J]. TUNNELLING AND UNDERGROUND SPACE TECHNOLOGY,2025,159:15. |
| APA | Liu, Guofeng.,Liu, Zhiqiang.,Feng, Guangliang.,Chen, Xueqi.,Duan, Shuqian.,...&Zhao, Jinshuai.(2025).Disaster characteristics and mechanisms of the time-delayed rockburst development process in tunnels at 2500 m depth.TUNNELLING AND UNDERGROUND SPACE TECHNOLOGY,159,15. |
| MLA | Liu, Guofeng,et al."Disaster characteristics and mechanisms of the time-delayed rockburst development process in tunnels at 2500 m depth".TUNNELLING AND UNDERGROUND SPACE TECHNOLOGY 159(2025):15. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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