Numerical Study of the Effects of Interbedded Layers on Rock Burst in Tunnel Engineering
文献类型：期刊论文
| 作者 | Yang, Jianping3; Yang, Chenming3; Zhao, Wusheng2,3; Zhang, Xi1 |
| 刊名 | INTERNATIONAL JOURNAL OF GEOMECHANICS
 |
| 出版日期 | 2025-03-01 |
| 卷号 | 25期号:3页码:10 |
| 关键词 | Interbeds Interface slippage Rock burst Rock mass stiffness Stress redistribution |
| ISSN号 | 1532-3641 |
| DOI | 10.1061/IJGNAI.GMENG-10537 |
| 英文摘要 | Rock burst is one of the most hazardous problems that is encountered during tunnel excavation. However, less research concerns tunnel excavation in an interbedded layer with alternating strong and soft layers. In this paper, the mechanism of an intense rock burst that occurred in the headrace tunnels of the Neelum-Jhelum (NJ) Hydropower Plant in Pakistan is analyzed based on field investigations. In contrast to a tunnel in homogenous rock, the interbedded layer could create additional factors that trigger or enhance the risk of rock burst. The interface slippage, stress redistribution that is caused by the elastic modulus contrast and ultra deformation of the soft layer are considered three adverse factors that trigger or enhance rock bursts in a layered rock mass. Numerical analyses are carried out on triggering or enhancing rock bursts on the associated abrupt interface slippage and crack propagation that use a boundary element method. For the stress redistribution and transferred elastic strain energy, it is based on a finite-element method (FEM). The numerical results are presented for these three triggering or enhancing mechanisms. The slippage of the layer interfaces could trigger a rock burst and assist in the fracture growth of the flaws between the interface and the tunnel. The enhancement of the stress in the strong layer could generate a stronger stress concentration to cause compressive failure of the tunnel. The soft layer deformation could increase the stress in the strong layer and transfer more energy to the burst elements. Although the three mechanisms are addressed separately, they could come into play at the same time. The results could be helpful in finding a reliable means to reduce rock burst risk in a layered rock mass. |
| 资助项目 | National Natural Science Foundation of China[42277184] ; National Natural Science Foundation of China[42293350] ; National Natural Science Foundation of China[42293355] |
| WOS研究方向 | Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:001395817000001 |
| 出版者 | ASCE-AMER SOC CIVIL ENGINEERS |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/37889]  |
| 专题 | 中科院武汉岩土力学所 |
| 通讯作者 | Yang, Jianping |
| 作者单位 | 1.China Univ Geosci, Sch Engn, Wuhan 430074, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.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 | Yang, Jianping,Yang, Chenming,Zhao, Wusheng,et al. Numerical Study of the Effects of Interbedded Layers on Rock Burst in Tunnel Engineering[J]. INTERNATIONAL JOURNAL OF GEOMECHANICS,2025,25(3):10. |
| APA | Yang, Jianping,Yang, Chenming,Zhao, Wusheng,&Zhang, Xi.(2025).Numerical Study of the Effects of Interbedded Layers on Rock Burst in Tunnel Engineering.INTERNATIONAL JOURNAL OF GEOMECHANICS,25(3),10. |
| MLA | Yang, Jianping,et al."Numerical Study of the Effects of Interbedded Layers on Rock Burst in Tunnel Engineering".INTERNATIONAL JOURNAL OF GEOMECHANICS 25.3(2025):10. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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