Numerical investigation of geostress influence on the grouting reinforcement effectiveness of tunnel surrounding rock mass in fault fracture zones
文献类型：期刊论文
| 作者 | Xu, Xiangyu1,3; Wu, Zhijun3,4; Weng, Lei3; Chu, Zhaofei3; Liu, Quansheng3,4; Zhou, Yuan2 |
| 刊名 | JOURNAL OF ROCK MECHANICS AND GEOTECHNICAL ENGINEERING
 |
| 出版日期 | 2024 |
| 卷号 | 16期号:1页码:81-101 |
| 关键词 | Numerical manifold method (NMM) Grouting reinforcement Geostress condition Fault fracture zone Tunnel excavation |
| ISSN号 | 1674-7755 |
| DOI | 10.1016/j.jrmge.2023.04.011 |
| 英文摘要 | Grouting is a widely used approach to reinforce broken surrounding rock mass during the construction of underground tunnels in fault fracture zones, and its reinforcement effectiveness is highly affected by geostress. In this study, a numerical manifold method (NMM) based simulator has been developed to examine the impact of geostress conditions on grouting reinforcement during tunnel excavation. To develop this simulator, a detection technique for identifying slurry migration channels and an improved fluid -solid coupling (F -S) framework, which considers the influence of fracture properties and geostress states, is developed and incorporated into a zero -thickness cohesive element (ZE) based NMM (Co-NMM) for simulating tunnel excavation. Additionally, to simulate coagulation of injected slurry, a bonding repair algorithm is further proposed based on the ZE model. To verify the accuracy of the proposed simulator, a series of simulations about slurry migration in single fractures and fracture networks are numerically reproduced, and the results align well with analytical and laboratory test results. Furthermore, these numerical results show that neglecting the influence of geostress condition can lead to a serious overestimation of slurry migration range and reinforcement effectiveness. After validations, a series of simulations about tunnel grouting reinforcement and tunnel excavation in fault fracture zones with varying fracture densities under different geostress conditions are conducted. Based on these simulations, the influence of geostress conditions and the optimization of grouting schemes are discussed. (c) 2024 Institute of Rock and Soil Mechanics, Chinese Academy of Sciences. Production and hosting by Elsevier B.V. This is an open access article under the CC BY -NC -ND license (http://creativecommons.org/ licenses/by-nc-nd/4.0/). |
| 资助项目 | Guangdong Basic and Applied Basic Research Foundation[2021A1515110304] ; Na- tional Natural Science Foundation of China[42077246] ; Na- tional Natural Science Foundation of China[52278412] |
| WOS研究方向 | Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:001234765600001 |
| 出版者 | SCIENCE PRESS |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/41513]  |
| 专题 | 中科院武汉岩土力学所 |
| 通讯作者 | Wu, Zhijun |
| 作者单位 | 1.Wuhan Univ, Shenzhen Res Inst, Shenzhen 518057, Peoples R China 2.Chinese Acad Sci, Inst Rock & Soil Mech, Wuhan 430071, Peoples R China 3.Wuhan Univ, Sch Civil Engn, Key Lab Safety Geotech & Struct Engn Hubei Prov, Wuhan 430072, Peoples R China 4.Wuhan Univ, State Key Lab Water Resources & Hydropower Engn Sc, Wuhan 430072, Peoples R China |
| 推荐引用方式 GB/T 7714 | Xu, Xiangyu,Wu, Zhijun,Weng, Lei,et al. Numerical investigation of geostress influence on the grouting reinforcement effectiveness of tunnel surrounding rock mass in fault fracture zones[J]. JOURNAL OF ROCK MECHANICS AND GEOTECHNICAL ENGINEERING,2024,16(1):81-101. |
| APA | Xu, Xiangyu,Wu, Zhijun,Weng, Lei,Chu, Zhaofei,Liu, Quansheng,&Zhou, Yuan.(2024).Numerical investigation of geostress influence on the grouting reinforcement effectiveness of tunnel surrounding rock mass in fault fracture zones.JOURNAL OF ROCK MECHANICS AND GEOTECHNICAL ENGINEERING,16(1),81-101. |
| MLA | Xu, Xiangyu,et al."Numerical investigation of geostress influence on the grouting reinforcement effectiveness of tunnel surrounding rock mass in fault fracture zones".JOURNAL OF ROCK MECHANICS AND GEOTECHNICAL ENGINEERING 16.1(2024):81-101. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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