Grouting diffusion characteristics in rough sandstone fracture with flowing water: Insights from NMR experimental investigation
文献类型：期刊论文
| 作者 | Liu, Yang3; Wu, Zhijun2,3; Weng, Lei3; Wu, Longji3; Zhou, Yuan1; Liu, Quansheng3 |
| 刊名 | TUNNELLING AND UNDERGROUND SPACE TECHNOLOGY
 |
| 出版日期 | 2025-03-01 |
| 卷号 | 157页码:22 |
| 关键词 | Rough fracture Grouting Flowing water NMR Diffusion Characteristics |
| ISSN号 | 0886-7798 |
| DOI | 10.1016/j.tust.2025.106372 |
| 英文摘要 | Observation of dynamic water grouting diffusion characteristics presents formidable challenges owing to the concealed and intricate nature of rock formations in underground engineering. Therefore, investigating the grouting diffusion characteristics in rough fracture with flowing water is crucial for preventing water inrush and reinforcing fractured rock masses. This study conducted a series of dynamic water grouting tests encompassing varying grouting parameters, and the grouting diffusion processes were monitored utilizing the nuclear magnetic resonance (NMR) technique. The initial setting time and hydration process of ultrafine cement-sodium silicate (UC-S) grout was first investigated. The effects of water flow rate, grout flow rate, fracture aperture, and fracture roughness on the grouting diffusion process and effectiveness were comprehensively investigated. Then, the effects of varying grouting parameters on the dynamic water grouting effectiveness were evaluated using the global sensitivity analysis method. The results indicated that the fracture roughness notably affects the grouting effectiveness, with a more pronounced effect evident when water flow rate exceeds grout flow rate. In scenarios where water flow rate exceeds grout flow rate, the increase of fracture roughness can extend the total effective grouting time and simultaneously enhance grout diffusion distance under counter-current conditions. Notably, favorable grouting effectiveness can be achieved when the Joint Roughness Coefficient (JRC) exceeds 6. The grout flow rate and water flow rate are the main influential factors on grouting effectiveness, followed by fracture roughness and fracture aperture. The findings of this study can provide valuable reference and guidance for the grouting parameter selection in grouting engineering applications. |
| 资助项目 | National Natural Science Foundation of China[42077246] ; National Natural Science Foundation of China[52278412] ; National Natural Science Foundation of China[U22A20234] ; National Natural Science Foundation of China[41941018] ; National Natural Science Foundation of China[U21A20153] ; Innovation Group Project of Hubei Pro-vincial Natural Science Foundation[2023AFA003] |
| WOS研究方向 | Construction & Building Technology ; Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:001411165900001 |
| 出版者 | PERGAMON-ELSEVIER SCIENCE LTD |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/37588]  |
| 专题 | 中科院武汉岩土力学所 |
| 通讯作者 | Wu, Zhijun |
| 作者单位 | 1.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Wuhan 430071, Peoples R China 2.Wuhan Univ, State Key Lab Water Resources Hydropower Engn Sci, Wuhan 430072, Peoples R China 3.Wuhan Univ, Sch Civil Engn, Wuhan 430072, Peoples R China |
| 推荐引用方式 GB/T 7714 | Liu, Yang,Wu, Zhijun,Weng, Lei,et al. Grouting diffusion characteristics in rough sandstone fracture with flowing water: Insights from NMR experimental investigation[J]. TUNNELLING AND UNDERGROUND SPACE TECHNOLOGY,2025,157:22. |
| APA | Liu, Yang,Wu, Zhijun,Weng, Lei,Wu, Longji,Zhou, Yuan,&Liu, Quansheng.(2025).Grouting diffusion characteristics in rough sandstone fracture with flowing water: Insights from NMR experimental investigation.TUNNELLING AND UNDERGROUND SPACE TECHNOLOGY,157,22. |
| MLA | Liu, Yang,et al."Grouting diffusion characteristics in rough sandstone fracture with flowing water: Insights from NMR experimental investigation".TUNNELLING AND UNDERGROUND SPACE TECHNOLOGY 157(2025):22. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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