Grouting diffusion mechanism in an oblique crack in rock masses considering temporal and spatial variation of viscosity of fast-curing grouts
文献类型：期刊论文
| 作者 | Huang, Shuling3; Pei, Qitao2,3; Ding, Xiuli3; Zhang, Yuting3; Liu, Dengxue3; He, Jun3; Bian, Kang1 |
| 刊名 | GEOMECHANICS AND ENGINEERING
 |
| 出版日期 | 2020-10-25 |
| 卷号 | 23期号:2页码:151-163 |
| ISSN号 | 2005-307X |
| 关键词 | fast-curing grout oblique crack grouting multi-field coupling diffusion mechanism |
| DOI | 10.12989/gae.2020.23.2.151 |
| 英文摘要 | Grouting method is an effective way of reinforcing cracked rock masses and plugging water gushing. Current grouting diffusion models are generally developed for horizontal cracks, which is contradictory to the fact that the crack generally occurs in rock masses with irregular spatial distribution characteristics in real underground environments. To solve this problem, this study selected a cement-sodium silicate slurry (C-S slurry) generally used in engineering as a fast-curing grouting material and regarded the C-S slurry as a Bingham fluid with time-varying viscosity for analysis. Based on the theory of fluid mechanics, and by simultaneously considering the deadweight of slurry and characteristics of non-uniform spatial distribution of viscosity of fast-curing grouts, a theoretical model of slurry diffusion in an oblique crack in rock masses at constant grouting rate was established. Moreover, the viscosity and pressure distribution equations in the slurry diffusion zone were deduced, thus quantifying the relationship between grouting pressure, grouting time, and slurry diffusion distance. On this basis, by using a 3-d finite element program in multi-field coupled software Comsol, the numerical simulation results were compared with theoretical calculation values, further verifying the effectiveness of the theoretical model. In addition, through the analysis of two engineering case studies, the theoretical calculations and measured slurry diffusion radius were compared, to evaluate the application effects of the model in engineering practice. Finally, by using the established theoretical model, the influence of cracking in rock masses on the diffusion characteristics of slurry was analysed. The results demonstrate that the inclination angle of the crack in rock masses and azimuth angle of slurry diffusion affect slurry diffusion characteristics. More attention should be paid to the actual grouting process. The results can provide references for determining grouting parameters of fast-curing grouts in engineering practice. |
| 资助项目 | National Science Foundation of China[51539002] ; National Science Foundation of China[51979008] ; National Science Foundation of China[51779018] ; National Science Foundation of China[51809014] ; Basic Research Fund for Central Research Institutes of Public Causes[CKSF2019434/YT] ; Basic Research Fund for Central Research Institutes of Public Causes[CKSF2019169/YT] |
| WOS研究方向 | Engineering |
| 语种 | 英语 |
| 出版者 | TECHNO-PRESS |
| WOS记录号 | WOS:000581128800006 |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/24939]  |
| 专题 | 中科院武汉岩土力学所 |
| 通讯作者 | Pei, Qitao |
| 作者单位 | 1.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Wuhan 430071, Hubei, Peoples R China 2.Wuhan Municipal Engn Design & Res Inst Co Ltd, Wuhan 430023, Peoples R China 3.Changjiang River Sci Res Inst, Key Lab Geotech Mech & Engn Minist Water Resource, Wuhan 430010, Hubei, Peoples R China |
| 推荐引用方式 GB/T 7714 | Huang, Shuling,Pei, Qitao,Ding, Xiuli,et al. Grouting diffusion mechanism in an oblique crack in rock masses considering temporal and spatial variation of viscosity of fast-curing grouts[J]. GEOMECHANICS AND ENGINEERING,2020,23(2):151-163. |
| APA | Huang, Shuling.,Pei, Qitao.,Ding, Xiuli.,Zhang, Yuting.,Liu, Dengxue.,...&Bian, Kang.(2020).Grouting diffusion mechanism in an oblique crack in rock masses considering temporal and spatial variation of viscosity of fast-curing grouts.GEOMECHANICS AND ENGINEERING,23(2),151-163. |
| MLA | Huang, Shuling,et al."Grouting diffusion mechanism in an oblique crack in rock masses considering temporal and spatial variation of viscosity of fast-curing grouts".GEOMECHANICS AND ENGINEERING 23.2(2020):151-163. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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