Study of hydro-mechanical behaviours of rough rock fracture with shear dilatancy and asperities using shear-flow fl ow model
文献类型：期刊论文
| 作者 | Wang, Luyu2; Chen, Weizhong1; Sui, Qun1,3 |
| 刊名 | JOURNAL OF ROCK MECHANICS AND GEOTECHNICAL ENGINEERING
 |
| 出版日期 | 2024-10-01 |
| 卷号 | 16期号:10页码:4004-4016 |
| 关键词 | Rock fracture Stress-seepage coupling Shear-flow model Fracture asperity Shear dilatancy |
| ISSN号 | 1674-7755 |
| DOI | 10.1016/j.jrmge.2023.11.020 |
| 英文摘要 | The geometric properties of fracture surfaces significantly influence shear-seepage in rock fractures, introducing complexities to fracture modelling. The present study focuses on the hydro-mechanical behaviours of rough rock fractures during shear-seepage processes to reveal how dilatancy and fracture asperities affect these phenomena. To achieve this, an improved shear-flow model (SFM) is proposed with the incorporation of dilatancy effect and asperities. In particular, shear dilatancy is accounted for in both the elastic and plastic stages, in contrast to some existing models that only consider it in the elastic stage. Depending on the computation approaches for the peak dilatancy angle, three different versions of the SFM are derived based on Mohr-Coulomb, joint roughness coefficient-joint compressive strength (JRC-JCS), and Grasselli's theories. Notably, this is a new attempt that utilizes Grasselli's model in shear- seepage analysis. An advanced parameter optimization method is introduced to accurately determine model parameters, addressing the issue of local optima inherent in some conventional methods. Then, model performance is evaluated against existing experimental results. The findings demonstrate that the SFM effectively reproduces the shear-seepage characteristics of rock fracture across a wide range of stress levels. Further sensitivity analysis reveals how dilatancy and asperity affect hydraulic properties. The relation between hydro-mechanical properties (dilatancy displacement and hydraulic conductivity) and asperity parameters is analysed. Several profound understandings of the shear-seepage process are obtained by exploring the phenomenon under various conditions. (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 | National Natural Science Foundation of China[51991392] ; National Natural Science Foundation of China[42293355] |
| WOS研究方向 | Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:001338835400001 |
| 出版者 | SCIENCE PRESS |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/42931]  |
| 专题 | 中科院武汉岩土力学所 |
| 通讯作者 | Chen, Weizhong |
| 作者单位 | 1.Chinese Acad Sci, Inst Rock & Soil Mech, Wuhan 430071, Peoples R China 2.Hong Kong Polytech Univ, Dept Civil & Environm Engn, Hung Hom, Kowloon, Hong Kong, Peoples R China 3.Changjiang Design Grp Co Ltd, Wuhan 430010, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang, Luyu,Chen, Weizhong,Sui, Qun. Study of hydro-mechanical behaviours of rough rock fracture with shear dilatancy and asperities using shear-flow fl ow model[J]. JOURNAL OF ROCK MECHANICS AND GEOTECHNICAL ENGINEERING,2024,16(10):4004-4016. |
| APA | Wang, Luyu,Chen, Weizhong,&Sui, Qun.(2024).Study of hydro-mechanical behaviours of rough rock fracture with shear dilatancy and asperities using shear-flow fl ow model.JOURNAL OF ROCK MECHANICS AND GEOTECHNICAL ENGINEERING,16(10),4004-4016. |
| MLA | Wang, Luyu,et al."Study of hydro-mechanical behaviours of rough rock fracture with shear dilatancy and asperities using shear-flow fl ow model".JOURNAL OF ROCK MECHANICS AND GEOTECHNICAL ENGINEERING 16.10(2024):4004-4016. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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