Investigation of nonlinear flow in discrete fracture networks during shear based on XFEM method
文献类型：期刊论文
| 作者 | Sui, Qun1; Chen, Weizhong2; Zhou, Yun2,3 |
| 刊名 | COMPUTERS AND GEOTECHNICS
 |
| 出版日期 | 2024-12-01 |
| 卷号 | 176页码:13 |
| 关键词 | Fractured rock mass Nonlinear flow Lateral pressure coefficient Shear stiffness Extended finite element method Numerical simulation |
| ISSN号 | 0266-352X |
| DOI | 10.1016/j.compgeo.2024.106744 |
| 英文摘要 | To characterize fractured rock masses, self-developed programs are utilized to generate fracture networks. A nonlinear flow model considering the shear dilatancy effect is established, and a numerical solution method for modelling nonlinear flow in fractured rock masses during shear is proposed on the basis of extended finite element analysis. The contour plots reveal distinct patterns in the water pressure and flow distributions within fractures. The reduction in the lateral pressure coefficient and increase in the shear stiffness of the joints facilitate a more homogeneous distribution of the water pressure gradient. Under the same vertical stress, increasing the lateral pressure coefficient or decreasing the shear stiffness leads to a more pronounced shear dilatancy effect on fractures. Consequently, an increase in fracture aperture and permeability occurs, and the flow of the fractured rock mass is enhanced. With the same vertical stress, an increase in horizontal stress and a decrease in shear stiffness lead to a gradual reduction in the linear and nonlinear coefficients of Forchheimer's law. Specifically, the influence of the lateral pressure coefficient on the linear coefficient is greater than that on the nonlinear coefficient. |
| 资助项目 | National Natural Science Foundation of China[51991392] ; National Natural Science Foundation of China[12202463] |
| WOS研究方向 | Computer Science ; Engineering ; Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:001315619700001 |
| 出版者 | ELSEVIER SCI LTD |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/42639]  |
| 专题 | 中科院武汉岩土力学所 |
| 通讯作者 | Zhou, Yun |
| 作者单位 | 1.Ningbo Univ Technol, Sch Civil & Transportat Engn, Ningbo 315211, Zhejiang, Peoples R China 2.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Wuhan 430071, Hubei, Peoples R China 3.Northeast Petr Univ, Sch Earth Sci, Daqing 163318, Heilongjiang, Peoples R China |
| 推荐引用方式 GB/T 7714 | Sui, Qun,Chen, Weizhong,Zhou, Yun. Investigation of nonlinear flow in discrete fracture networks during shear based on XFEM method[J]. COMPUTERS AND GEOTECHNICS,2024,176:13. |
| APA | Sui, Qun,Chen, Weizhong,&Zhou, Yun.(2024).Investigation of nonlinear flow in discrete fracture networks during shear based on XFEM method.COMPUTERS AND GEOTECHNICS,176,13. |
| MLA | Sui, Qun,et al."Investigation of nonlinear flow in discrete fracture networks during shear based on XFEM method".COMPUTERS AND GEOTECHNICS 176(2024):13. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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