Influence of Shear Displacement on Fluid Flow and Solute Transport in a 3D Rough Fracture
Influence of Shear Displacement on Fluid Flow and Solute Transport in a 3D Rough Fracture
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剪切位移对 3D 粗糙裂缝中流体流动和溶质运移的影响
DOI：
10.2113/2021/1569736
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发表时间：
2021-11
期刊：
影响因子：
2.4
通讯作者：
Zhou Zhifang
中科院分区：
文献类型：
--
作者：
Dou Zhi;Tang Songxuan;Zhang Xueyi;Liu Richeng;Zhuang Chao;Wang Jinguo;Zhou Zhifang
Fractured rocks in the subsurface are ubiquitous, and the dynamics of mass transfer in fractured rocks plays an important role in understanding the problem in engineering geology and environmental geology. In this study, the influence of shear displacement on fluid flow and solute transport in a 3D rough fracture was investigated. A 3D self-affine rough fracture was generated using the modified successive random addition (SRA) technology, and three sheared fractures with different shear displacements were constructed based on the mechanistic model. A direct numerical model based on the Navier-Stokes equation and the advection-diffusion equation was developed to solve the fluid flow and the solute transport. The results showed that shear displacement had a significant influence not only on the fluid flow but also on the solute transport. A global measure of the spatial variability of the flow velocity showed that the heterogeneity became weaker with decreasing shear displacement. All measured BTCs deviated from the Gaussian profile and exhibited the typical anomalous behaviors, such as the long tail and the early arrival. Although the best-fitted results of the advection-dispersion equation (ADE) model and mobile-immobile model (MIM) were generally consistent with those of the BTCs, the MIM was more capable than the ADE model for characterizing the shear-induced anomalous behavior of the BTCs. It was found that the mass exchange process between the immobile and mobile domains was enhanced in the sheared fractures while the fraction of the advection-dominant mobile domain decreased as the shear displacement increased. Furthermore, the deviation of the Taylor dispersion coefficient from the fitted dispersion coefficient by the ADE model and MIM in the sheared fractures was confirmed due to the influence of shear displacement.
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DOI：
10.1029/2020jb020028
发表时间：
2020-08
期刊：
Journal of Geophysical Research: Solid Earth
影响因子：
--
作者：
Lichun Wang;M. Cardenas;Jia‐Qing Zhou;R. Ketcham
通讯作者：
Lichun Wang;M. Cardenas;Jia‐Qing Zhou;R. Ketcham
影响因子：
5.4
作者：
B. Berkowitz;A. Cortis;I. Dror;H. Scher
通讯作者：
B. Berkowitz;A. Cortis;I. Dror;H. Scher
影响因子：
3.6
作者：
Yonghui Wu;Linsong Cheng;Sidong Fang;J. Killough;Shijun Huang;P. Jia
通讯作者：
Yonghui Wu;Linsong Cheng;Sidong Fang;J. Killough;Shijun Huang;P. Jia
DOI：
10.1103/physreve.92.022148
发表时间：
2015-08
期刊：
Physical review. E, Statistical, nonlinear, and soft matter physics
影响因子：
--
作者：
P. Kang;M. Dentz;T. Le Borgne;R. Juanes
通讯作者：
P. Kang;M. Dentz;T. Le Borgne;R. Juanes
DOI：
10.1016/j.ijrmms.2017.10.016
发表时间：
2017-12
影响因子：
7.2
作者：
D. Crandall;Johnathan E. Moore;Magdalena Gill;Matthew Stadelman
通讯作者：
D. Crandall;Johnathan E. Moore;Magdalena Gill;Matthew Stadelman