Numerical Simulation of Shear Behavior and Permeability Evolution of Rock Joints with Variable Roughness and Infilling Thickness
Joint Authors
Cheng, Jingyi
Wan, Zhijun
Zhang, Hongwei
Source
Issue
Vol. 2018, Issue 2018 (31 Dec. 2018), pp.1-11, 11 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2018-12-13
Country of Publication
Egypt
No. of Pages
11
Main Subjects
Abstract EN
The mechanical properties and permeability evolution of sand-infilled rock joints during the shear process is an important issue in rock engineering, such as it pertains to hydraulic fractures filled with proppant.
Shear can disrupt the preexisting hydraulic and mechanical equilibrium conditions, thus affecting fluid flow.
In this study, we simulate the shear behavior of rock joints with variable roughness and sand infilling thickness using the discrete element code PFC2D.
Rock joint roughness is evaluated by the joint roughness coefficient (JRC), and sand infilling thickness is evaluated by a thickness ratio (i.e., ratio of infill thickness to rock height) ranging from 0.02 to 0.20.
The results show that peak shear strength decreases with the thickness ratio in a relation that can be expressed by a hyperbolic function.
We also measure the permeability evolution during shearing and find that the permeability of infilled rock joints increases with both the thickness ratio and JRC.
American Psychological Association (APA)
Cheng, Jingyi& Zhang, Hongwei& Wan, Zhijun. 2018. Numerical Simulation of Shear Behavior and Permeability Evolution of Rock Joints with Variable Roughness and Infilling Thickness. Geofluids،Vol. 2018, no. 2018, pp.1-11.
https://search.emarefa.net/detail/BIM-1157241
Modern Language Association (MLA)
Cheng, Jingyi…[et al.]. Numerical Simulation of Shear Behavior and Permeability Evolution of Rock Joints with Variable Roughness and Infilling Thickness. Geofluids No. 2018 (2018), pp.1-11.
https://search.emarefa.net/detail/BIM-1157241
American Medical Association (AMA)
Cheng, Jingyi& Zhang, Hongwei& Wan, Zhijun. Numerical Simulation of Shear Behavior and Permeability Evolution of Rock Joints with Variable Roughness and Infilling Thickness. Geofluids. 2018. Vol. 2018, no. 2018, pp.1-11.
https://search.emarefa.net/detail/BIM-1157241
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1157241