Simulation of Rock Hydraulics in Rock Joint by Using Discrete Element Method
Journal
Sustainable Civil Infrastructures
Start Page
177
End Page
183
ISSN
23663405
ISBN (of the container)
9783030796433
Date Issued
2021
Author(s)
Chiu, C.C.
Abstract
This study proposed a method to calculate rock hydraulics in rock joint by merging the Lattice method and the particulate interface model in the particulate discrete element method. The Lattice method builds a Voronoi-cell structure based on particles’ contact, which can be used to calculate fluid transmission between cells; the particulate interface model can modify the results of rock joint simulation in the discrete element method. By combining the above two methods, correct mechanical behavior can be obtained by the particulate interface model, and the fluid transmission in the rock joint can be calculated by using the Lattice model. The theory of the Lattice model and the particulate interface model is first introduced. To validate the correctness of the proposed model, the simulated water head and the variation of flow rate in a single fracture under un-shear and shear conditions are validated by the analytical solution. Finally, a re-meshing technique to handle the variation of pore mesh has been proposed to support the operation of the modified fluid flow algorithm during shearing. © 2021, The Author(s), under exclusive license to Springer Nature Switzerland AG.
Event(s)
6th GeoChina International Conference on Civil and Transportation Infrastructures: From Engineering to Smart and Green Life Cycle Solutions, GeoChina 2021
Subjects
Discrete element method
Fluid transmission
Fracture
Rock hydraulics
Seepage
Publisher
Springer Science and Business Media B.V.
Description
6th GeoChina International Conference on Civil and Transportation Infrastructures: From Engineering to Smart and Green Life Cycle Solutions, GeoChina 2021, 19 July 2021 through 21 July 2021, NanChang
Type
conference paper