期刊
COMPUTERS AND GEOTECHNICS
卷 81, 期 -, 页码 212-228出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.compgeo.2016.08.014
关键词
Finite discrete element method (FEMDEM); Hydraulic fracturing; Hydro-mechanical coupling; Pore seepage; Calibration aperture; Fluid-driven fractures
类别
资金
- China Postdoctoral Science Foundation [2015M580953]
- National Natural Science Foundation of China [11602006, 11572009]
- Natural Basic Research Program of China [2011CB013505, 2014CB047100]
A hydro-mechanical coupled model that can simultaneously consider the pore seepage of a rock matrix and the fracture seepage is proposed to simulate three-dimensional hydraulic fracturing. This model appropriately takes into account the fluid leak-off into the surrounding rock matrix from the fracture. Several examples are given to validate the seepage algorithms and the coupled model. The results suggest that this model can solve problems involving pore seepage and fracture seepage through simple pure fracture seepage. Moreover, it can reproduce the fluid pressure distribution and the crack initiation and propagation and consider the fluid loss during hydraulic fracturing. (C) 2016 Elsevier Ltd. All rights reserved.
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