A 2D, fully-coupled, hydro-mechanical, FDEM formulation for modelling fracturing processes in discontinuous, porous rock masses

被引：118
|
作者：
Lisjak, A. [1 ]
Kaifosh, P. [1 ]
He, L. [1 ]
Tatone, B. S. A. [1 ]
Mahabadi, O. K. [1 ]
Grasselli, G. [2 ]
机构：
[1] Geomechanica Inc, 390 Bay St, Toronto, ON M5H 2Y2, Canada
[2] Univ Toronto, Dept Civil Engn, 35 St George St, Toronto, ON M5S 1A4, Canada
来源：
COMPUTERS AND GEOTECHNICS | 2017年 / 81卷
基金：
加拿大自然科学与工程研究理事会;
关键词：
Hydro-mechanical (HM) coupling; Numerical modelling; Finite-discrete element method (FDEM); Rock fractures; Hydraulic fracturing; Fluid flow; DISCRETE ELEMENT SIMULATION; NATURAL FRACTURES; FLUID-FLOW; DEFORMATION; SHALE; PROPAGATION; CRACK; LAW;
D O I：
10.1016/j.compgeo.2016.07.009
中图分类号：
TP39 [计算机的应用];
学科分类号：
081203 ; 0835 ;
摘要：
This paper presents a new, fully-coupled, hydro-mechanical (HM) formulation for a finite-discrete element method computer code. In the newly-developed, hydraulic solver, fluid flow is assumed to occur through the same triangular mesh used for the mechanical calculations. The flow of a viscous, compressible fluid is explicitly solved based on a cubic law approximation. The implementation is verified against closed-form solutions for several flow problems. The approach is then applied to a field-scale simulation of fluid injection in a jointed, porous rock mass. Results show that the proposed method can be used to obtain unique geomechanical insights into coupled HM phenomena. (C) 2016 Elsevier Ltd. All rights reserved.
引用
收藏
页码：1 / 18
页数：18
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