A fully coupled three-dimensional hydro-mechanical finite discrete element approach with real porous seepage for simulating 3D hydraulic fracturing

被引：151

作者：

Yan, Chengzeng ^{[1
]}

Jiao, Yu-Yong ^{[1
,2
]}

Zheng, Hong ^{[3
]}

机构：

[1] China Univ Geosci, Fac Engn, Wuhan 430074, Hubei, Peoples R China

[2] Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Wuhan 430071, Peoples R China

[3] Beijing Univ Technol, Minist Educ, Key Lab Urban Secur & Disaster Engn, Beijing, Peoples R China

来源：

COMPUTERS AND GEOTECHNICS | 2018年 / 96卷

基金：

中国国家自然科学基金; 北京市自然科学基金;

关键词：

3D finite discrete element method (FDEM3D); Hydro-mechanical coupling; Rock fracture; Porous seepage; Fracture seepage; Hydraulic fracturing; FLUID-DRIVEN FRACTURE; PLANE-STRAIN PROPAGATION; NUMERICAL-SIMULATION; MODEL; ROCK; INJECTION; MEDIA;

D O I：

10.1016/j.compgeo.2017.10.008

中图分类号：

TP39 [计算机的应用];

学科分类号：

081203 ; 0835 ;

摘要：

A fully coupled 3D hydro-mechanical model with real porous seepage is presented for simulating hydraulic fracturing. In this model, fluid flow in a fracture is expressed by 2D fracture seepage in the broken joint elements based on the Cubic law, while fluid flow in the rock matrix is represented by 3D porous seepage in the tetrahedral elements based on Darcy's law. Several problems that have closed-form solutions and a 3D fracturing problem are given to verify the model. The simulation results show that the model can capture crack initiation and propagation, and the fluid pressure evolution during hydraulic fracturing.

引用

页码：73 / 89

页数：17

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