Modeling hydraulic cracks and inclusion interaction using XFEM

作     者：Bo He Xiaoying Zhuang 

作者机构：Institute of Continuum MechanicsLeibniz Universität Hannover30167 HannoverGermany College of Civil EngineeringTongji UniversityShanghai 200092China 

出 版 物：《Underground Space》 (地下空间（英文）)

年 卷 期：2018年第3卷第3期

页      面：218-228页

核心收录：

学科分类：07[理学] 0701[理学-数学] 070101[理学-基础数学] 

基　　金：The authors gratefully acknowledge the support,received from the NSFC Program(51474157) State Key Laboratory for Geomechanics and Deep Underground s Engineering,China University of Mining&Technology(SKLGDUEK1526) Science and Technology Commission of Shanghai Municipality(16QA1404000) Fundamental Research Funds for the Central Universities 

主　　题：Porous media XFEM Hydraulic fractures Crack propagation 

摘      要：In this study,we employ a coupled hydromechanical model to study the hydraulic fracture propagation path in porous media under the influence of existing pressurized *** hydraulic fracturing field study reveals that the existing natural voids and cracks alter the local properties of the porous media and influence the fracture propagation *** incorporate these phenomena into the presented hydromechanical model,which is constructed from the mass and momentum balance equations for saturated porous *** extended finite element method(XFEM)is applied for modeling the fluid flow through discrete *** nonlinear hydromechanical equations are solved by the Newton-Raphson scheme with an implicit time integration ***,numerical examples are presented and compared with experimental *** is found that the fracture propagation path is significantly influenced by the existing pressurized voids and essential properties of the porous media;that is,the crack trends to propagate towards the pressurized voids.