Extended finite element modeling nonlinear hydro-mechanical process in saturated porous media containing crossing fractures

doi:10.1016/j.compgeo.2019.03.006

CORC > 武汉岩土力学研究所 > 中科院武汉岩土力学所 > 岩土力学所知识全产出 > 期刊论文

	Extended finite element modeling nonlinear hydro-mechanical process in saturated porous media containing crossing fractures
	Yang, Diansen ; Zhou, Yun ; Xia, Xiaozhou ; Gu, Shuitao ; Xiong, Qingrong ; Chen, Weizhong
刊名	COMPUTERS AND GEOTECHNICS
	2019
卷号	111 期号:-页码:209-221
关键词	Fractured porous media X-FEM technique Crossing fractures Hydro-mechanical coupling Equivalent permeability
ISSN号	0266-352X
DOI	10.1016/j.compgeo.2019.03.006
英文摘要	A novel computational methodology is proposed in this work to simulate the nonlinear hydro-mechanical process in saturated porous media containing crossing fractures. Specifically, the weak form of mechanical coupling and mass transfer equations is derived based on Biot's theory and lubrication theory, respectively. The weak discontinuity for pressure field around T-shaped crack is described by a new junction enrichment function. The nonlinear hydro-mechanical coupled equations are obtained by Extended Finite Element Method (XFEM) discretization and solved by Newton-Raphson method. This proposed computational model is verified by comparing numerical results with analytical solution. The robustness of this numerical method is demonstrated by several examples. The effects of crack orientation, matrix stiffness, and confining stress on the equivalent permeability of fractured porous medium are investigated. Numerical results indicate that the interaction of cracks plays a critical role on the hydro-mechanical behavior of the saturated porous media containing crossing fractures.
WOS研究方向	Computer Science ; Engineering ; Geology
语种	英语
WOS记录号	WOS:000469160500019
内容类型	期刊论文
源URL	[http://119.78.100.198/handle/2S6PX9GI/14961]
专题	岩土力学所知识全产出_期刊论文
作者单位	1.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Wuhan 430071, Hubei, Peoples R China; 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China; 3.Hohai Univ, Coll Mech & Mat, Nanjing 211100, Jiangsu, Peoples R China; 4.Chongqing Univ, Sch Civil Engn, Chongqing 400045, Peoples R China
推荐引用方式 GB/T 7714	Yang, Diansen,Zhou, Yun,Xia, Xiaozhou,et al. Extended finite element modeling nonlinear hydro-mechanical process in saturated porous media containing crossing fractures[J]. COMPUTERS AND GEOTECHNICS,2019,111(-):209-221.
APA	Yang, Diansen,Zhou, Yun,Xia, Xiaozhou,Gu, Shuitao,Xiong, Qingrong,&Chen, Weizhong.(2019).Extended finite element modeling nonlinear hydro-mechanical process in saturated porous media containing crossing fractures.COMPUTERS AND GEOTECHNICS,111(-),209-221.
MLA	Yang, Diansen,et al."Extended finite element modeling nonlinear hydro-mechanical process in saturated porous media containing crossing fractures".COMPUTERS AND GEOTECHNICS 111.-(2019):209-221.