Improved Strength Criterion and Numerical Manifold Method for Fracture Initiation and Propagation

doi:10.1061/(ASCE)GM.1943-5622.0000676

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

	Improved Strength Criterion and Numerical Manifold Method for Fracture Initiation and Propagation
	Wei, Lai 1; Liu, Xuewei 1; Liu, Quansheng 2; Huang, Xing 1
刊名	INTERNATIONAL JOURNAL OF GEOMECHANICS
	2017
卷号	17 期号:5 页码:-
关键词	Rock mechanics Fracture network Fracture propagation-critical criterion Mechanical tests Numerical manifold method
ISSN号	1532-3641
DOI	10.1061/(ASCE)GM.1943-5622.0000676
英文摘要	This paper develops a novel empirical strength criterion and proposes a manifold method for fracture initiation and propagation. First, to investigate the influencing factors of fractured rock mass strength, a set of uniaxial and biaxial compression tests were performed on gypsum specimens. According to the experimental results, rock mass strength is attributable to nonlinear relationships with fracture inclination angle, length, and lateral pressure. Then, on the basis of strength theory and tests, an improved empirical strength criterion, which can describe the multi-influence of fracture inclination angle, fragmentation degree, and lateral pressure on strength of the rock mass and the path of fracture propagation, was established. Moreover, the critical conditions of tensile and shear fracture for fracture propagation are proposed and used with a numerical manifold method to simulate fracture propagation. Furthermore, in the modeling, the manifold element is regarded as the basic failure element, and the failure angle is used to determine propagation direction. The results of the fracture-initiation strength and the propagation path with traditional Mohr-Coulomb criterion and the improved empirical strength criterion are compared to validate the proposed method. (C) 2016 American Society of Civil Engineers.
WOS研究方向	Engineering
语种	英语
出版者	ASCE-AMER SOC CIVIL ENGINEERS
WOS记录号	WOS:000398536900007
内容类型	期刊论文
源URL	[http://119.78.100.198/handle/2S6PX9GI/4047]
专题	岩土力学所知识全产出_期刊论文国家重点实验室知识产出_期刊论文
作者单位	1.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn ; 2.Wuhan Univ, Sch Civil Engn, Key Lab Safety Geotech & Struct Engn Hubei Prov
推荐引用方式 GB/T 7714	Wei, Lai,Liu, Xuewei,Liu, Quansheng,et al. Improved Strength Criterion and Numerical Manifold Method for Fracture Initiation and Propagation[J]. INTERNATIONAL JOURNAL OF GEOMECHANICS,2017,17(5):-.
APA	Wei, Lai,Liu, Xuewei,Liu, Quansheng,&Huang, Xing.(2017).Improved Strength Criterion and Numerical Manifold Method for Fracture Initiation and Propagation.INTERNATIONAL JOURNAL OF GEOMECHANICS,17(5),-.
MLA	Wei, Lai,et al."Improved Strength Criterion and Numerical Manifold Method for Fracture Initiation and Propagation".INTERNATIONAL JOURNAL OF GEOMECHANICS 17.5(2017):-.