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Effects of infilling materials on mechanical behaviors and cracking process of pre-cracked rock: Insights from a hybrid continuum-discontinuum method

文献类型：期刊论文

作者Wu, Di1,2; Li, Haibo1,2; Shao, Zhushan3; Chen, Shihai4; Zhou, Chuanbo5; Liu, Liwang1
刊名ENGINEERING FRACTURE MECHANICS
出版日期2021-08-01
卷号253期号:-页码:19
关键词Hybrid continuum-discontinuum method Fracturing Filling flaw Sliding crack model Rock
ISSN号0013-7944
DOI10.1016/j.engfracmech.2021.107843
英文摘要The process of crack nucleation, initiation and propagation are of great significance in rock engineering such as hydrofracturing, underground excavation and gas or petroleum industry. In this study, the fracturing process of rock models with filled-flaws are mimicked by the hybrid continuum-discontinuum method. The effects both on mechanical response and cracking behaviors induced by the frictional properties including cohesion and friction coefficients of infilling materials are investigated. The results indicated that the minimum crack initiation stress of infilled flawed specimens lie in the inclination angle of 45-75 degrees with different cohesions. When the friction angle changes, the minimum crack initiation stress appears when the inclination angle is in the range of 15-60 degrees. The inclination angles are in accordance with that value when the normalized stress intensity factor of K1 acquired by changing cohesion and friction angle reaches maximum in the sliding crack model. Besides, with the increasing of cohesion and friction angle, the transition from wing crack to secondary crack appeared. The crack initiation sequence and pattern are comparable with the laboratory test.
资助项目National Key R&D Program of China[2020YFA0711802] ; National Natural Science Foundation of China (NSFC)[51779248]
WOS研究方向Mechanics
语种英语
WOS记录号WOS:000684749300006
出版者PERGAMON-ELSEVIER SCIENCE LTD
源URL[http://119.78.100.198/handle/2S6PX9GI/27661]  
专题中科院武汉岩土力学所
作者单位1.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Wuhan 430071, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Xian Univ Architecture & Technol, Sch Civil Engn, Xian 710055, Peoples R China
4.Huaqiao Univ, Xiamen 361021, Peoples R China
5.China Univ Geosci Wuhan, Fac Engn, Wuhan 430074, Peoples R China
推荐引用方式
GB/T 7714		 Wu, Di,Li, Haibo,Shao, Zhushan,et al. Effects of infilling materials on mechanical behaviors and cracking process of pre-cracked rock: Insights from a hybrid continuum-discontinuum method[J]. ENGINEERING FRACTURE MECHANICS,2021,253(-):19.
APA Wu, Di,Li, Haibo,Shao, Zhushan,Chen, Shihai,Zhou, Chuanbo,&Liu, Liwang.(2021).Effects of infilling materials on mechanical behaviors and cracking process of pre-cracked rock: Insights from a hybrid continuum-discontinuum method.ENGINEERING FRACTURE MECHANICS,253(-),19.
MLA Wu, Di,et al."Effects of infilling materials on mechanical behaviors and cracking process of pre-cracked rock: Insights from a hybrid continuum-discontinuum method".ENGINEERING FRACTURE MECHANICS 253.-(2021):19.

入库方式： OAI收割

来源：武汉岩土力学研究所

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