Modeling study of cumulative damage effects and safety criterion of surrounding rock under multiple full-face blasting of a large cross-section tunnel

doi:10.1016/j.ijrmms.2021.104882

	Modeling study of cumulative damage effects and safety criterion of surrounding rock under multiple full-face blasting of a large cross-section tunnel
	Ji, Ling 3; Zhou, Chuanbo 3; Lu, Shiwei 2; Jiang, Nan 3; Li, Haibo 1
刊名	INTERNATIONAL JOURNAL OF ROCK MECHANICS AND MINING SCIENCES
	2021-11-01
卷号	147 页码:13
关键词	Large cross-section tunnel Surrounding rock Multiple full-face blasting Cumulative damage effects Peak particle velocity
ISSN号	1365-1609
DOI	10.1016/j.ijrmms.2021.104882
英文摘要	A blast-induced damage model integrating the tensile damage model with the Drucker-Prager yield condition is established. Based on the excavation of a large cross-section tunnel in China, the damage process of surrounding rock under multiple full-face blasting is simulated by the established rock damage model embedded into the LS-DYNA computer code through its user subroutines and a cumulative damage formulation in the LS-DYNA. The simulation results are well verified against field test data. The results show that the maximum damage depth of surrounding rock is determined by the blasting of the excavated cross-sections closest to the surrounding rock. Both the maximum damage depth and the maximum peak particle velocity (PPV) occur in the middle of the tunnel invert. Based on the defined damage threshold Dcr and the modeled maximum damage depth of sur-rounding rock, the influence of initiation sequence on the critical PPV for rock damage is studied, and a critical PPV associated with rock damage is proposed for tunnel blasting excavation.
资助项目	National Natural Science Foundation of China (NSFC)[41972286] ; Natural Science Foundation of Hubei Province of China (NSFH)[2017CFB310]
WOS研究方向	Engineering ; Mining & Mineral Processing
语种	英语
出版者	PERGAMON-ELSEVIER SCIENCE LTD
WOS记录号	WOS:000701981200003
内容类型	期刊论文
源URL	[http://119.78.100.198/handle/2S6PX9GI/28538]
专题	中科院武汉岩土力学所
通讯作者	Zhou, Chuanbo
作者单位	1.Chinese Acad Sci, Inst Rock & Soil Mech, Wuhan, Peoples R China 2.Yangtze Univ, Sch Urban Construct, Jingzhou, Peoples R China 3.China Univ Geosci, Fac Engn, Wuhan, Peoples R China
推荐引用方式 GB/T 7714	Ji, Ling,Zhou, Chuanbo,Lu, Shiwei,et al. Modeling study of cumulative damage effects and safety criterion of surrounding rock under multiple full-face blasting of a large cross-section tunnel[J]. INTERNATIONAL JOURNAL OF ROCK MECHANICS AND MINING SCIENCES,2021,147:13.
APA	Ji, Ling,Zhou, Chuanbo,Lu, Shiwei,Jiang, Nan,&Li, Haibo.(2021).Modeling study of cumulative damage effects and safety criterion of surrounding rock under multiple full-face blasting of a large cross-section tunnel.INTERNATIONAL JOURNAL OF ROCK MECHANICS AND MINING SCIENCES,147,13.
MLA	Ji, Ling,et al."Modeling study of cumulative damage effects and safety criterion of surrounding rock under multiple full-face blasting of a large cross-section tunnel".INTERNATIONAL JOURNAL OF ROCK MECHANICS AND MINING SCIENCES 147(2021):13.