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Numerical analysis of tunnel reinforcing influences on failure process of surrounding rock under explosive stress waves
Alternative TitleNumerical analysis of tunnel reinforcing influences on failure process of surrounding rock under explosive stress waves
Zuo Yujun1; Tang Chunan3; Zhu Wancheng2; Li Diyuan4; Li Shucai5
2008
Source PublicationJOURNAL OF CENTRAL SOUTH UNIVERSITY OF TECHNOLOGY
ISSN1005-9784
Volume15Issue:5Pages:632-638
AbstractBased on mesoscopic damage mechanics, numerical code RFPA(2D) (dynamic edition) was developed to analyze the influence of tunnel reinforcing on failure process of surrounding rock under explosive stress waves. The results show that the propagation phenomenon of stress wave in the surrounding rock of tunnel and the failure process of surrounding rock under explosive stress waves are reproduced realistically by using numerical code RFPA(2D); from the failure process of surrounding rock, the place at which surrounding rock fractures is transferred because of tunnel reinforcing, and the rockfall and collapse caused by failure of surrounding rock are restrained by tunnel reinforcing; furthermore, the absolute values of peak values of major principal stress, and the minimal principal stress and shear stress at center point of tunnel roof are reduced because of tunnel reinforcing, and the displacement at center point of tunnel roof is reduced as well, consequently the stability of tunnel increases.
Other AbstractBased on mesoscopic damage mechanics, numerical code RFPA~(2D) (dynamic edition) was developed to analyze the influence of tunnel reinforcing on failure process of surrounding rock under explosive stress waves. The results show that the propagation phenomenon of stress wave in the surrounding rock of tunnel and the failure process of surrounding rock under explosive stress waves are reproduced realistically by using numerical code RFPAED; from the failure process of surrounding rock,the place at which surrounding rock fractures is transferred because of tunnel reinforcing, and the rockfall and collapse caused by failure of surrounding rock are restrained by tunnel reinforcing; furthermore, the absolute values of peak values of major principal stress, and the minimal principal stress and shear stress at center point of tunnel roof are reduced because of tunnel reinforcing, and the displacement at center point of tunnel roof is reduced as well, consequently the stability of tunnel increases.
KeywordMODEL tunnel reinforcing numerical simulation explosive stress wave failure process inhomogeneity
Indexed ByCSCD
Language英语
Funding Project[Natural Science Foundation of China] ; [Major State Basic Research Development Program of China] ; [Postdoctoral Science Foundation of China]
CSCD IDCSCD:3384084
Citation statistics
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/151110
Collection中国科学院金属研究所
Affiliation1.Dalian Univ, Res Ctr Numer Test Materials Failure, Dalian 116622, Peoples R China
2.中国科学院金属研究所
3.大连大学
4.Cent S University, Sch Resources & Safety Engn, Changsha 410083, Peoples R China
5.山东大学
Recommended Citation
GB/T 7714
Zuo Yujun,Tang Chunan,Zhu Wancheng,et al. Numerical analysis of tunnel reinforcing influences on failure process of surrounding rock under explosive stress waves[J]. JOURNAL OF CENTRAL SOUTH UNIVERSITY OF TECHNOLOGY,2008,15(5):632-638.
APA Zuo Yujun,Tang Chunan,Zhu Wancheng,Li Diyuan,&Li Shucai.(2008).Numerical analysis of tunnel reinforcing influences on failure process of surrounding rock under explosive stress waves.JOURNAL OF CENTRAL SOUTH UNIVERSITY OF TECHNOLOGY,15(5),632-638.
MLA Zuo Yujun,et al."Numerical analysis of tunnel reinforcing influences on failure process of surrounding rock under explosive stress waves".JOURNAL OF CENTRAL SOUTH UNIVERSITY OF TECHNOLOGY 15.5(2008):632-638.
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