| Numerical analysis of tunnel reinforcing influences on failure process of surrounding rock under explosive stress waves | |
| Alternative Title | Numerical 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 Publication | JOURNAL OF CENTRAL SOUTH UNIVERSITY OF TECHNOLOGY
 |
| ISSN | 1005-9784 |
| Volume | 15Issue:5Pages:632-638 |
| Abstract | Based 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 Abstract | Based 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. |
| Keyword | MODEL tunnel reinforcing numerical simulation explosive stress wave failure process inhomogeneity |
| Indexed By | CSCD |
| Language | 英语 |
| Funding Project | [Natural Science Foundation of China] ; [Major State Basic Research Development Program of China] ; [Postdoctoral Science Foundation of China] |
| CSCD ID | CSCD:3384084 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/151108 |
| Collection | 中国科学院金属研究所 |
| Affiliation | 1.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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