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http://dx.doi.org/10.7474/TUS.2013.23.4.280

Analysis of Whole Tunnel Stability by Using Rock Mass Classification and Mohr-Coulomb Analytical Solution  

Jung, Yong-Bok (KIGAM)
Park, Eui-Seob (KIGAM)
Ryu, Dong-Woo (KIGAM)
Cheon, Dae-Sung (KIGAM)
Publication Information
Tunnel and Underground Space / v.23, no.4, 2013 , pp. 280-287 More about this Journal
Abstract
Finite element or difference methods are applied to the analysis of the tunnel stability and they provide detailed behaviour of analyzed tunnel sections but it is rather inefficient to analyze all the section of tunnel by using these methods. In this study, the authors suggest a new stability analysis method for whole tunnel to provide an efficient and easy way to understand the behaviour of whole tunnel by using an analytical solution with the assumption of equivalent circular tunnel. The mechanical behaviour, radial strain and plastic zone radius of whole tunnel were analyzed and appropriate support pressure to maintain the displacement within the allowable limit was suggested after the application of this method to the tunnel. Consequently, it was confirmed that this method can provide quick analysis of the whole tunnel stability and the quantitative information for subsequent measures such as selection of tunnel sections for detailed numerical analysis, set up of the monitoring plan, and so on.
Keywords
Tunnel stability; Rock mass classification; Mohr-Coulomb failure criterion; Analytical solution; Support pressure;
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Times Cited By KSCI : 1  (Citation Analysis)
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