Goel, R. K. (1999) Time-Dependent Modulus of Deformation in Tunnels. Journal of Rock Mechanics and Tunnelling Technology , 5 (1). pp. 1-12. ISSN 0971-9059

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Modulus of deformation is recognized as one of the important parameters governing the rock mass behaviour. It is experienced that tunnel sections generally take long time to stabilise. These time-dependent deformation effect the tunnel lining along with the modulus of deformation of the rock mass. The in-situ deformation/closure data from 37 arched tunnel sections through non-squeezing ground conditions have been collected and equations obtained from two models viz. Burger’s four elements and Polynting’s three elements were used to develop correlation for estimating time-dependent deformation modulus. The study suggest that time for ninety per cent tunnel closure/deformation is less both for good quality rock and larger span of tunnel. The concept of retarded creep appears to be valid for weak and dry rock masses around a supported tunnel in non-squeezing conditions.

Item Type: Article
Subjects: Blasting
Depositing User: Dr. Satyendra Kumar Singh
Date Deposited: 25 Dec 2011 05:07
Last Modified: 25 Dec 2011 05:07
URI: http://cimfr.csircentral.net/id/eprint/483

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