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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Abstract

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
Divisions:	UNSPECIFIED
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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