Ghosh, A.K. and Sinha, A. (1992) Mining of Wider Room-&-Pillar Stopes at Shallow Depth in Singhbhum Copper Belt - Proposal. Indian Mining & Engineering Journal , 31 (12). pp. 21-26. ISSN 0019-5944

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Abstract

Application of the geotechnical approaches for optimization of room-&pillar stope span in jointed rock mass in Singhbum copper belt has been presented in this paper. The aim of this study was to find out the feasibility of this stopping method with rooms wider than the existing design with an aim to increase the productivity and ore recovery. The findings of the study indicate that under certain geomining condition 20 m wide rooms can be mined safely instead of the 15 m wide ones, as presently practiced, specially at shallow depth, keeping other stopping parameters unchanged. It is expected that this suggested design, if adopted, would lead to a reduction of development cost by 20% and rise in ore recovery by 5% leaving aside other technical advantages.

Item Type:	Article
Uncontrolled Keywords:	Underground mining, room-&pillar stopping method, rock mass classifications, jointed rock, rock mass stability, maximum unsupported span, design rock mass strength, full column cement grouted rock bolting
Subjects:	Mines Systems Engineering
Divisions:	UNSPECIFIED
Depositing User:	Dr. Satyendra Kumar Singh
Date Deposited:	27 Jan 2012 05:22
Last Modified:	27 Jan 2012 05:22
URI:	http://cimfr.csircentral.net/id/eprint/794

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