Sheorey, P. R. and Barat, D. and Mukherjee, K.P. and Prasad, R.K. and Das, M.N. and Banerjee, G. (1995) Application of the Yield Pillar Technique for Successful Depillaring Under Stiff Strata. International Journal of Rock Mechanics and Mining Sciences & Geomechanics Abstract , 32 (7). pp. 699-708. ISSN 0148-9062

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Abstract

Related in this paper is a case study of double-section contiguous depillaring of a 12. 6 m thick coal seam under massive and uncaveable sandstones. Drilling results indicate the sandstones to be 20-55m thick with high RQD values. Depillaring has been so far completed in five extraction panels, leaving properly designed yieM pillars in the goaf for prevention of air blasts. The paper gives the design procedure adopted for yield pillars and the results of long-term pillar displacement monitoring.

Item Type:	Article
Subjects:	Bord and Pillar Mining
Divisions:	UNSPECIFIED
Depositing User:	Dr. Satyendra Kumar Singh
Date Deposited:	22 Jan 2012 10:09
Last Modified:	22 Jan 2012 10:09
URI:	http://cimfr.csircentral.net/id/eprint/746

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