Kushwaha, A. and Singh, Satyendra Kumar and Tewari, Shubhashish and Sinha, A. (2010) Empirical approach for designing of support system in mechanized coal pillar mining. International Journal of Rock Mechanics and Mining Sciences , 47 (7). pp. 1063-1078. ISSN 1365-1609

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Mechanized room-and-pillar system of coal pillar mining using side dump loading machine or load haul dumper machine, or by continuous miner, is the presently most dominant underground method of extraction in India. Under this method of extraction, strata control is a major problem affecting safety and productivity of the mine. As per existing Director General of Mine Safety guidelines, systematic support rules must be followed at the depillaring faces irrespective of immediate roof rock type and competency. Therefore, there is a high chance that sometimes these systematic support rules give unnecessarily high support, or sometimes inadequate support, which may lead to roof failure at the face. As a result, there is a big loss of life and material including coal in terms of left-out ribs/stooks and other associated mining equipment deployed at the faces. Therefore, in the present paper, authors attempted to develop generalized empirical equations for estimating the required support load density at different places of the face based on geotechnical parameters of the mine and physico-mechanical properties of the immediate roof rocks for designing of support system during mechanized coal pillar mining.

Item Type: Article
Uncontrolled Keywords: Delamination, Post-processed, Immediate roof, Geotechnical, Failure criterion, Empirical design, Rock support
Subjects: Bord and Pillar Mining
Depositing User: Dr. Satyendra Kumar Singh
Date Deposited: 26 Apr 2012 04:47
Last Modified: 26 Apr 2012 04:47
URI: http://cimfr.csircentral.net/id/eprint/1118

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