Banerjee, G. and Ray, A.K. (2001) New dimension in hard roof management. Journal of Mines, Metals & Fuels, 49 (1&2). pp. 13-18. ISSN 0022-2755

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Abstract

Extraction of coal under hard roof is a difficult task; Strata control problems like spalling of coal, overriding of pillars, air blast in bord & pillar workings and collapses of faces in longwall are common phenomena in Indian Coalfields. In India, there is no effective technique for hard roof management. Induced caving by blasting is the only available method to alleviate the problem but it has inheret limitations to practice. There is tremendous need to develop an effective technique to combat the hard roof problems. Control of hard roof by water injection under high pressure is a well established method in some countries but in India still it is at experimental stage. CMRI is trying to standardize the method to adopt in different Indian geo mining conditions. This paper emphasizes the necessity of the method and enumerates the limitations of other techniques so far available. It describes major parameters of the method elaborately and presents the principle and general methodology in longwall as well as in Bord & pillar workings.

Item Type:	Article
Subjects:	Longwall Mining
Divisions:	UNSPECIFIED
Depositing User:	Dr. Satyendra Kumar Singh
Date Deposited:	03 Mar 2012 09:45
Last Modified:	03 Mar 2012 09:45
URI:	http://cimfr.csircentral.net/id/eprint/1027

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