Singh, Ajoy Kumar and Paul, Avinash (2013) Variation of RMR for different rock types as immediate roof in Jharia Coalfield of India. International Journal of Software & Hardware Research in Engineering, 1 (1). pp. 44-55. ISSN 2347-4890

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Abstract

In India, CMRI-RMR (Central Mining Research Institute- Rock Mass Rating) is an empirical approach, used mostly for formulating design of support system for roadways in underground coalmines. RMR plays important role in selection and design of roof support [1]. For stability assessment of rock mass it is very important to know the amount of rock load coming around the openings which is estimated using RMR [4, 7, 11, & 12]. The result revealed that sandstone as immediate roof is more stable compared to shale and coal. Attempt has been made to delineate the variation of RMR for different roof rocks in mines of Jharia coalfield. This would also help as useful guidelines in design of support system for roadways in other underground coalmines of Lower Gondwana Formations having more or less similar geo-mining conditions.

Item Type:	Article
Uncontrolled Keywords:	CMRI- RMR, Jharia coalfield
Subjects:	Geo-Mechanics and Mine Design
Divisions:	UNSPECIFIED
Depositing User:	Mr. B. R. Panduranga
Date Deposited:	02 Aug 2016 06:08
Last Modified:	02 Aug 2016 06:08
URI:	http://cimfr.csircentral.net/id/eprint/1597

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