Kushwaha, A. and Bhattacharjee, Rana and Tewari, Subhashish and Mandal, Prabhat kumar (2016) Role of geological discontinuities during application of continuous miner technology in underground coal mines. Journal of Mines, Metals & Fuels, , 64 (9). pp. 395-405. ISSN 0022-2755

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Abstract

A major portion of ground control problems encountered in underground coal mines can be attributed to geological discontinuities in the coal seam and the strata surrounding the seam. The role of geological discontinuities becomes more vital during application of mass production technology like continuous miner in maintaining safety, production and efficiency. Careful and detailed geological mapping to pick up the trend of joints, faults/slips, cleat etc., and documentation of roof instability problems encountered during development is essential in anticipating and controlling instability in the mine roof before planning of pillar extraction. Mapping helps in planning the orientation of extraction line to induce caving during depillaring and improving stability at the face significantly. Loss or damage of machines including decrease in production and productivity due to trapping of continuous miner may also be avoided. This technique estimates the orientation of major principal stress and avoids heavy expenditure on conducting in-situ stress measurements. It enhances in understanding the influence of drivage direction on roadway conditions and re-orientation of the roadways to attain stability in the roof. In the present paper, authors have dealt two cases, VK-7 incline and GDK-II incline mines of Singareni Collieries Company Limited (SCCL), where geological discontinuities played a crucial role during application of continuous miner technology in underground coal mines.

Item Type:	Article
Subjects:	Bord and Pillar Mining
Divisions:	UNSPECIFIED
Depositing User:	Mr. B. R. Panduranga
Date Deposited:	24 Dec 2016 04:56
Last Modified:	18 Jan 2017 04:39
URI:	http://cimfr.csircentral.net/id/eprint/1632

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