Mining of Mineral Deposits

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ISSN 2415-3435 (Print)

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Research intro rock pressure manifestations in interstratal rocks during descending and simultaneous mining of C9 and C 10 TOP coal seams

I. Kovalevska1, H. Symanovych1, M. Barabash2, V. Snihur3

1Underground Mining Department, National Mining University, Dnipro, Ukraine

2LLC “DTEK Energy”, Kyiv, Ukraine

3MM “Ternivske” PJSC “DTEK Pavlohradvuhillia”, Pavlohrad, Ukraine

Min. miner. depos. 2017, 11(1):50-56

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      Purpose.To estimate the probability of interstratal rocks stability loss during simultaneous mining of two seams in series in the descending order.

      Methods. Methods of a computing experiment and mine observations were used for conducting the research.

      Findings. Recommendations for the improvement of 914 bolting system parameters of complex roadway for possibility of its reusing are developed.

      Originality. Regularity of stress-strain state change of parting during simultaneous mining of coal seams with the purpose to reveal the constituent of rock pressure manifestations during the top seam mining is studied.

      Practical implications. The received results can be generalized for the purpose of providing recommendations concerningbolting and supporting of mine workings during simultaneous mining of seams in series.

      Keywords: coal seams, simultaneous mining, stress-strain state, parting, overworking


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