DYNAMICS OF ROOF DISPLACEMENTS IN THE ADVANCED WORKING APPROACHED BY LONGWALL FACE IN A COAL SEAM
S. V. Rib1, V. M. Seryakov2, V. N. Fryanov1, L. V. Polishchuk3
1Siberian State Industrial University, Novokuznetsk, Russia
2Chinakal Institute of Mining, Siberian Branch, Russian Academy of Sciences, Novosibirsk, Russia
3LLC Yubileynaya Mine of TopProm JSC, Novokuznetsk, Russia
Keywords: Coal mine, stoping face, advanced working, roof displacements, mine experiment
Abstract
A comprehensive approach to predicting the parameters of geomechanical processes in the rock mass during mining of coal seams of complex structure is proposed. In order to match the calculated and full-scale data of roof displacements of preparatory workings, the formula for determining the calculated resistance of host rocks has been upgraded. The results of field observations on changes in the values of roof rock displacements at benchmark stations in the advanced working of the Yubileynaya mine when the stoping face approaches it are presented. The relations which allow predicting the values of roof displacements of advanced workings depending on the distance to the face are presented.
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