IN-MINE INVESTIGATION OF GEOMECHANICAL PROCESSES NEAR THE LOCAL WORKINGS IN THE STATE ENTERPRISE "«YUZHNODONBASSKAYA №1 MINE» COAL COMPANY"

UDC 622.261.2:622.28.04

Authors:

Solodyankin O.V., D.Sc. (Tech.), Professor (State H E I «NMU»)

Grigoriev A.E., PhD. (Tech.), Associate Professor (State H E I «NMU»)

Khalimendik A.V., PhD. (Tech.), Associate Professor (State H E I «NMU»)

Mashurka S.V., M.S. (Tech.), (State H E I «NMU»)

Abstract.

Purpose of the investigation was to study physics of geomechanical processes in the rock mass around the workings in difficult geomechanical conditions in the SE “Yuzhnodonbasskaya Mine №1».

The investigation complex included a visual inspection of the preparatory roadway state and instrumental measurements of the rock contour displacements.

Specific types of support deformations were revealed, and volumes of repair works were determined. Basic factors were formulated which determined a complexity degree of the workings use. Dependence between the rock contour displacements and timeline was specified for different stages of the workings exploitation.  Influence of the rock bottom lifting on intensification of the geomechanical processes in the workings was explained. Methods for improving the workings stability under the effect of large deformations in the marginal rock mass were analyzed. The most effective facilities are proposed for supporting operational condition of the workings under the effect of mining operations and for their further reuse in difficult geomechanical conditions.

Keywords:

extended working, in-mine researches, longwall, rock floor heaving, methods for working support, roof bolting.

References:

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