Displacement mechanism of above-the-coal strata and loading on support along extraction mine working behind the longwall

The augering mining of thin and very thin coal seams has been proposed for using the efficiency of this task, related to the stability of reusable mine workings. The interrelation has been established and optimized between the support loading parameters in the extraction working during the augering mining of thin and very thin coal seams with the stress-strain characteristics of the protective monolithic strip of variable rigidity. The strength properties of sand-cement stone for the erection of rigid and yieldable parts of the protective strip are studied. The regression equations are obtained, which allow to determine the rational force, deformation and geometric parameters of the “support – protective strip” system elements during the extraction workings maintenance.

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Maintenance of reusable mine workings during the augering mining of coal seams

Bondarenko

Symanovych

Kovalevska

et al. 2018

E3S Web Conf.

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Interaction of deformation-strength characteristics of the support load-bearing elements in the preparatory workings

Kovalevska

Barabash

Husiev³

et al. 2018

E3S Web Conf.

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The objective of this work is to study the relationship of the deformation-strength characteristics of the fastening system with its displacement value. The tendencies of influence are divided into two groups. The multivariate computational experiments have been performed in the conditions of coal-face works. It is shown the influence of geomechanical conditions of the mine working maintenance on the fastening system operating mode change when choosing its rational deformation-strength characteristics. On the basis of the performed studies, it was concluded that it is necessary to adjust the fastening elements of each specific support setting scheme. This is necessary to provide recommendations for the maintenance schemes optimization of reusable extraction workings.

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Displacement mechanism of above-the-coal strata and loading on support along extraction mine working behind the longwall

Cited by 2 publications

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Maintenance of reusable mine workings during the augering mining of coal seams

Maintenance of reusable mine workings during the augering mining of coal seams

Interaction of deformation-strength characteristics of the support load-bearing elements in the preparatory workings

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