TO THE QUESTION OF THE APPLICATION OF THE BILL OF THE ESTABLISHED SPACE IN COMPLEX MINING-GEOLOGICAL CONDITIONS
Journal Title: Вісник Кременчуцького національного університету імені Михайла Остроградського - Year 2017, Vol 1, Issue 106
Abstract
Purpose. To research the determination of the stress-strain state of the roof rocks on the developed coal seam under the method of controlling the roof in the cleaning face by laying the worked out space. Methodology. Analytical studies using the basic provisions of the theory of elasticity and the theory of oscillations have been used. Results. It has been found out that with the use of a bookmark developed, the stiffness of the system under consideration decreases and the influence of the disturbing force and the amplitude of the oscillations determining the stress-strain state of the lateral rocks during sudden collapse of the stratified strata and landing of the main roof is limited. Originality. In the system that has been regarded, the coal bed rocks of the coal seam that is being developed, are considered to be a beam with different support options. When studying the flexural oscillations of beams in such a system, it is necessary to take into account the deflection of the beam and the compliance of the security structures on which the beam rests. Practical value. The application of goaf stowing will ensure the operational condition of the mine workings. Сonclusions. The use of goaf stowing will improve the state of the lateral rocks by reducing the rigidity of the system under consideration, limiting the effect of the disturbing force upon sudden collapse of the lateral rocks and planting of the main roof, and also reducing the amplitude of the oscillations determining the stress-strain state of the roof and soil of the coal seam during operation mine workings. References 19, figures 8.
Authors and Affiliations
I. Yordanov, D. Chepiga, A. Petrenko, V. Kolomiets, А. Korol'
Keywords
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