NECESSITY TO USE THE SEAM DEGASSING ACCORDING TO THE SEAM VERIFIED GAS CONTENT(ON THE EXAMPLE OF THE LONGWALL NO. 449 OF "CHERTINSKAIA-KOKSOVAIA" MINE)
In the article the mining technological situation research of Kuzbass Chertinski deposit seam 4 is described. Within mining lease of “Chertinskaia-Koksovaia” mine OOO “MMK-UGOL” estimation of the seam under work bedding geological conditions on geological survey data is done and electronic maps of the natural gas content, bedding depth, natural gas dynamic properties of the seam, volatiles emission, interseam thicknesses were constructed. Taking into account the experimental results obtained earlier, it is established that when working out long pillars, the features of gas-geomechanical processes in the coal-gas-bearing massif are characterized by undulation, modeling of geomechanical processes in the vicinity of the longwall pillar No. 449 with the estimation of the effect of working the lower seam on condition of seam 4. It was established that when coal extraction was preliminarily done at seam 5, the natural gas content of seam 4 decreased significantly. However, in the places where pillars at seam 5 were left, it is possible to have the natural gas content of seam 4 and to have the increased methane emissions when working out the longwall No. 449. The results of mine experiments on sampling coal from mine workings and the results of laboratory tests with selected samples for determining the gas kinetic characteristics of coal are given.The works were carried out according to the methodology developed at the Institute of Coal FIC UUKh SB RAS. Analytical studies of gas-kinetic processes on experimental data are performed and the natural gas content of seam 4 at the sampling points is specified. A map of the specified natural gas content of seam 4 was constructed within the extraction section No. 449, on the basis of which the preliminary seam degassing applying necessity substantiation was carried out.