Substantiating the expedient route parameters for the location of the site outgassing wells in the Western Donbas conditions

Abstract

Abstract The paper deals with the issues of substantiating the parameters of location outgassing wells, determining their expedient routes in the mining-geological and mining-technical Western Donbas conditions. Based on the conducted multifactorial computer experiment, the patterns have been obtained of influence of the coal-overlaying formation texture on the parameters of its shear into the mined-out area. When determining the patterns of influence of mechanical properties of the coal-overlaying formation lithotypes, they are divided into three generalized groups: low, averaged, high. At the same time, the influence of the height and distance parameters the strongest and hardest lithotype occurrence, such as sandstone, has been studied. It is noted that with low mechanical characteristics, the gradient angle of the line of changing curvature sign of the rock layers bending in the direction of the coal seam dip is steadily decreasing. Conditions have been identified and criteria have been developed for the most effective routes for the location of site outgassing wells. The developed criteria, in combination with the dependences of the coal seam shear parameters, make it possible to create a methodology for determining the expedient coordinates for drilling outgassing wells based on the results of modeling by the finite element method.