DefinePK

Abstract

The aim of the work was to study the experience and effectiveness of applying various methods of gas drainage in the mining of a thick coal-seam 52 in the geological conditions of the Kotinskaya mine, Russia. The range of gas drainage methods used at the mine included: preliminary methane drainage (predrainage) of the working seam, drainage from the goaf by vertical wells drilled from the earth's surface; drainage from the goaf by horizontal wells drilled through the pillar from the roadway; drainage from the goaf using a main gas drainage pipeline, installed behind a brattice and connected to a gas-exhausting fan mounted on the earth's surface. During the work, the gas control equipment data and the longwall face productivity data were analyzed. As a result of the studies, the dynamics of the emitted gas of the longwall face was established, the dependences of gas content of the longwall face output were obtained, and the relative cost of various gas drainage methods was established. The conclusion is that the low efficiency of predrainage of the working seam. The scientific novelty of the work is to establish the influence between zones of geological dislocations and the speed of advance of the longwall face and the volume of emitted gas of the block.