Abstract
The article is devoted to the analysis of the results of the mine instrumental measurements of the local degassing system of the m3 seam on the horizon of 1100 m of the mine named. V.M. Bazhanov to establish the basic rational parameters with the subsequent application of the biotechnological method of reducing the concentration of methane. As a result of mine instrumental measurements (vacuum-gas surveys at the borehole heads), the parameters of the degassing process (methane flow rate at the borehole heads and the average vacuum on them), technological parameters (angle of turn and tilt of wells, their length), well flow rate efficiency from the distance to the bottom of the longwall and the displacement of the undermined rocks. Establishing the basic parameters of degassing will allow you to quickly manage the flow rate of wells and underpressure at their mouths, taking into account the specific mining and geological and mining conditions. The use of biofilters allows controlling the concentration of methane in the atmosphere of mine roadway by methanotrophic bacteria.
Highlights
In the Donbas mines, the most widely used methods are the degassing of sites, based on methane captage through underground drainage wells drilled from development working
Subsequent degassing of the plots should ensure safe mining conditions. This can be applied biotechnological methods of degassing [3], the effectiveness of which increases with the deepening of mining and the associated increase in temperature and methane concentration
For the draining-out of gases of the site, the methane capture by wells drilled from a mine with an interval of 15 m in the over- and undermined rocks in the direction of the advance of the longwall was used
Summary
In the Donbas mines, the most widely used methods are the degassing of sites, based on methane captage through underground drainage wells drilled from development working. Subsequent degassing of the plots should ensure safe mining conditions. This can be applied biotechnological methods of degassing [3], the effectiveness of which increases with the deepening of mining and the associated increase in temperature and methane concentration. At most of the mines, methane is underpressured into the atmosphere as coal mining waste, and at a number of mines the degassing systems are operated extremely inefficiently, without ensuring the safety of mining operations. With increasing loads on the longwall, the requirements for the quality of methane capturing by local wells increase
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