Gas release mode and longwall face length in conditions of single seam development
Abstract
The Pechora Coal Research Institute has established that the mines of the Vorkutskoye field are characterized by high methane abundance, which increases with the transition of mining operations to deeper horizons. However, the methane content of the mine as a whole, determined by the mining‑statistical method, cannot characterize the value of methane emission, for example, in stoping and preparatory faces under different mining and geological conditions. For example, gas emission within the limits of a stoping area when developing a single seam, a seam with satellites or a seam developed in two seams will be sharply different. Because gas emission at greater depths will create significant difficulties in ventilating the workings and may require special measures to control gas emission, it is necessary to have a clear understanding of the nature of gas emission under different mining and geologic conditions.
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References
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