Justification of a Method for Determination of Gas Content in Coal Seams to Assess Degasification Efficiency

Abstract

-the article presents a set of methods to assess gas liberation from coal substance on stages of drilling and coal core extraction, free gas discharge and gas diffusion from coal in the course of its activation by mechanical disturbance. The issues of their use in the mining industry are discussed. The analysis of ways to measure the methane desorption rate (volumetric method) and reservoir properties of coal is provided. Patterns of quantitative and qualitative distribution of methane within a coal rock massif are considered for the purpose of getting full information about fluctuation of volume and relative portion of residue gas under the impact of weathering and mining operations. A novel approach is suggested for the determination of gas content in coal seams to assess the effectiveness of degasification, to specify ventilation schemes and parameters of mining workings as well as to establish critical depths for sudden coal and gas outbursts manifestation and power accumulation for their potential occurrence.

Reduction of greenhouse gas emission through processing of coal mine methane using energy-conversion technology

“…For the development of process solutions on the enhancement of gas drainage efficiency, optimization of its cost and reduction of ecological impact, we undertook a detailed analysis of statistical data and scientific information on stimulation of gas drainage efficiency in coal mines [13][14][15][16] and on utilization of mine methane as the reduction of its emission should be provided by the Paris Agreement and by the Russian Coal Industry Development Program 2035.…”