Here an experience on utilization of coal mine methane (CMM) to generate thermal and electric power at Kuzbass coal mines is given. A process model of CMM utilization is presented in the form of a Petri net. Keywords: coal mine methane, thermal power, electric power, power generating plant. 1.Introduction Nowadays, the majority coal mines of Russian mainly release methane into the atmosphere and almost never utilize it. Whereas, the extracted coal mine

-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.

No abstract

A brief analytical review about the issue status on monitoring the filtration properties changes of a coal rock massif under the influence of hydrodynamic impact, undertaken with the purpose to stimulate gas recovery from coal seams, is given. The necessity of improving methods and equipment used to determine the near borehole zone permeability is substantiated. The design features of a device designed to connect an electronic pressure gauge to a borehole to provide continuous monitoring of pressure fluctuation in horizontal degasification wells during injection tests are presented. The results of coal seams permeability measuring undertaken in conditions of Kuzbass mines are presented and discussed.