DEVELOPMENT OF A METHODOLOGY FOR DETERMINING THE VOLUME OF CAVITIES OF GAS ACCUMULATIONS IN WASTE AREAS AND METHANE CONTENT

https://doi.org/10.48498/minmag.2024.234.10.008

The article explores the use of degassing wells for capturing and utilizing methane at the Kirovskaya mine. The study presents results from measurements of gas pressure and flow rate at the vacuum pump station. An analysis of the parameters of the methane-air mixture and methane concentration in the mined-out space confirms the accuracy of the gas collector volume calculations. Factors affecting methane concentration, such as the volume of voids and fractures, were investigated, and methods for managing gas emission were examined. Methane concentrations in the Karaganda Basin mines can reach 90-95% after ventilation ceases. Methane flow rates through degassing wells ranged from 4.9 to 1380.6 thousand m³, with a total capture of 7547.1 thousand m³ over 21 months. The results highlight the importance of degassing wells for the safe management of gas emission.

D.R. Akhmatnurov, *N.M. Zamaliyev, M.S. Usenbekov, R.A. Musin