Low-permeable gas-bearing and outburst-hazardous coal seam mining in the Karaganda Coal Basin
ПРОБЛЕМЫ ОТРАБОТКИ ГАЗОНОСНЫХ И ОПАСНЫХ ПО ВНЕЗАПНЫМ ВЫБРОСАМ УГОЛЬНЫХ ПЛАСТОВ С НИЗКОЙ ПРОНИЦАЕМОСТЬЮ В КАРАГАНДИНСКОМ УГОЛЬНОМ БАССЕЙНЕ
Baymukhametov S.K. Imashev A.Zh. Mullagaliev F.A. Mullagalieva L.F. Kolikov K.S.
2021Publishing house Mining book
Mining Informational and Analytical Bulletin
2021#2021Issue 10-11124 - 136 pp.
The layers of the Karaganda coal basin have a high gas content and low permeability. In addition, coal seams are dangerous due to sudden emissions of coal and gas. In article there are a brief overview of the parameters of mining operations and the choice of preparation methods is presented. Attention is focused on current and possible future practices in the Karaganda basin. Traditional methods of mining (and overworking) of a coal seam and achieving a higher level of permeability due to unloading of the massif are not always feasibility due to mining and geological conditions. Emissions from sinking, especially through the d6 seam, are still a big problem. New technologies for preventing emissions and predicting geological anomalies are being tested. The management of gas emission during cleaning operations also requires the integration of special methods. The results of improving the quality of sealing the wellhead of pre-degassing wells are presented in this article. Improving the quality of sealing has provided a significant increase in the concentration of methane and allows it to be used for generating electricity. The article considers the applied and prospective methods for ensuring effective control of gas release and extraction of conditioned methane.
Advance degassing , Advanced degassing , Cost , Degassing of the developed space , Emission hazard , Forecast , Gas content of coal seams , Permeability , Preliminary degassing , Unloading
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Karaganda Technical University, Karaganda, Kazakhstan
Mining Institute NUST “MISiS”, Moscow, Russian Federation
Karaganda Technical University
Mining Institute NUST “MISiS”
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