THE CONCEPTUAL FUNDAMENTALS FOR THE FUNCTIONING OF THE MINE DEGASIFICATION SYSTEM
Journal Title: Вісник Кременчуцького національного університету імені Михайла Остроградського - Year 2018, Vol 1, Issue 113
Abstract
Purpose. The aim of the research is to develop conceptual fundamentals for the functioning of the mine degasification system based on the studies of the effect of the units of degassing and efficiency of their work on the concentration of me-thane in the ventilation flow. The accumulation of condensate in the pipeline degasation leads to increase in pressure of the gas mixture before the point of congestion, the drop in its consumption and reducing the amount of gas degassing wells. Methodology. When performing theoretical calculations there has been used mathematical modeling of the aerodynamic drag created by the accumulation of condensate in the precinct of degassing pipeline. Practical value. We have correlated the simulated results with the experimental data obtained by changing the concentration of methane in ventilation as it accumulates. We have conducted an analysis of methane content in the vent stream and established regularities of changes in the concentration of methane when disconnecting degassing and at the overlap of the pipeline. We have got the depend-ence of the aerodynamic drag created by the moisture accumulation in the drainage pipeline from the time of occurrence of interfacial interactions. This allows us to study the mechanism of changes in the concentration of methane in the produced space when the conditions of degassing. The practical value lies in the fact that the results of calculation degassing system allow to choose rational parameters, to select operation modes of vacuum pumps, providing energy savings and efficiency of the degasification process. Conclusions. For the first time, we have proposed two fundamentally different mechanisms of complex influence on the massif to enhance the impact of methane. For the first time, we have proposed the use of the ratio for the local aerodynamic drag of fluid in drainage tubing. For the first time, we have conducted a comprehensive study of the influence of moisture accumulation in the conduit on the dynamics of methane References 11, figures 3.
Authors and Affiliations
S. Kurnosov, L. Novikov, I. Konstantinova
Keywords
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- EP ID EP660745
- DOI 10.30929/1995-0519.2018.6.79-85
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