VENTILATION PIPE COLUMN AERODYNAMICS UNPRACTICALITY TO MEET THE NEEDS OF PREPARATORY MINE OPENING AERODYNAMICS
Journal Title: Вестник научного центра по безопасности работ в угольной промышленности - Year 2018, Vol 0, Issue 4
Abstract
The article discusses three types of aerogasdynamics in mine preparatory openings together with the aerogasdynamics of the ventilation column and the fan when forced ventilation is used. It has been revealed that the greatest air leaks from the ventilation pipe column occur at the mouth of the opening, near the fan, and as the distance from the fan increases and closer to the opening blind end, the leakage decreases. In turn, gas emission at the mouth of the opening is less than at the blind end. There is a disproportion and inconsistency of air leaks from the ventilation pipe column and the needs of fresh air to dilute methane to the maximum permissible norms, and in such spots during opening heading dangerous layer methane accumulations occur.
Authors and Affiliations
A. M. Yermolaiev, V. V. Sobolev, V. G. Kazantsev, D. V. Botvenko, A. A. Yermolaiev
Keywords
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- EP ID EP645564
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