Authors: V.O. Torro, A.V. Remezov, E.V. Kuznetsov, Kulikova

Title of the article: Determination of aerodynamic parameters of the mined out spaces at layered mining of thick seams

Year: 2017, Issue: 3, Pages: 22-29

Branch of knowledge: Earth sciences

Index UDK: 622.272.6: 519.21

DOI: -

Abstract: The purpose of the given article is to provide the summary of study results of aerodynamics of the mined out spaces in order to decrease fire danger during layered mining of thick seams. During work performance, the conditions of panel ventilating were studied with the application of various: 1. Schemes of panel development; 2. Technological schemes of thick seams mining; 3. Ventilation schemes for panels in different geological conditions. In the study process, the following parameters were determined: specific aerodynamic resistance of the mined out spaces, distribution of air flows in the mined out spaces of various layers, laws of change of aerody-namic resistance of the mined out space along the length of the pillar in mining various layers. The analysis of ventilation conditions in panels during layered mining of thick seams showed the presence of great air leakages in the mined out spaces of the mined and existing layers in the pillars with the direction of production face both along the strike and to the dip of the seam. As a result, the conclusion has been made on the need to apply special measures directed on decrease of endogenous fire danger during layered mining of seams. Specific proposals have been developed.

Key words: aerodynamics of the mined out spaces return air ventilation scheme the combined scheme air leaks aerody-namic resistance self-ignition

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