Determination of Key Process Parameters for Fully Mechanized Mining
In order to further improve the mining efficiency of thick and extra thick coal seams,reduce their mining costs,and enhance the competitiveness of coal mines,taking 88203 fully mechanized working face as an example,based on the analysis of coal seam,roof and floor conditions,the optimal mining height suitable for this working face is preliminarily determined to be 3.5 m.Then,the focus is on determining the number of coal discharge ports and coal cutting speed.Finally,the number of coal discharge ports is determined to be 3,and the corresponding optimal coal cutting speed is 6.54 m/min.This is of great significance for guiding practical production.
fully mechanized top coal miningthick coal seamcoal cutting speednumber of coal discharge portscoal mining height
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