In response to the issue of the significant impact of top coal mining parameters on top coal recovery rate,based on the engineering background of Tenghui Coal Industry's 2#coal seam,theoretical analysis,numerical simulation and other methods were used to determine the reasonable coal mining parameters as follows:the cutting height is 3 m,the mining ratio is 1:1.03,the coal mining step is 0.8 m,and the coal mining method is single wheel interval coal mining.On site testing was conducted on the 2-202 working face,and the monitoring results showed that under the aforementioned coal discharge parameters,the top coal recovery rate was 89.5%and the gangue content rate was 7.6%.The aforementioned design scheme is reasonable and feasible,which can ensure safe and efficient production of the working face.
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