Research on Process Parameters and Engineering Applications of Block Coal Mining
In response to the problems of low block coal rate and high energy consumption in the mining of coal seams with large hardness thickness and underdeveloped fractures,taking the practical production of the 23101 working face as an example,based on the analysis of its basic geological conditions,the optimal fracturing treatment method suitable for the 23101 working face was determined to be double row hole fracturing through numerical simulation methods.According to the on-site conditions and theoretical calculations,the optimal mining process is the bi-directional coal end oblique cutting method,and the corresponding block coal rate index of the mining process has been increased from 37%to 75.8%.
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