Suitability evaluation of soft thick coal seam mining method in Baode Coal Mine

Shendong Mining Area mainly adopts two kinds of recovery processes of large mining height primary mining and top coal mining when mining thick coal seams, because of its different recovery processes, the adaptability to coal seams is also different.This paper takes the 8^# coal seam of Shendong Baode Coal Mine as the engineering background, and during the use of large mining height primary mining full height and top coal mining on multiple working surfaces that have been mined, focusing on the statistics of mine pressure, combined with the mine pressure of similar mines, the analysis of large mining high mining pressure is large, and strong ore pressure is prone to occur.For the unmined area of the 8^# coal seam of Baode Mine, a comprehensive evaluation is carried out from multiple angles such as coal seam, structure, top bottom plate, recovery rate, and the evaluation results show that the thickness of the coal seam, the obvious change of coal thickness, the average inclination angle of 9°, the development of cracks and the softness of the coal quality and the top plate are conducive to the use of top coal mining.The number of coal seams contains a large number of intercalation layers, but the collusion is mainly mudstone, according to past experience, the collusion has little impact on coal release.At the same time, the two mining methods are economically compared, and if large mining and high mining are used, the input is much greater than the return.Comprehensive technology and economic comparison that the unmined working surface of the 8^# coal seam is suitable for top coal mining.