Abstract
Thick coal seam is the main coal seam to achieve high efficiency coal mining. In this chapter, the common mining methods for thick coal seams are introduced. There is a large-cutting-height mining method and a top-coal caving mining method. Also, the ground control for the thick coal seam mining is described in this chapter. In addition to common features, ground control in thick seams has some particular features. Because of the large cutting height, it is difficult to fill up the gob directly with the immediate roof. When the upper roof caves, the impact loading will act on the shield, and the balance structure formed by the upper roof will be away from the face. Therefore, the determination of the dynamic load, the stability control of coal face and the mechanism of top-coal drawing are the keys to ground control in thick coal seam mining.
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