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顿巴斯各矿井在同时开采缓倾斜煤层群时,在大多数情况下都采用下行开采法进行回采,并且往往需要采动主要倾斜巷道和主要水平巷道,同时要用各种方法来保持处于被开采煤层中的这些巷道的稳定性。 有关文献中所介绍的保持下层采动巷道稳定性的方法只有两种:一种是下层采动煤层中的巷道用完整煤体维护;另一种是用
In the case of the simultaneous mining of gently inclined coal seams, each of the Donbass mines uses a downhole mining method in most cases and often requires the mining of major inclined tunnels and major horizontal alleyways, while maintaining a variety of methods The stability of these roadways in the mining seam. There are only two ways to maintain the stability of underground mining roadway introduced in the literature: one is to use the complete coal body to maintain the roadway in the lower mining coal seam; the other is to use