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通过对2420回风巷的支护及其改进情况的分析,总结压力区中巷道变化规律,针对深井压力区回采巷道存在的普遍问题进行探讨。
Based on the analysis of the support and improvement of 2420 air return roadway, the variation regularity of roadway in pressure area is summarized, and the common problems existing in the mining roadway in deep pressure area are discussed.