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介绍了鸡西矿业集团杏花煤矿东采区在上部23#煤层资源枯竭的条件下,为保证下部层的安全生产,对上部煤层生产巷道进行构筑隔爆永久密闭的设计及施工过程。
This paper introduces the design and construction process of constructing permanent flameproof enclosure in the upper coal seam production roadway in order to ensure the safe production in the lower part of the east mining area of Xinghua coalmine in Jixi Mining Group under the condition of the depletion of the upper 23 # coal seam.