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11月21日夜11点30分,随着最后一炮的浓烟散去,安徽皖北煤电集团重点工程祁东矿三采区总回风巷提前贯通,它的贯通对于改善该矿井下通风能力,实现双翼回风,以及提高该矿防灾、抗灾能力,确保安全生产将起到重要作用。三采区总回风巷是该矿改扩建重点工程,全长900米,掘进断面17.2平
At 11:30 pm on November 21, with the last shot of smoke scattered away, the total return air lane in the third mining area of Jidong Coal Mine, the key project of Anhui Fubei Coal and Power Group, was completed in advance. Its penetration improved the underground ventilation of the mine. The ability to realize the return of wings and improve the disaster prevention and resilience of the mine and ensure safe production will play an important role. The total return air lane in the three mining areas is a key project for the renovation and expansion of the mine, with a total length of 900 meters and a 17.1-level section for excavation.