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河南龙宇能源公司陈四楼煤矿是河南煤化集团永煤公司第1对大型现代化矿井,设计生产能力240万t/a,经过技术改造后核定生产能力为450万t/a。矿井采煤工艺为一次采全高的倾斜长壁后退
Henan Longyu Energy Company Chen Si Lou Coal Mine is the first large-scale modernized coal mine of Henan Coal Group Yongmei Company. The designed production capacity is 2.4 million t / a. After the technological transformation, the approved production capacity is 4.5 million t / a. Coal mining process for the mining of a full tilt of the long wall back