1　现状新汶矿业集团华丰矿是 190 9年由资本家正式开办 ,195 6年恢复建井 ,改革开放以后 ,经改扩建设计能力达 0 .9Ｍｔ/ａ,现实际产量达 1.2Ｍｔ/ａ以上。现已开采到 - 92 0ｍ水平 ,采深达 10 48ｍ ,摊子大 ,战线长 ,生产环节复杂 ,煤层倾角大 ,采煤机械化水平低 ,全部为炮采 1 Status The Xinwen Mining Group Huafeng Mine was formally opened by capitalists in 1909 and resumed its construction in 1956. After the reform and opening up, the design capacity of the project reached 0.9Mt / a and the actual output reached 1.2Mt / a . Has been extracted to - 92 0m level, mining depth of 1048m, large stalls, long lines, complex production processes, large coal seam angle, coal mining mechanization level is low, all for mining