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济宁二矿通过“三条线”管理 ,合理集中生产 ,采用 175 0t井底煤仓和采用高标号(C6 0～C70 )混凝土等措施 ,使矿井决算投资降到 4 2 0 .7元 /t ,投产第三年即超过 4Mt/a的设计能力
The Jining No.2 Minerals Co., Ltd. managed the “three lines” and rationally concentrated its production. The 175t bottom coal bunker and the high-grade concrete (C6 0 ~ C70) concrete were used to reduce the mine’s final account investment to RMB4.27 / t, Put into production the third year that is more than 4Mt / a design capability