面向市场　深化改革　不断提高企业经济效益大屯煤电公司龙东煤矿刘普地大屯煤电公司龙东煤矿是一座设计能力为９０万ｔ的中型矿井，１９８７年１１月建成投产，全矿现有１个综采队、５个掘进队以及其它辅助单位。矿井投产后面临着一系列问题：井下地质条件复杂、断层多、... Facing the market, deepening the reform and continuously improving the economic efficiency of enterprises. Datun Coal & Power Company Longdong Coal Mine Liupudi Datun Coal & Power Company Longdong Coal Mine is a medium-sized mine with a designed capacity of 900,000 tons. It was completed and put into operation in November 1987. There are 1 full-mesh mining team, 5 tunneling teams and other ancillary units. After the mine is put into production, it faces a series of problems: the underground geological conditions are complex, the faults are numerous,...