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由鞍钢齐大山铁矿、东北工学院、鞍钢矿山研究所、鞍钢矿山公司科技处、青岛冶金矿山职工大学和鞍钢矿山公司设计院共同开展的齐大山铁矿15m台阶开采技术试验研究,历经两年,已完成工业试验,取得了显著的经济效益;于1992年3月13日至14日在鞍山市通过了冶金部矿山司主持的鉴定。在试验研究中使用现有设备(45 R-牙轮钻机、4m~3电铲、汽
The 15m step mining technology research of Qidashan Iron Mine was carried out by Anshan Iron and Steel Qidashan Iron Mine, Northeast Institute of Technology, Ansteel Mining Institute, Ansteel Mining Company Science and Technology Department, Qingdao Metallurgical Mine Workers University and Ansteel Mining Company Design Institute. After two years , Has completed industrial tests and achieved significant economic benefits; from March 13 to March 14, 1992 in Anshan City, adopted by Ministry of Metallurgical Division of the mine appraisal. The existing equipment was used in the pilot study (45 R-cone drills, 4m-3 shovels, steam