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Abstract 182811 working face of Wutongzhuang Mine, cut eye with net width 6 m, length 216 m, fully mechanized mining large section cut eye one-tunneling was adopted, the coal output system changed from 3~4 SGB-620/40T scraper conveyer to one Belt conveyor, which improved mining efficiency, saved support cost and labor, which provided experience for large section cut eye fully mechanized mining once-tunneling of the mine.
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