Experimental study on excavating strip coal pillars using caving zone backfill technology
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DOI: 10.1007/s12517-018-3914-7
Abstract: Strip mining was the major method to control surface subsidence when mining under buildings in China; however, its coal recovery ratio was only 30 to 50%, resulting in a large amount of coal resource waste… read more here.
Keywords: backfill; strip coal; excavating strip; coal pillars ... See more keywords