Stability Research of Overlying Strata and Shaft at Extraction of Residual Ores in Shallow and Large Scale Mined-out Area

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Stability Research of Overlying Strata and Shaft at Extraction of Residual Ores in Shallow and Large Scale Mined-out Area

FEI Hong-Lu, HU Gang, ZHAO Yan-Hai, ZHANG Long-Fei

Metal Mine . 2015, (08): 28 -33 .