Risk Assessment on the Unstability of the Group of Mined-out Area Based on the Composite Index Classification Method

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Risk Assessment on the Unstability of the Group of Mined-out Area Based on the Composite Index Classification Method

ZHAO Ying-Gui, WANG Chun-Ren, YOU Xun, LIU Jin-Long, YU Min

Modern Mining . 2014, (08): 95 -98+101 .