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《HEBEI COAL》 2000-01
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Feasibility of protective coal-pillar-mining in artificial inclined steep drift in thick(ultra thick) coal seam of large slope

XU Zhao xi 1,QIAN Xiang hai 2 (1.Zhaogezhuang Coal Mine of Kailuan Coal Adminis., Tangshan 063102,China;2.Hebei Coal Sci.Res.Inst,Xingtai 054000,China)  
The feasibility of the protective coal pillar mining in the artificial inclined steep drift in the thick (ultra thick) coal seam of a large slope is discussed.
【CateGory Index】: TD823.213
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