张庄铁矿高阶段矿房切割天井施工工艺试验

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孙永茂张强田奇志

Experimental Study on Construction Technology of High Level Chamber Cutting Raise in Zhangzhuang Iron Mine

SUN Yongmao ZHANG Qiang TIAN Qizhi

现代矿业 . 2020, (09): 94 -96 .