Deformation Law of the Surface and Shaft in North Region of Xiaoguanzhuang Iron Mine during Underground Mining

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Deformation Law of the Surface and Shaft in North Region of Xiaoguanzhuang Iron Mine during Underground Mining

QIU Jing-Ping, XIN Guo-Shuai, ZHANG Guo-Lian, SUN Xiao-Gang, YANG Lei

Metal Mine . 2016, (07): 99 -103 .