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软弱岩层中近距离采空区煤柱下开采的实践
朱成, 段军, 孙智超, 许哲扬, 耿亮亮
Practice of Mining Under Pillars in Close-distance Mined-out Area in Soft Rock Layer
ZHU Cheng, DUAN Jun, SUN Zhi-Chao, XU Zhe-Yang, GENG Liang-Liang
金属矿山 . 2015, (03): 76 -79 .