Systematic researches on the supporting design for the breaking cavern in No. 3 Mining District of Jinchuan are conducted, and some valuable achievements are obtained.
针对金川三矿区破碎硐室进行了较系统的支护设计研究，得到了一些有价值的成果。
Systematic researches on the supporting design for the breaking cavern in No. 3 Mining District of Jinchuan are conducted, and some valuable achievements are obtained.
针对金川三矿区破碎硐室进行了较系统的支护设计研究，得到了一些有价值的成果。
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