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某矿采用分层崩落法回采,采准天井以往都是打在矿体内或上盘围岩中,存在的缺点较多。本文对把采准天井打在下盘的布置方式进行了探讨。
A mine using subsidence caving mining, mining quarry in the past are hit in the ore body or hanging wall rock, there are more shortcomings. This paper discusses the layout of the quasi-patio in the next disc.