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随着露天矿的延深,对获得优质破碎块度和合适的爆堆参数提出了更严恪的要求。爆堆参数在矿床开采的运输系统中具有特别重要意义。在开采辉长岩和角闪岩的彼尔沃乌拉尔斯克露天矿进行了爆堆有效控制法的选择研究。露天矿70％以上的岩石,其平均裂缝间距为1.2～2米,属于特别难爆的岩石。目前采用的炮孔直径为125毫米,用逐排和沿对角线法进行微差爆破。单位耗药量为1公
With the deepening of open-pit mines, more stringent requirements have been put forward for obtaining high-quality broken blocks and appropriate parameters of the blasting pile. Blast pile parameters are of particular importance in the transportation system of the deposit. The study of the selection of an effective control method for blast furnaces was carried out in the open-pit mine Pirvouralsk, where gabbro and amphibolite were mined. More than 70% of open-pit rock, the average crack spacing of 1.2 to 2 meters, are particularly hard rock burst. The diameter of the blasthole currently used is 125 millimeters, with millisecond blasting by row and along the diagonal. The unit consumption of 1 public