论文部分内容阅读
对分段凿岩、大直径垂直深孔以及下向扇形深孔3种不同凿岩方式的技术经济指标、采切成本、穿爆成本进行比较,发现下向扇形深孔在回采成本方面具有较大优势,且矿块生产能力与大直径垂直深孔相当,为地下金属矿山实现降本增效提供了一种有效途径;对不同凿岩方式所采用的凿岩设备投资进行比较,发现在满足矿山生产要求的前提下,采用国产设备在设备投资方面具有较大的优势。
The technical and economic indexes, cutting and cutting costs and wearing explosion cost of three different rock drilling methods, ie, sectional rock drilling, large diameter vertical deep hole and downward fan-shaped deep hole, are compared. It is found that the downward fan-shaped deep hole has the following advantages And the production capacity of the nuggets is equivalent to that of large diameter vertical deep holes, which provides an effective way for the underground metal mines to reduce costs and increase efficiency. Compared with the investment in rock drilling equipment used in different rock drilling methods, Meet the mine production requirements under the premise of the use of domestic equipment in equipment investment has greater advantages.