论文部分内容阅读
在开采脉状矿床时,技术经济指标最高的留矿法得到广泛应用。但是,随着开采深度的大大增加和所开采矿床的矿山地质条件的恶化,近些年来留矿法的使用效率显著降低。在这些因素影响下,首先使放矿过程复杂化。利用苏联和其他国家的改进留矿法采场放矿工艺的经验(采用振动漏斗,改变采场底部结构、减小采场长度),不一定能保持
In the exploitation of vein deposits, the technical and economic indicators of the highest retention method has been widely used. However, with the drastic increase of mining depth and the deteriorating geological conditions of mines in the mined deposits, the utilization efficiency of retention method has been significantly reduced in recent years. Under the influence of these factors, the ore drawing process is first complicated. Using the experience of the Soviet Union and other countries to improve the ore-dressing process of the left-over mining method (using vibrating funnels, changing the bottom structure of the stope and reducing the stope length) may not be able to maintain