在大多数情况下,随着露天矿下部各水平层的开采,要增加坚硬矿石的采掘量,其特点是充水程度提高,正如生产经验证明,约50～60％爆破深孔中的水柱高度为0.5～6m,坚硬矿岩的裂缝性质不同,穿凿在这种矿岩中的充水深孔的装药工艺有其本身的特点,对这些工艺特点加以研究,才能提出对它加以改进的建议。 In most cases, increasing the harvested volume of hardened ore as each horizontal layer in the lower part of the open pit is characterized by an increased degree of water filling, as production experience has shown that about 50 to 60% of the height of the water column in the blasting deep hole Is 0.5 ~ 6m. The fractures of hard ore are different in nature. The charging technology of deep-water-filled deep hole drilled in this kind of ore rock has its own characteristics. Therefore, it is suggested that some improvements should be made on the characteristics of these processes.