露天矿新水平的及时准备是强化露天开采工作的重要因素。这项工作对于干涸的露天矿来说是没有困难的,但是在涌水条件下,就变得复杂了。实践表明,在开拓露天矿含水水平过程中,最复杂的问题是掘进超前排水坑时的穿孔爆破作业。这项工作组织的正确与否关系到该水平整个开拓工程的成败。在大量充水 The timely preparation of the new level of open pit mine is an important factor in enhancing open pit mining. This work is not difficult for dry opencast mines, but becomes complicated under gushing conditions. Practice shows that the most complicated issue in developing the water level of open-pit mines is perforating blasting when driving ahead of the drainage pit. The correct organization of this work is related to the success or failure of the entire pioneering project at this level. In a lot of water