在深凹露天采场掘沟工程中,因为丰富的地下水的影响,如何提高掘沟穿孔成功率成为许多矿山生产过程中的难题。本钢矿业公司专业人员进行了这方面有益的探索,寻求到了在地下水、地表水丰富情况下,提高掘沟成孔率的有效方法,使用护孔套筒形成完整孔口,成功解决了这一技术难题。对其它深凹露天矿山和类似工程中有一定的参考价值。 Because of the abundant groundwater, how to improve the success rate of trenching and perforation has become a difficult problem in many mine production processes. Bengang Mining Company professionals conducted a useful exploration in this regard, seeking to the underground water, surface water rich case, improve trenching hole formation rate of effective methods, the use of perforated sleeve to form a complete orifice, successfully resolved this technical challenge. For other deep open-pit mines and similar projects have some reference value.