移动坑线开拓法,可以把前期较大的剥离量缓一部分到中后期处理,以减少初期的生产剥采比,提高露天矿的开采强度,降低前期的矿石成本,使经济效益在整个矿床的开采过程中,体现得比较合理。吉山铁矿原设计采用传统的固定坑线开拓方法。自1980年开拓31米新水平时,采用 Mobile pit line open method can be part of the larger part of the amount of stripping slow to the late processing to reduce the initial production stripping ratio to improve the mining strength of open-pit mines and reduce the cost of ore in the early stage, so that economic benefits throughout the deposit Mining process, reflected more reasonable. The original design of Jishan Iron Mine uses the traditional fixed pit line development method. Since 1980 to develop a new level of 31 meters, the adoption