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澳大利亚纽曼山铁矿设计台阶高度15米,总采深600米。该矿陡帮采场布置特点是底部采矿段与上部剥岩段分开,底部采矿段垂直矿体走向布置工作面,上部剥岩段由一组或两组剥岩台阶组成,一组台阶数4～6个。矿石工作面沿矿体走向推进,沿走向剥岩段超前采矿段100米左右。露天矿的生产过程是边采矿,边进行生产准备的过程。该陡帮开采的技术经济效果是:(1)基建工程量小、投产快、得利早;(2)降低前期剥采比,
Australia Newman Hill iron ore design steps height of 15 meters, a total mining depth of 600 meters. The characteristics of steep coal mining stope are that the bottom mining section is separated from the upper stripping section and the vertical mining section in the bottom mining section is arranged along the working face. The upper stripping section consists of one or two groups of stripping steps with a number of steps of 4 ~ 6. Ore face along the ore body to move forward along the strikes the rock section advanced mining section of about 100 meters. Open-pit mine production process is while mining, while the process of production preparation. The technical and economic effects of the steep gangue exploitation are: (1) small amount of infrastructural projects, quick operation and quick profits; (2) reducing the stripping ratio in the early stage,