open-pit mining boundary 露天开采境界
Traditional open-pit mining boundary features fixed slope with benches and planar bottom.
传统的露天矿开采境界为固定帮有台阶、露天底平面型。
The result shows that the development of the mining pit is affected by the interaction between the flow in the vicinity of the mining pit and its boundary.
试验成果表明，采砂坑内及其附近的水流与采砂坑边果相互作用的结果。
The stability of boundary pillar, which can be found across in mine shifting from open-pit to underground mining, is very important for safe production of underground mine.
境界矿柱稳定性分析是露天转地下矿山经常遇到的问题，对于矿山进行地下开采安全生产极其重要。
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