设计出一整套操作性很强露天转地下开采方案。
Design a operative scheme which can carry out transferring from open pit mining into underground mining successfully.
过渡期的产量衔接是矿山露天转地下开采关键技术难题之一。
The output connection in transitional period was one of the key technical difficulties during the transition from open-pit to underground mining.
在露天转地下开采过程中，一个关键问题是如何确保其平稳过渡。
During the mine from open - pit to underground mining, a key question is how to keep the stable transition.
对永平铜矿露天转地下开采工程有关问题进行了探讨，为下一步工作提供参考。
Some problems about mining engineering from open-pit to underground mine are discussed, which will provide reference for the future work.
露天转地下开采矿山关键问题是如何实现平稳过渡，而平稳过渡的关键是产量衔接问题。
The key problem of transition from open-pit to underground mining is to realize smooth transition, whose key is output cohesion.
露天转地下开采矿山地下首采中段安全顶住厚度确定是矿山的关键技术问题，采用MSC。
The determination of safe pillar's thickness in the middle section of the first mining for transferring to underground mining from open pit is the key technical issue for mine. With MSC.
本文简要介绍了板石矿业公司上青矿露天转地下开采平稳过渡的经验以及对眼前山铁矿露天转地下开采的借鉴意义。
The experience of smooth transfer of Shangqing Iron ore Mine of Banshi Mining Company are introduced, which can be taken for reference by Yanqianshan Iron Ore 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。
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。
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.
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