In this paper, the research is carried out deeply aimed at the problems of the structure parameters of underground stope for transition from open pit to underground Mining in Shirengou Iron Mine.
针对石人沟铁矿露天转地下过渡期开采I区地下采场结构参数问题展开了深入研究。
2
During the mine from open - pit to underground mining, a key question is how to keep the stable transition.
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。
3
The key problem of transition from open-pit to underground mining is to realize smooth transition, whose key is output cohesion.