露天转地下过渡层开采及处理方案研究

Research on Transition Layer Mining During Conversion from Open-pit Mining to Underground Mining and Disposal Plans

对露天转地下开采中的过渡层以上露天坑积水问题、露天部分的生产与过渡层处理之间的关系、过渡层本体的地压与监控、过渡层以下首层开采的生产安全、地下开采引起的露天边坡失稳、过渡层开采及处理形成覆盖岩层问题等开展深入研究。通过资料收集、物理力学试验、检测与监控、数值分析与计算、工业实验及论证等项科研工作的开展,最终制定出科学合理的解决方案。实现了真正意义上的露天转地下开采。

The key technologies used in eonversion from open- pit mining to underground mining were researched thoroughly. The technologies were used for mining and disposal of transition layer, disposal of water in open pit mine above transition layer, disposal of relation between production of open pit mine and transition layer, ground pressure and monitor of transition layer, mining safety of first layer below transition layer, disposal of open pit slope＇ s unstability problem caused by underground mining, mining of transition layer and disposal of rock cap. A series of scientific and research work was carried out, such as data collection, tests of physical mechanics, checking and monitor, numerical analysis and calculation, industrial tests and demonstration. The rational solving plan was worked out at last. Conversion from open-pit mining to underground mining was really realized.