“sublevel caving method without sill pillar”的概念、定义、翻译、参考文献-科学参考

单词	sublevel caving method without sill pillar
释义	sublevel caving method without sill pillar Encyclopedia 工学阶段崩落采矿法释 sublevel caving method without sill pillar无底柱分段崩落采矿法将阶段划分为分段后，自上而下逐步进行分段崩落回采矿石的采矿方法。分段下部不设由专用出矿巷道所构成的底部结构，分段的凿岩、崩矿和出矿工作在同一个分段回采巷道中顺序进行，以较小的崩矿步距向崩落区进行挤压爆破，崩落的矿石在松散覆岩下，自回采巷道的端部直接放出，利用装载设备运至溜井，再由矿石溜井溜放至阶段脉外运输巷。
随便看	The International Ceramic Symposium and Art Education Exchange Program The International Charter of Physical Education, Physical Activity and Sport The International Cognitive Linguistics Association The International Committee for Museum Security The International Congress of Entomology the international convention on the prevention and control of ship pollution The International Cooperative Programme on Air Pollution Effects on Natural Vegetation and Crops The International Council for Industrial and Applied Mathematics the International Council on Monuments and Sites The International Council on Systems Engineering The International Day of Families The Internationale The International Federation of Automatic Control The International Federation of Multimedia Associations The International Festival of Photojournalism in Perpignan The International Film Festival Rotterdam The International Folk Music Council The International Gas Union The International HapMap Project The International Information Centre for Terminology The International Institute of Fisheries Economics & Trade The International Journal of Lexicography The International Journal of Robotics Research The International Medical Journal the international nuclear and radiological event scale

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