1) Mass Caving
大量落矿
1.
Application of New Mass Caving Technology of Bunch-Hole Equivalent Spherical Charge;
束状孔当量球形药包大量落矿采矿新技术研究
2) Mass caving method
大量落矿采矿法
3) Mass mining
大量采矿
4) mass-caving mining method
大量崩矿采矿法
5) ore extraction
落矿
1.
But due to fanshaped arrangement of blasting holes and uneven distribution of explosive,the technology often causes great ratio of lumpy ore thus resulting in low efficiency of ore extraction.
中深孔落矿是我国地下金属矿山应用较为普遍的落矿方法,但在应用时由于扇形布孔、炸药分布不均匀,爆破后易产生大块,影响出矿效率。
6) a large additive amount of grinding fine ore
大掺量磨细矿粉
1.
Adopting such three fields as modified ligneous calcium, the compound use of leading gas agent and various maintainable conditions, the problem of improving the cubic stability of low cement-water ratio concrete with a large additive amount of grinding fine ore is discussed.
为提高海水环境中钢筋混凝土的使用寿命,从低砂率、低坍落度、低水泥用量方面优化混凝土配合比设计,采用改性木钙、引气剂复合使用和不同养护条件等三方面对改善低水灰比大掺量磨细矿粉大体积混凝土体积稳定性问题进行了探讨。
补充资料：落可也
1.见"落可便"。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条