stage room mining method 阶段矿房采矿法
level room mining method 阶段矿房采矿法
room pillar mining method 房柱采矿法
room-pillar mining method 房柱采矿法
room-and-piller mining method 房柱法采矿
room and pillar mining method 房柱式开采
Bolting manual pillar and room method is a good future method of mining Mn ore body of medium thickness and small pitch.
人工柱锚杆房柱法是一种有前途的开采中厚缓倾斜锰矿床的采矿方法。
We propose a new mining method: point-pillar paste filling based on the combined advantages of room-pillar method and backfilling.
将房柱式开采和膏体充填开采的优点相融合,提出了点柱式膏体充填采煤方法。
The theoretical formulas are developed and applied to the prediction of the rock mass displacements and deformations due to underground mining by pillar-and-room method in mountain areas.
在实测资料统计分析基础上,建立了高陡山区房柱法地下开采岩体移动变形预测分析模型,并给出了岩体变形破坏的极限值。
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