Regular Room And Pillar Method 留规则矿柱法
Irregular Room And Pillar Method 留不规则矿柱法
room and pillar mining method 房柱式开采
room-and-pillar mining method 房柱采矿法
Room and pillar filling method 分矿房矿柱分层充填法
wide propelling room-and-pillar mining method 宽进路推进杆柱房柱法
pillar and room method 盘区房柱法
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。
Room-and pillar mining method with small room and pillar.
小矿房、小矿柱的房柱法。
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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