房柱式采煤法 breast and pillar ; room and pillar mining ; breast and pillar method ; post and stall
房柱式开采法 board and pillar method ; bord and wall method ; heading and stall system ; stoop and room
房柱式开法 board and pillar ; bord and pillar work
房柱法 room and pillar method ; room and pillar system ; Room and pillar ; room-pillar method
房柱开采法 chamber and pillar method
房柱式井采法 pillar and breast method
房柱式开采 room and pillar mining ; pillars mining
房柱式 room and pillar
划分房柱 [矿业] multiple openings
房柱构造 room and pillar structure
小矿房、小矿柱的房柱法。
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。
Bolting manual pillar and room method is a good future method of mining Mn ore body of medium thickness and small pitch.
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。
We propose a new mining method: point-pillar paste filling based on the combined advantages of room-pillar method and backfilling.
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