Bolting manual pillarandroommethod 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。
2
Room-andpillar mining method with small roomandpillar.
小矿房、小矿柱的房柱法。
3
The theoretical formulas are developed and applied to the prediction of the rock mass displacements and deformations due to underground mining by pillar-and-roommethod in mountain areas.