Room-andpillar mining method with small roomandpillar.
小矿房、小矿柱的房柱法。
2
According to mining condition in Xinli mining area, the roomandpillar filling method for large and thick ore-body is determined after research.
根据新立矿区开采技术条件,研究确定对厚大矿体采用分矿房矿柱分层充填法开采。
3
Aiming at the problem of drought and water shortage in north Shaanxi, we analyzed principles for designing roomandpillar water-preserved mining method.