用尾砂分层充填法回采矿柱，取得了很好的经济效果。
Excellent results were obtained in mining of pillars using tailings in horizontal cut-and-fill.
在空区未充填的情况下回采矿柱，矿柱与采空区顶板的稳定性是一个关键问题。
The stability of the ore pillar and the roof is a key issue in the pillar recovery in unfilled mined-out area.
在空区末充填的情况下回采矿柱，矿柱与采空区顶板的稳定性是一个关键问题。
The stability of the ore pillar and the roof is a key issue in the pillar recovery in unfilled mined - out area.
建议在回采矿柱时，在临近充填体边上采用预裂缝降振技术，以及加强爆破管理，可以实现矿山的安全生产。
The production blasts at filling mining condition should produce adverse effects as blasting vibration to the filling body, tunnel and roof.
采空区上部预留矿柱的回采工作影响到整个矿山的安全生产、采矿方法及其实施。
Mining the ore in pillars above the mine-out area comes down to the security of production, mining methods and putting in practice.
对于阶段空场法，采矿系统设计主要包括采场结构参数、矿柱大小、回采顺序等。
To block stoping, mining system design mainly includes design of block parameter, design of pillar's dimension, design of ore drawing sequence.
本文提出了一种矿房矿柱阶段性连续回采，深孔放顶处理空区的采矿方法。
This paper introduced a new method for it, ie continuous stoping of room and pillar in stages and to fill mined bed with falling roof by deep-hole blasting.
本文提出了一种矿房矿柱阶段性连续回采，深孔放顶处理空区的采矿方法。
This paper introduced a new method for it, ie continuous stoping of room and pillar in stages and to fill mined bed with falling roof by deep-hole blasting.
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