The practice cf mining room first and then pillars by overhand cut and cemented fill is widely used in China, but the condition for pillars recovery in later period is normally worse.
先房后柱的上向分层胶结充填法在我国应用较为广泛，但矿柱后期回采条件较差。
By means of initial strain method, the plastic problem in cut-and-fill mining is solved by integration equation.
本文采用了初应变法提出非线性问题的边界积分方程并指出了在充填采矿中的应用。
The upward horizontal cut and fill stoping method and the measures for safe mining are recommended.
推荐使用机械化上向水平分层充填采矿法，提出了安全回采措施。
To overcome the difficulty of unstability of orebody and surrounding rock, the test of flat-back cut-and-fill drift mining is carried out.
针对凡口铅锌矿狮岭顶板矿体和围岩极不稳固的牲，进行了机械化上向进路分层充填采矿工艺的试验研究。
Excellent results were obtained in mining of pillars using tailings in horizontal cut-and-fill.
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.
用尾砂分层充填法回采矿柱，取得了很好的经济效果。
应用推荐