新桥硫铁矿地下采矿方法的改进

Improvement of underground mining method for Xinqiao pyrite mine

针对新桥硫铁矿地下开采采用上行水平分层充填采矿方法 ,存在着矿石损失率高、作业条件差、采下矿石自燃、通风与地压控制困难等几个问题 ,提出改用分段空场嗣后充填法试采方案。经多年生产实践表明 ,改进后的采矿方法 ,其各项技术经济指标均得到显著效果。

In view of the underground mining of Xinqiao pyrite mine, when adopting the back filling method, there were such problems as high loss rate of ores, poor operation condition, spontaneous combustion of the mined ores, and difficult control of ventilation and ground pressure, thus the sublevel open stope filling method was proposed. Many years of practice showed that various technical and economic indexes had been remarkably perfected after improving the mining method.