某地下磷矿山分段房柱法应用

Application of Segmented Room Column Method in an Underground Phosphorus Mine

在回采倾斜薄矿体时,矿石运搬问题极难解决。结合大湾地下磷矿开采实际,提出了采用无轨设备出矿的分段房柱采矿工艺,并对采场伪倾斜面与矿体走向夹角的确定方法进行了设计,合理地将采场划分为若干个分段,以有效减缓无轨设备的伪倾斜出矿坡度,从而高效、安全地进行出矿。实践结果表明,该方案可降低采矿综合成本和贫损指标,提高企业经济效益,具有良好的应用前景。

When mining inclined thin ore body,the problem of ore transportation is very difficult to solve.Combined with the actual mining of Dawan underground phosphorus mine,a segmented room and pillar mining technology with trackless equipment is proposed,and the method for determining the angle between the pseudo inclined plane of the stope and the trend of the ore body is designed.The stope is reasonably divided into several sections,so as to effectively slow down the pseudo inclined slope of the trackless equipment to carry out the mining efficiently and safely.The practical results of the scheme show that it can reduce the comprehensive cost of mining and the index of poor loss,improve the economic benefits of enterprises and have a good application prospect.