锡林浩特萤石矿竖井保安矿柱优化方法

Method for optimizing security pillars of shaft in Xilinhaote fluorite mine

锡林浩特萤石矿原设计采用65°岩移角圈定保安矿柱,随着采矿不断向深部发展,发现越来越多的矿石资源位于保安矿柱圈定范围内,导致可采矿量大大降低,严重影响矿山的正常生产。为解决这一问题,在对地表塌陷范围与准确塌落角测确的基础上,研究提出了利用临界散体柱作用机理来优化保安矿柱的新思路,有效解决了传统保安矿柱的过度圈定问题,避免了矿产资源的不必要浪费。现场应用中,释放矿量约5.1万t,经济效益显著。该保安矿柱优化方法可为类似条件的矿山提供借鉴。

Xilinhaote fluorite mine was originally designed to use a 65° rock transfer angle to delineate security pillars.As mining continues to deepen,more and more ore resources are found within the delineation of the security pillars,resulting in a significant reduction in mining capacity,and seriously affecting the normal production of the mine.In order to solve this problem,on the basis of measuring the collapse range and accurately measuring the collapse angle,a new idea of using the mechanism of the critical bulk solid column to optimize the security pillars was proposed,this effectively solved the problem of excessive delineation of traditional security pillars,and avoided unnecessary waste of mineral resources.On-site application,the release of ore is about 51 thousand tons,with significant economic benefits.The security pillar optimization method can provide reference for mines with similar conditions.