某石灰岩矿采矿方法试验研究

Test Study of the Mining Method of a Limestone Mine

针对某石灰岩地下矿山采用浅孔房柱法开采存在的一些问题,通过预切顶下向平行中深孔房柱法和上向扇形中深孔房柱法比选,确定开展预切顶下向平行中深孔房柱法安全高效回采技术研究。试验结果表明,新采矿方法在提高采场生产能力、降低采矿成本、改善通风安全条件等方面取得了良好的效果,可以在类似石灰岩地下矿山推广应用。

In view of the existing problems of shallow hole room and pillar mining method of a limestone mine,by conducting comparison and selection of pre-cut top downward parallel medium-length hole room and pillar method and upward fan-shaped medium-length hole room and pillar method,the safety mining technique study of pre-cut downward parallel medium-length hole room and pillar method is done.The test results show that the new mining method is good for improving the stope production capacity,reducing mining cost and improving ventilation safety conditions,which is further show that the method can be used to the similar limestone underground mines.