缅甸七星塘矿山孔底间隔装药技术的实验与应用

摘要

In order to solve the problem of water-holes charging difficult in Myanmar Kyisintaung mine blasting,the hole-bottom interval charging technology was adopted.According the blasting mechanism of the hole-bottom interval charging,refe-ring to the parameters and application of the existing research results,combined with the situation of the mining blasting,on-site experiments was conducted.The implementation principle of the hole-bottom interval charging technology was determined. The maximum interval length and minimum explosives height was controlled.The maximum interval length reaching to 21 .7%of hole depth and the explosives height reducing 30% was obtained.Hole-bottom interval charging technology solved the diffi-cult of water-hole charging in Myanmar Kyisintaung mine blasting.At the same time,the well blasting effect and economic benefit was obtained and it provided experience to solve similar problems in other mines.%为了解决缅甸七星塘矿山在开采爆破中含水孔装药施工困难的问题,采取了孔底间隔装药技术.根据孔底间隔装药爆破机理,参考目前已有的研究成果及应用参数,结合本矿山开采爆破的情况,进行现场实验,确定了孔底间隔装药技术的实施原则:控制最大间隔长度和最小药柱高度,获得了最大间隔长度为炮孔孔深的21.7%,药柱高度减少比例最多为30%的数据.采用孔底间隔装药技术解决了缅甸七星塘矿山开采爆破中含水孔装药施工的困难,同时获得了良好的爆破效果及经济效益,为孔底间隔装药技术在其他矿山解决类似问题提供了经验.