露天采场临近边坡控制爆破试验及应用

凤凰山铜矿采用井下开采,上部中段回采后留下的残矿资源没有回收。为了充分回收矿产资源,稳定矿山生产能力,延长服务年限,对上部中段所留下的残矿进行露天开采。为了减少爆破震动的影响,维护露天边坡的稳定性,保护地表建筑物、古采矿遗址及相思河河流,对露天采场临近边坡采用控制爆破。经过充分论证并结合实际情况,选定了预裂爆破方案进行试验。试验结果表明,临近边坡预裂爆破达到了预期的目的,并在矿山推广应用。

APPLICATION AND TEST ON CONTROLLED BLASTING IN DRAW ON SLOPE OF OPEN-PIT

The Fenghuangshan copper mine is adopted underground mining,the mineral resources that returns to adopt to leave behind have not recovered in the upper part.For the purpose of recovering mineral resources,stabilizing the mine producibility,prolonging the service time,the remained ore carried on open-pit mine.In order to decrease the influence of blasting vibration,support the stability of the open-pit slope and protect the buildings,ancient mining sites and Xiangsi river of the earth's surface,then,adoption controlled blasting in draw on slope of open-pit.Based on the actual circumstance and the full arguments,select the project of presplitting blasting for remained ore.Test results show that presplitting blasting of draw on slope comes ture the expectation and promotes its application in mine.