大红山铜矿矿房回采爆破参数优化研究

Study on Blasting Parameters Optimization of Mine Room Extraction of Dahongshan Copper Mine

为确定玉溪矿业有限公司大红山铜矿矿房回采更合理、更优化的爆破参数,基于利文斯顿漏斗爆破原理,进行多次爆破漏斗试验,得出孔径为φ76 mm的最佳爆破孔间距及最小抵抗线;再按照相似理论原则,确定出孔径为φ165 mm的下向大直径深孔爆破的最佳孔间距和排距等爆破参数;并经实践证明取得了较好的矿房爆破效果。

Multiple basting crater tests were conducted according to the Livingston Blasting Crater Theory,in order to confirm more reasonable and optimal blasting parameters of the Dahongshan copper mine room of Yuxi Mining Co.,Ltd.,and the hole diameter was determined to be φ76 mm,which is the optimal blasting hole spacing and minimum burden;it is confirmed the optimal hole spacing,row spacing and the other blasting parameter for downward big diameter deep hold blasting of φ165 mm hole diameter;it has been proved by practice to achieve good results in mine room blasting.