新型光面爆破技术在边坡开挖中的应用  

Application of New Smooth Blasting Technology in Slope Excavation

作　　者：薛斌 徐恒阳 魏快快 肖宇航 李启月[2] XUE Bin;XU Hengyang;WEI Kuaikuai;XIAO Yuhang;LI Qiyue(CCCC Central-South Engineering Bureau Co.,Ltd.,Changsha 410118,Hunan,China;School of Resources and Safety Engineering,Central South University,Changsha 410083,Hunan,China)

机构地区：[1]中交中南工程局有限公司,湖南长沙410118 [2]中南大学资源与安全工程学院,湖南长沙410083

出　　处：《矿冶工程》2024年第6期28-31,共4页Mining and Metallurgical Engineering

摘　　要：为了改善传统光面爆破技术成本高、噪声大、效率低等问题,提出了一种无导爆索起爆的新型装药结构。根据光面爆破的要求,确定了光面爆破参数,对不耦合系数为3.8、3.9、4.0的炮孔分别进行无导爆索起爆的光面爆破试验,并分析光爆孔半孔率情况,比较3种不耦合系数炮孔的光面爆破效果。结果表明,各光爆孔使用无导爆索起爆的装药结构均能顺利起爆,3种不耦合系数下炮孔半孔率依次为78.40%、89.60%、57.60%。该新型光面爆破技术试验较好的不耦合系数为3.9。In order to address problems of high cost,high noise and low efficiency of traditional smooth blasting technology,a new charging structure without a detonating cord was proposed,and the parameters were determined according to the requirements of smooth blasting.Tests on smooth blasting without a detonating cord were carried out for blastholes with non-coupling coefficients of 3.8,3.9 and 4.0,respectively.Based on the analysis of the half-hole rate after smooth blasting,the smooth blasting effects of blastholes corresponding to three non-coupling coefficients were analyzed based on comparison.The results show that each blasthole for smooth blasting can be successfully initiated by using a charging structure without a detonating cord,and the half-hole rates of blastholes are 78.40%,89.60% and 57.60% respectively corresponding to those three non-coupling coefficients.It is concluded that an optimal non-coupling coefficient of this new smooth blasting technology in the test is 3.9.

关 键 词：边坡开挖 光面爆破 装药结构 爆破参数 无导爆索起爆 不耦合系数 爆破效果 半孔率 

分 类 号：TD235[矿业工程—矿井建设] U416.1[交通运输工程—道路与铁道工程]