中深孔爆破技术在巷道快速掘进中的应用  

Application of Medium-length Hole Blasting Technology in Rapid Excavation of Roadway

作　　者：段忠慧 DUAN Zhong-hui(Changcun Coal Mine of Lu'an Environmental Energy Development Co.,Ltd.,Changzhi 046102,China)

机构地区：[1]潞安环能股份公司常村煤矿,山西长治046102

出　　处：《煤》2020年第11期17-19,共3页Coal

基　　金：内蒙古自治区自然科学基金项目(2019M50505)。

摘　　要：常村煤矿S5-23抽采巷采用中深孔光面爆破掘进,根据现场地质及施工条件确定了合理的爆破参数,爆破采用斜眼掏槽,炮眼深度不小于2.0 m,共计布置42个炮眼。通过现场应用效果与中浅孔爆破对比,日循环进度增加1.2 m,炸药单耗降低了14 kg/m,炮眼平均利用率提升了7.8%,成本得以降低,工人劳动强度得到改善,掘进效率大幅度提升。In S5-23 extraction roadway of Changcun Coal Mine,middle and deep hole smooth blasting is adopted,and the reasonable blasting parameters are determined according to the site geology and construction conditions.Through the comparison between the field application effect and the middle-shallow hole blasting,the daily circulation progress increases by 1.2 m,the explosive unit consumption reduces by 14 kg/m,the average utilization ratio of the hole increases by 7.8%,the cost reduces and the Labor intensity of the workers improves,the tunneling efficiency has been greatly improved.

关 键 词：中深孔爆破 快速掘进 爆破参数 炮孔布置 

分 类 号：TD263[矿业工程—矿井建设] TD235