巷道掘进爆破参数优化设计及施工  

Design and Construction for Optimization of Roadway Excavation Blasting Parameter

作　　者：赵艳伟[1] 孙龙 孙进辉 李清林 陈浩 何丽华[3] ZHAO Yanwei;SUN Long;SUN Jinhui;LI Qinglin;CHEN Hao;HE Lihua(Yuxi Mining Industry Co.,Ltd.,Yuxi,Yunnan 653405,China;Mining Research Institute,Yunnan Copper,Kunming,Yunnan 650051,China;Kunming Metallurgy College,Kunming,Yunnan 650033,China)

机构地区：[1]玉溪矿业有限公司,云南玉溪653405 [2]云南铜业矿山研究院,云南昆明650051 [3]昆明冶金高等专科学校,云南昆明650033

出　　处：《云南冶金》2024年第4期39-44,58,共7页Yunnan Metallurgy

摘　　要：大红山铜矿巷道掘进爆破施工中存在超欠挖严重、炮孔利用率低和光面爆破效果差导致围岩破碎等问题。通过爆破理论优化设计和结合爆破现场试验,采用筒形掏槽爆破、间隔装药结构、精确延期时间和合理的炮孔间距的全断面爆破方案。结果表明:综合炮孔利用率能够达到93.5%。半孔痕率较矿山原方案提升了40%左右,平均循环进尺较矿山原方案提升了0.34 m,炮孔利用率较矿山原方案提升了13%左右。In the roadway excavation construction of Dahongshan copper mine has the surrounding rock crushing problem caused by a series of overbreak-underbreaks,low utilization rate of blast holes,and poor effect of smooth blasting.The whole section blasting scheme(barrel grooving blasting,interval charging structure,precise extension time and the reasonable blast holes separation distance)was adopted through blasting theoretical optimization design and combined with blasting on-site tests.Results show:that the comprehensive blast holes utilization rate can reach to 93.5%.Compared to the old scheme,the semi-porosity trace increased about 40%,the average circulating footage increased by 0.34 m,the blast holes utilization rate increased about 13%.

关 键 词：巷道掘进 全断面爆破 控制爆破 参数优化 爆破施工 

分 类 号：TD451[矿业工程—矿山机电]