小断面地质探洞爆破掏槽方式现场试验  

Field Test of Blasting Cutting Mode of Small Section Geological Carving

作　　者：李新翰 LI Xinhan(Jiangmen Anheng Blasting Engineering Co.,Ltd.,Jiangmen 529000,China)

机构地区：[1]江门市安恒爆破工程有限公司,广东江门529000

出　　处：《河南科技》2024年第17期46-49,共4页Henan Science and Technology

摘　　要：【目的】研究不同的掏槽方式对探洞爆破掘进的影响。【方法】在辅助孔和周边孔采用相同的布孔前提下,统计地质探洞实际爆破掘进中两种不同掏槽方案的爆破效果,分别从钻凿工作量、爆破进尺、爆破块度等三方面进行对比。【结果】统计结果表明,在坚硬岩层中,14孔掏槽方案比10孔掏槽方案多钻凿4个炮孔,用时占整个作业循环时长的4.4%,平均进尺超后者14.9%,且前者更具稳定性,破碎块更加均匀。【结论】通过对比两种不同掏槽方式的爆破效果,可为坚硬围岩条件下,小断面爆破掘进掏槽孔布置提供参考。[Purposes]In order to research on the influence of different cutting methods on the blasting ex-cavation.[Methods]The blasting effects of two different cutting schemes in the actual blasting excava-tion of geological caving are statistically analyzed under the premise of same layout of the auxiliary hole and the peripheral hole.The drilling workload,blasting penetration and blasting block degree are respec-tively compared.[Findings]The statistical results show that in the hard rock stratum,the 14-hole cut-ting scheme drilled 4 holes more than the 10-hole cutting scheme,accounting for 4.4%of the whole working cycle time,and the average penetration was 14.9%higher than the latter,but the former was more stable and more uniform.[Conclusions]Comparing the blasting effect of two different cutting meth-ods,this paper can provide reference for the cutting arrangement of small section blasting under the con-dition of hard surrounding rock.

关 键 词：探洞掘进 小断面开挖 掏槽方式 开挖进尺 

分 类 号：TD235[矿业工程—矿井建设]