深埋底抽巷炮掘水间隔装药结构与炮眼布置优化  

Optimization of solid-hydraulic coupled charge structure and borehole arrangement in deep buried bottom draw lane gunnery

作　　者：刘少伟[1,2] 隋纪胜 贾后省 付孟雄[1] 于涛 姚丙傲 LIU Shaowei;SUI Jisheng;JIA Housheng;FU Mengxiong;YU Tao;YAO Bing'ao(School of Energy Science and Engineering,Henan Polytechnic University,Jiaozuo 454000,China;Collaborative Innovation Center of Coal Work Safety and Clean High Efficiency Utilization,Jiaozuo 454000,China;Xinzheng Coal Electricity Zhengzhou Coal Industry Group,Xinzheng 451100,China)

机构地区：[1]河南理工大学能源科学与工程学院,河南焦作454000 [2]煤炭安全生产与清洁高效利用省部共建协同创新中心,河南焦作454000 [3]河南省新郑煤电有限公司,河南新郑451100

出　　处：《采矿与岩层控制工程学报》2023年第6期1-12,共12页Journal of Mining and Strata Control Engineering

基　　金：国家自然科学基金资助项目(52074102)。

摘　　要：为了有效解决岩巷钻爆法施工单次循环进尺较短、掘进面超欠挖等问题,以赵家寨矿14206工作面底抽巷为工程背景,采用数值模拟方法,从有效应力、振速、岩石损伤以及掘进面爆破效果等角度出发,分析了不同装药结构下岩石破碎特征。研究表明,全长装药和水间隔不耦合柱状装药结构的破碎半径相同,均为60 cm;通过巷道全断面爆破数值计算,揭示了2种炮孔间距下岩石阶段性破坏的演化规律,结果表明内部掏槽孔和崩落孔的布置间距应小于炸药有效破碎半径。现场试验结果显示,优化后的装药结构,其炮孔利用率达90%,进尺深度由1.5 m提高至1.8 m,整体装药量下降了5%。There are usually some issues such as short single-cycle footage and over-excavation of the excavation face in the construction of rock tunnel drilling and blasting method.Taking 14206 working face bottom pumping roadway of Zhaojiazhai Mine as the engineering background,a series of numerical simulations were therefore carried out to analyze the rock breakage characteristics of different charging structures based on the effective stress,vibration velocity,rock damage,and blasting effect of tunneling face.The results showed that the breaking radius of full-length charge and water-separated columnar uncoupled charge was the same as 60 cm.The evolution of rock failure caused by two kinds of hole spacing was analyzed,and the numerical simulation results indicated that the space of internal cutting hole and caving hole should be less than the effective crushing radius of explosive.Field test results showed that the optimized charging structure could increase the hole utilization rate to 90%and the penetration depth increased from 1.5 m to 1.8 m,which resulted in overall charge volume decreasing by 5%.

关 键 词：深埋岩巷 爆破掘进 装药结构 炮眼布置 

分 类 号：TD235.4[矿业工程—矿井建设]