机械掘进技术在弱胶结软岩巷道中的应用实践  

Application practice of mechanical driving technology in weakly cemented soft rock tunnels

作　　者：郑志杰 黄丹 杨小聪 郭利杰 ZHENG Zhijie;HUANG Dan;YANG Xiaocong;GUO Lijie(BGRIMM Technology Group,Beijing 100160,China;National Center for International Joint Research on Green Metal Mining,Beijing 102628,China)

机构地区：[1]矿冶科技集团有限公司,北京100160 [2]国家金属矿绿色开采国际联合研究中心,北京102628

出　　处：《矿冶》2024年第3期378-382,共5页Mining And Metallurgy

摘　　要：弱胶结软岩强度低、胶结差、易风化、遇水易泥化,采用传统钻爆法掘进时技术难度大、安全风险高、效率低、成本高。基于此,提出以悬臂式掘进机机械掘进代替传统钻爆法掘进的技术方案,并开展悬臂式掘进机机械掘工业试验。工业试验时间长达309 d、累计掘进进尺1 297.21 m、总工程量27 729.49 m^(3),悬臂式掘进机纯截割能力19.15 m^(3)/h,平均每日进尺4.2 m,平均每班进尺3.41 m。结果证明,采用悬臂式掘进机机械掘进技术可以有效解决弱胶结软岩岩体内钻爆法掘进过程中遇到的生产难题,机械掘进效率可以达到钻爆法掘进效率的1.4倍以上,并在大幅度提高掘进效率的基础上降低了掘进成本。研究成果可为弱胶结软岩巷道掘进提供技术参考。Weakly cemented soft rock has low strength,poor cementation,and is prone to weathering and turning into mud when exposed to water.The traditional drilling and blasting method faces significant technical difficulties,with high safety risk,low efficiency and high cost in such conditions.Based on this,the technical scheme of replacing the traditional drilling and blasting method with the cantilever boring machine is put forward,and the industrial test of the cantilever boring machine is carried out.The industrial test time is up to 309 d,the cumulative tunnelling footage is 1297.21 m,the total engineering volume is 27729.49 m^(3),the cantilever tunnelling machine demonstrated a pure cutting capacity of 19.15 m^(3)/h,with an average daily footage of 4.2 m,the average footage per shift is 3.41 m.The results show that the mechanical driving technology of cantilever boring machine can effectively solve the production problems encountered in the process of drilling and blasting in weak cemented soft rock mass.The mechanical driving efficiency can reach more than 1.4 times that of the drilling and blasting method,and the driving cost can be reduced based on significantly improving the driving efficiency.The research results can provide technical reference for weakly cemented soft rock roadway excavation.

关 键 词：弱胶结软岩 凿岩爆破 掘进 悬臂式掘进机 机械掘进 

分 类 号：TD91[矿业工程—选矿]