1) guide hole digging
导洞掘进
1.
1600m laneway is made by guide hole digging and twice accomplished well technology,incresing aveilability of explosive hole by 10% or so,decreasing specific consumption of explosive by 0.
导洞掘进二次成巷技术,使爆堆更加集中,铲装效率高;自由面增多,爆破效果良好;增大了补偿空间,一次爆破方量增多,大大提高炮孔利用率,提高了经济效益;辅助孔装药量增加,减少了周边孔的装药量,更好地控制了围岩。
2) tunneling
[英]['tʌnəlɪŋ] [美]['tʌnəlɪŋ]
隧洞掘进
1.
This paper expounds in detail the tunneling technical points and quality control methods of TBM.
详细阐述了全断面隧洞掘进机掘进技术要点和质量控制方法。
3) pilot tunnel excavation
导硐掘进
4) TBM for hard rock boring
硬岩隧洞掘进机
1.
Management of cutter-heads of TBM for hard rock boring;
硬岩隧洞掘进机(TBM)刀具的管理
5) tunnel driving equipment
隧洞掘进设备
补充资料：罅洞
1.缝隙和漏洞。
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参考词条