... 安全监督装置：safety supervisor 暗挖区间隧道：under ground cut tunnel 安全协议标准：security protocol standard ...
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暗挖区间隧道
Tunnelling of hidden sections
以上为机器翻译结果，长、整句建议使用 人工翻译 。
暗挖区间隧道通过采用超前探测、增设临时仰拱、袖阀管、锁脚锚管等技术措施，安全、顺利完成了北四环路和北辰桥段的施工。
By adopting some technology of advanced detection, adding temporary invert, sleeve valve pipe and lock foot bolts, the construction of the tunnel is completed safely and successfully.
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