... 盾构(shield)： 盾构工作井(shield work shaft) 盾构始发(shield lanuching) ...
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shield work shaft
防护罩工作轴
以上为机器翻译结果，长、整句建议使用 人工翻译 。
Larger tunnel section brings larger exposed area and higher risks when shield departs from the working shaft, so the stability of reinforced soil in this stage is the new challenge for the work.
隧道断面越大，封门拆除时加固土体所暴露的面积也越大，施工风险也就越高。
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