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一、盾尾整修原因在南京长江隧道工程使用过的1台直径为14.93m的泥水平衡盾构机,其盾尾在经过切割、拆解、吊装转场和长期放置后,产生了严重变形和扭曲。此外,盾尾油脂管及注浆管损坏、锈蚀、堵塞严重,大部分盾尾刷压板固定螺栓锈蚀和脱落,盾尾连接面切割不齐,部分焊接坡口已经缺失,且表面锈蚀严重。该盾构机盾尾是由4块盾尾块拼接
First, the reasons for the renovation of the tail shield In the Nanjing Yangtze River Tunnel project has been used in a diameter of 14.93m slurry balance shield machine, the shield tail after cutting, dismantling, lifting the transfer and long-term placement, resulting in serious deformation and distortion. In addition, the shield tail grease tube and grouting pipe damage, corrosion, serious blockage, most of the shield tail brush plate fixing bolts rust and fall off, shield tail connection surface missing, part of the weld groove has been missing, and the surface rust serious. The shield machine shield tail is spliced by 4 shield tail pieces