水工隧道混凝土衬砌均存在不同程度的裂缝，本文介绍了尾水隧洞衬砌混凝土裂缝预防和不同类型裂缝的处理办法。
Cracks of different levels exists in hydraulic tunnel concrete liner. The prevention of liner concrete cracking at tailwater tunnels and measures on different levels cracking are discussed in detail.
盾构法隧道施工风险源具有多维性，为此对盾尾密封渗漏风险源进行分析。
There are multiple sources of risk in segmental tunnelling, so analysis is made of the source of leakage risk from the tunnel tail sealing.
盾尾空隙的存在是盾构法隧道施工引起土体变形的重要原因．而土体的变形又会对邻近结构产生影响。
The interspaces of shield tail is a main reason for the deformation of soil mass and adjacent structures owing to shield tunnel construction.
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