阐述了海底隧道的防排水原则，以厦门海底隧道为例讨论了钻爆法施工的海底隧道的合理排放量，提出了针对不同地层的防排水方案以及在海底隧道防排水设计施工中应注意的主要问题及需要研究的问题，提出的海底隧道防排水设计方法可为类似工程提供参考。

The waterproof and drainage principle for subsea tunnel is clarified. Based on Xiamen subsea tunnel, the suitable discharge is discussed. Different waterproof and drainage schemes for various grounds are put up, and the main problems that must be paid attention to and questions that must be studied further during subsea tunnel design and construction are put forward. The design method of waterproof and drainage system for subsea tunnel is a reference for other subsea tunnels.