海底隧道防排水技术浅析——以厦门翔安海底隧道为例

Discussion on the technology of waterproof and drain of the subsea tunnel --in case of Xiamen Xiang＇ an subsea tunnel

由于海底隧道的特殊性，其防排水技术与一般陆地隧道有着显著区别，本文介绍了厦门翔安海底隧道的防排水方案设计情况，对方案实施效果进行了评估．得出了海底隧道防排水应结合围岩与支护的自防水功能采取以堵为主的原则，并针对海底隧道防排水方案实施中的问题，提出了对初期支护背后注浆是重点，改进注浆材料等建议．从而论述了防排水技术是海底隧道工程建设的核心问题．

Because of the specificity of subsea tunnel, the waterproof and drainage technology has distinct difference the general land tunnels. This paper introduces the scheme design on waterproof and drain of Xiamen-Xiang＇ an subsea tunnel with an evaluation on the effect of the scheme. It concludes that the waterproof and drainage technology of the subsea tunnel should adopt the principle of leak stoppage and combine the self-waterproof function of rock mass and supports. The author believes that the inject grout behind the primary lining is important, and the materials of inject grout should be improved. The technology of waterproof and drain is a core problem relates to the success or defeat of the subsea tunnel construction.