复杂地质条件下海底隧道大断面钻爆法安全掘进施工技术

结合翔安隧道工程实践，对高风险海底隧道施工中如何应用超前地质预报技术,如何设计减震爆破技术,如何处理软弱富水围岩,如何预防及应对突泥、涌水等突发事件等进行了系统的研究和应用，总结出一套适用于复杂地质条件下，大断面、高难度、高风险隧道施工的安全掘进方法，为工程安全施工提供技术保障。

Safe"Drill and Blast"Driving Technology for Large Cross-section Sub-sea Tunnels under Complex Geological Conditions

With Xiang＇an sub-sea tunnel in Xiamen as an example,systematic study is made on the advance geological prediction technology,vibration-reducing blasting technology,soft and water-rich surrounding rock treatment technology and mud/ water gushing prevention and control technology during the construction of high risk sub-sea tunnels.The study results have been applied in the construction of Xiang＇an tunnel.A series of safe tunnelling methods suitable for the construction of difficult and high risk large cross-section tunnels under complex geological conditions are summarized,which can provide technical support for the safe construction of similar tunnels in the future.