跨海隧道深基坑穿越临海断裂带处理方案优化

Optimization of Treatment Scheme for Deep Foundation Pit of Cross-sea Tunnel Crossing Coastal Fault Zone

以深圳前海某跨海隧道深基坑穿越临海断裂带项目为例,通过现场勘察、数值模拟分析以及降水试验,将采用断裂带帷幕注浆的原设计方案优化为仅采取降水处理断裂带,实施效果良好,可为后续类似工程提供借鉴经验。

Taking a project of deep foundation pit of a cross-sea tunnel crossing the coastal fault zone in Qianhai,Shenzhen as an example,through the on-site survey,numerical simulation analysis and dewatering test,the original design scheme of curtain grouting in fracture zone is optimized to adopt the dewatering treatment for fracture zone only.The implementation effect is good,which can provide the reference and experience for the follow-up similar projects.