厦门海底隧道穿越富水砂层施工技术

Constructing Technique of Xiamen Benthic Tunnel through Watery Sand Stratum

厦门海底隧道在海域浅滩段有长约610m穿越富水砂层,是该工程施工的难点。介绍了隧道穿越该段富水砂层的施工方法。阐述了地下水控制和砂层加固处理的关键施工技术。该工程采用地下连续墙和降水井控制地下水,并与隧道内采用超前预注浆固结砂层相结合的施工方法,已安全穿越砂层最危险段,可供同类地质条件下的地下工程施工作借鉴。

It＇ s a difficult task when Xiamen benthic tunnel traverses the watery sand stratum in a shallow beach about 610 m length. The constructing technique is introduced in detail, which includes the groundwater control and the sand stratum consolidation. The aurthors argue, the experiences gained in this project would be practical in the underground engineering under same geological condition.