外海人工岛深厚软土地基超深塑料排水板施工技术

Construction technology of ultra-deep prefabricated drains in deep and thick soft foundation of offshore artificial island

根据港珠澳大桥岛隧工程东人工岛软基处理中塑料排水板施插深度大、施工深度内含有硬夹层的工程特点,采用改进后的静压式和振动锤式插排机,实现了复杂地质条件下超深塑料排水板打设施工,总结了施工技术和质量控制措施,可为类似地基处理工程施工提供参考。

Tacking the Hongkong-Zhuhai-Macao Bridge island and tunnel Project as an example, according to the charactristics of the large insertion length of prefabricated drains and the hard layer in construction depth during the soft foundation treatment of the East island, we used the improved static pressure type and vibration hammer type prefabricated drain machine to realizes the ultra-deep prefabricated drain set construction under complicated geological conditions, concluded the construction methods and quality control measure, which can provide a reference for the similar foundation treatment projects.