该文介绍了在风大浪急且有较大潮差的平潭海峡跨海大桥勘察中,应用活动套管这一先进工艺,成功克服了海域钻探船舶晃动严重、潮差大等困难,显著提高了工作效率,促进了安全生产,为顺利完成该项目提供了有力保障。该文也可为其它类似工程提供借鉴作用。 This paper introduces the advanced technology of casing activity in the exploration of Pingtan Strait Bridge across the sea in a stormy and tidal wave. It successfully overcomes the difficulties such as serious swaying and large tidal range of the drilling vessel in the sea area, and significantly improves Work efficiency, promoted safety in production, and provided a powerful guarantee for the successful completion of the project. This article can also provide reference for other similar projects.