深厚软土地基上某船闸围堰设计

Design of Shiplock Cofferdam on Deep Soft Soil Foundation

摘要:

以紧邻外海的双鱼岛填海工程游艇别墅项目船闸工程为例，从设计的角度对船闸围堰的总体布置、结构形式以及防渗技术进行重点研究。结合围堰所处的深厚淤泥地质条件，从结构安全、经济合理、拆除便利、就地取材等方面综合考虑，选取2种断面型式综合比较，推荐采用抛石挤淤堤+堤后防渗墙的方案，丰富了围堰的结构设计类型，并为类似工程提供借鉴。

关键词:船闸;深厚软基;爆破挤淤;围堰;防渗

Abstract:

Taking a shiplock project of yacht villas in Shuangyu Island Reclamation Project close to the offshore sea as an example, the overall layout, structural forms and anti-seepage technology of the shiplock are specially studied from the perspective design. Combined with the deep silt geological conditions at the cofferdam, comprehensively considering the structural safety, economical rationality, convenient demolition, using local material and the other aspects, two types of cross section are selected for the comprehensive comparison. It is recommended to use the scheme of riprap crowded silting dike + cutoff wall behind embankment, which enriches the structure design types of cofferdam and provides the reference for the similar projects.

Key words:shiplock, deep soil foundation, blasting crowded silting, cofferdam, seepage control