分层吹填法在填海工程中的应用

Application of Dredger-fill In-layers in Sea Reclamation Project

分层吹填法在国内的填海工程中应用实例极少。以港珠澳大桥人工岛的填海工程为例,重点介绍采用分层吹填法围海造地的施工工艺和技术特点,并对分层吹填、打塑料排水板、堆载预压等不同施工阶段的固结沉降进行数值模拟,从固结时效、技术难度和施工效率等方面探讨分层吹填法的适用性和可行性。

Dredger-fill in-layer technique is seldom applied in Chinese sea reclamation project. Sea reclamation project of Hong Kong-Zhuhai-Macao Bridge Artificial Island is taken as an example, which focuses on the technical characteristics and construction technologies of dredger-fill in-layer method used in sea reclamation project. Then numerical simulation is made for the consolidation sedimentation at the stage of dredger-filling in- layer, inserting plastic drain plate and surcharge preloading construction. In addition, the applicability and feasibility of dredger-fill in-layer method are discussed by analyzing and comparing its consolidation ageing, technical difficulties, and construction efficiency.