水闸与海堤连接段不均匀沉降预防措施初探

A Probe into Preventive Measures for Uneven Subsidence in Connections of Sluices and Seawalls

修建在软基上的水闸与海堤连接段的不均匀沉降,极易导致其他病害。因此,需要探讨其预防措施,以确保海堤自身安全及其减灾效益的发挥。在对浙江东部沿海水闸与海堤连接段沉降调查的基础上,分析不均匀沉降的成因,结合类似工程实践和数值模型计算分析结果,从勘探设计角度分析后确定:加强地质勘探工作,选择有效的地基加固处理方式和海堤护面形式,优化海堤设计断面,选用轻质堤身填筑材料部分取代土石料等措施,可有效地预防水闸与海堤连接段不均匀沉降及由此产生的危害。研究结果可为水闸与海堤连接段设计提供参考和指导。

Uneven subsidence in connections of sluices and seawalls on soft soil foundation, can easily lead to other diseases. An at tempt is made to find preventive measures to ensure their own safety and disaster- reduction efficiency. Based on an investigation of the uneven subsidence in connections of sluices and seawalls on the eastern coast of Zhejiang, the causes of uneven subsidence are an alyzed based on similar engineering practice and numerical simulation. Interviews were conducted from the exploration and design an gle, strengthening geological exploration work, selection of effective ground- treatment methods and seawalb proteetion form, opti mization of the seawall design- section, replacement of part soil and stone with light materials. These measures can effectively pre vent uneven subsidence and it is harmful. The results serve as a reference and guidance for the design of connections of sluices and seawalls.