海堤加高加固施工技术研究

Construction Technology of Seawall Heightening and Strengthening

针对水利工程项目海堤加高加固施工技术展开研究。结合堤坝所在水域环境的水位信息,对混凝土防渗墙的高度以及原堤坝表层的切割深度进行设计,将其作为施工的基准。借助测量网测量了堤坝当前阶段的不透水临界位置,将其作为堤坝坡角开挖的目标深度,按照错位的方式对铺膜处理后,利用高压喷射灌浆防渗施工技术,基于堤坝坡角对地基裂缝以及混凝土防渗墙进行施工。实际应用结果表明,应用设计的海堤加高加固施工技术后,坝顶、坝身以及堤坝基底的渗流量分别稳定在1.20×10^(-9)、8.00×10^(-9)和2.30×10^(-9)cm/s以内,均达到了水利工程项目施工标准。

The construction technology of seawall heightening and strengthening for hydraulic engineering projects is studied.According to the water level information of the water area where the dam is located,the height of the concrete cutoff wall and the cutting depth of the original dam surface are designed and used as the base of construction.The impermeable critical position of the dike at the current stage is measured with the help of the measuring network,which is taken as the target depth of the dike slope angle excavation.After the membrane is laid in a staggered manner,high pressure jet grouting anti-seepage construction technology is used to construct foundation cracks and concrete anti seepage walls based on the dike slope angle.The practical application results show that the seepage flow of the dam top,dam body and dam base is stable within 120×10^(-9),8.00×10^(-9) and 230×10^(-9) cm/s respectively,after the application of the designed seawall heightening and strengthening construction technology,which meets the construction standards of hydraulic engineering projects.