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本文针对混凝土水下病害整治中传统围堰干法施工的缺陷， 结合工程实例， 提出水下补强加固新技术．由现场模拟施工试验并经工程实际应用表明， 这一结合防渗、整体补强水下施工技术切实可行， 水下浇筑薄层不分散混凝土各项力学性能指标， 满足工程加固设计要求， 新老混凝土结合良好．
In this paper, for the defects of dry construction of traditional cofferdam in the treatment of underwater diseases of concrete, a new technology of underwater reinforcement is put forward based on the engineering examples. The on-site simulation of the construction test and the practical application of the project shows that the combination of seepage prevention and overall reinforcement of underwater construction technology is feasible. The underwater concrete thin-layer non-dispersed concrete mechanical performance indicators to meet the engineering reinforcement design requirements, the new Concrete is well bonded.