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输水工程是南水北调工程的重要组成部分。渠道混凝土衬砌的主要目的是减小输水渠道渗漏损失,防渗节水,提高渠水利用率。但在混凝土衬砌施工过程中,经常出现一些质量缺陷,这些缺陷甚至影响工程结构安全。因此如何最大限度地减少质量缺陷、对于不可避免的缺陷进行修补是建设工程结构安全重要研究内容,是工程建设和管理人员急需掌握的知识和技术。文章对混凝土衬砌质量缺陷产生的原因、危害和修补措施进行探讨,以期为工程实践提供参考。
Water transfer project is an important part of South-North Water Diversion Project. The main purpose of channel concrete lining is to reduce the seepage loss of water transmission channels, seepage control and water saving, and improve the drainage efficiency. However, during the construction of concrete lining, some quality defects often appear, and these defects even affect the structural safety of the project. Therefore, how to minimize the quality defects and repair the unavoidable defects is an important research content in the construction of structural safety and is the knowledge and technology urgently needed by engineering construction and management personnel. This article discusses the causes, harms and remedies of the quality defects of concrete lining in order to provide reference for engineering practice.