南水北调磁县段工程膨胀土处理施工质量控制

Construction Quality Control of Expansive Soil Treatment in Cixian County of the South-to-North Water Diversion Project

南水北调中线工程穿越膨胀土（岩）渠段长，处理技术难度大，质量要求高，是南水北调中线工程的主要质量控制难点之一。由于膨胀土处理施工技术应用于南水北调中线这种大规模的输水渠道工程实践经验较少，膨胀土处理程序复杂，施工难度较大。现结合南水北调中线磁县段工程膨胀土渠段的施工，从工程质量控制方面进行了分析，希望能为类似工程施工提供实践经验。

As the South-to-North Water Transfer Project crosses much expansive soil （rock） canal section with difficult processing technology and high quality requirements, it is one of the difficulties of main quality control of the South-North Water Transfer Project. There is a little ex- perience of application expansive soil treatment construction technology in the middle route of South-to-North Water Transfer Project, owing to complex expansive soil treatment procedure and difficult construction. In this paper, combined with the construction of expansive soil section of the Cixian County section of the South-to-North water project, the paper has carried on the analysis from the engineering quality control, hoping to provide practical experience for similar engineering construction.