跨渠桥梁占压段渠道人工衬砌施工

摘要

南水北调中线一期总干渠禹长段渠道上布置有大量桥梁，受桥墩遮挡影响，桥梁与渠道交叉处的衬砌施工无法采用机械进行，只能依靠人工施工。结合工程实例，对渠道桥梁占压段人工衬砌施工方法进行了介绍，主要论述了渠床整理、砂砾料垫层施工、桥墩止水施工、混凝土衬砌施工等面临的问题及解决方法。可为今后大型渠道桥梁占压段人工衬砌施工提供参考。%There are a large number of bridges along Middle Route Project of South to North Water Diversion. Sheltered by the bridge pier, it was impossible for mechanized construction at the junction of bridge and channel, so the artificial lining was nee-ded. The artificial lining for the channel section that is under over-passing bridge was introduced according to the engineering case, including canal bed treatment, gravel cushion pavement, bridge piers sealing as well as the problems and solutions in con-crete lining.