旺盛江水库南流江大渡槽灌注桩施工质量控制

Cast-in-place pile construction quality control at Nanliujiang large aqueduct of Wang-sheng-jiang Reservoir Reinforcement Project

南流江大渡槽工程是旺盛江水库除险加固工程项目内容之一。针对大渡槽工程地质、水文及设计特点,制定大渡槽专项施工方案。合理布置施工顺序,确定灌注桩施工工艺流程,从钢护筒的埋设、钻机钻孔、成孔检验、地质取样、钢筋笼制安、水下混凝土浇筑等步骤进行精心施工,控制好工程各项步骤和施工质量,大渡槽灌注桩各项质量指标满足设计要求,施工质量良好。

Nanliujiang large aqueduct is one of the components of Wang-sheng-jiang Reservoir Reinforcement Proj⁃ect.Specific construction program was drafted according to the geological,hydrological and design characteristics of the large aqueduct project.The construction sequence was properly arranged and the construction process of cast in-place piles was determined.The construction quality was controlled by control of all procedures such as embed⁃ding of steel casing,drilling by boring machine,hole forming inspection,geological sampling,fabrication and instal⁃lation of reinforcement cage,underwater concreting etc.All quality indexes of cast-in-place piles of large aqueduct conform to the design requirements.