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水下混凝土灌注在灌注水下混凝土作业中,应确保设备的完好,建议配置备用供电系统,采用两套混凝土生产、供应系统。混凝土应具有良好的和易性,每盘混凝土质量都应严格监控。安装前混凝土灌注导管应进行水密试验,水密压力根据钻孔桩深度确定并不小于1MPa。应严格核算导管长度,安装时导管宜接触孔底后再提起30cm,用测
Underwater concrete pouring In pouring underwater concrete work, should ensure that the equipment intact, it is recommended to configure the backup power supply system, the use of two sets of concrete production and supply system. Concrete should have good workability, concrete quality of each plate should be strictly monitored. Before installation, the concrete pouring pipe shall be watertight tested, and the watertight pressure is not less than 1MPa according to the depth of bored pile. Should be strictly calculated catheter length, the catheter should be installed at the bottom of the hole and then lift 30cm, with the test