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清孔作业清孔质量直接影响钻孔桩的沉渣厚度,影响桩的承载能力,一般采用钻机空转换浆的方法清孔或取渣清孔,采用空气吸泥机吸泥、泥浆分离器分离钻渣的方法进行清孔可以达到良好的效果。沉渣厚度指成孔并拆除钻机后,用经过标定的带小钢丝绳的测锤测量的孔深,减去安装钢筋笼及水下混凝土灌注导管后开始水下混凝土灌注前在同一测点用同一测量系统测量的孔深的差
The quality of the clear hole cleaning hole directly affects the thickness of the sediment of the bored pile and affects the carrying capacity of the pile. Generally, the method of emptying or removing the hole with a drilling machine is adopted, and the air is sucked by an air suction machine and the mud separator is used to separate the drill hole Slag method for cleaning holes can achieve good results. Sediment thickness refers to the hole and remove the rig, with the measured after the small wire rope with a measured hole depth, minus the installation of reinforced cage and underwater concrete infusion catheter before starting underwater concrete perfusion at the same measurement point with the same measurement The system measures the difference in hole depth