Wharf engineering of pilot boats in Xize which bridge approach bored pile uses rotary drilling in the method of positive cycle, slurry into the hole naturally, then perfuse concrete under water with cleaning the hole twice. The whole technology includes performing the hole and the pile. The hole includes rotary drilling, slurry wall and cleaning the hole once. The pile includes making steel reinforcement cage, putting the steel reinforcement cage, placing the catheter, cleaning the hole twice, perfusing concrete, pulling up the catheter at the division time and performing the pile. This passage will mainly introduce the construction technology.%西泽引航艇码头工程引桥钻孔灌注桩施工采用正循环回转钻进,自然造浆成孔,二次清孔导管法灌注水下砼.整个工艺分为成孔及成桩两大部分.成孔部分包括回转钻进成孔,泥浆护壁及一次清孔.成桩部分包括钢筋笼制作、下放钢筋笼、导管安放、二次清孔、砼灌注、分次起拔导管、成桩,本文介绍其施工工艺.
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