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利用长螺旋钻孔设备 ,采用压注泥浆护壁、水下灌注混凝土成桩施工工艺 ,成功地用于地下水位以下地层的钻孔灌注桩工程施工
The use of long auger drilling equipment, the use of pressure injection slurry mud wall, underwater pouring concrete pile construction technology, successfully used in the formation below the groundwater level bored pile construction