Improvement on Deep Hole Pump-Suction Reverse Circulation Technology in Super Large Bridge
详细信息   
摘要
///The bored-grouting pile with diameter of 1 000～2 000 mm and depth of 100～130 m are often used in various projects. Pump-suction reverse circulation was traditionally used in the hole not more than 80 m deep, but by the improvement on the existing reverse circulation drill, the efficiency of pump-suction reverse circulation was greatly improved with pile hole of 1.8 m in diameter and 131 m in depth finished.
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