METHOD FOR SUPPORT UNIT grouting bored piles

摘要

Method jet-grouting apparatus supports for drilled piles, comprising drilling a drill string to the design level, the rise of the rotation of the drill string and the simultaneous supply of jet cement slurry and compressed air, characterized in that after curing for 2-7 days it is carried out jet-grouting support drilling re and impregnating the cement slurry with particle size of 6 microns with water-cement ratio 2.4.