The principle and technique of displacement jet grouting method

There is slurry overflowing from the mouth of pile using traditional technique for high pressure rotary injection,and the slurry contains some cement.For this,the paper discourses upon the principle and technique of liquid displacement and solid displacement in high pressure rotary injection.Case-study shows that,by using shis technique,there can be no overflow from pile mouth,or the overflowed slurry can contain much less cement.