High - pressure rotary spraying is mainly divided into waterproof, maintenance and reinforcement.
Three - axis mixing pile is mainly used for important fulcrum, bearing capacity, high cost.
High-pressure rotary jet pile is a kind of pile where cement slurry is sprayed into soil layer and mixed with soil mass by high-pressure rotary nozzle to form continuous lap cement and solid.The construction area is small, the vibration is small, the noise is low, but easy to pollute the environment, not suitable for the special soil which can not make the slurry solidify.
Three-axis stirring pile plays an important role in the foundation pit enclosure engineering. It is a kind of middle uninserted section steel, which is only used for stopping water. If soil retaining is needed, it should be combined with other technologies.One is to insert h-shaped steel (commonly known as SMW method) into the stirring pile body, which can stop water or act as retaining wall, suitable for digging shallow foundation pit.
