Long spiral drilling rig is ideal equipment for soft foundation and foundation treatment, which includes hydraulic footstep frame and drilling system. The frame adopts hydraulic footstep under frame with high automation. Drilling system includes rotary head, output axis of drilling rig rotary head and spiral drilling rig.
The drilling rig adopts long spiral into the hole, concrete or mud injected for CFG pile construction by the drill pipe center tube, can be used to dry process into holes, prefabricated piles lead hole, grouting replacement. It can adopt deep mixing way and many kinds of construction methods after changing the drilling tools, especially suitable for foundation engineering construction in elevated railway, bridges, real estate and live engineering