The cross jet system is installed at the tips of mixing blades, making it possible to create a large-diameter uniformly improved body in close contact with a structure.

  • ジャックスマン


  • Achieves improvement rate of 100 %.
  • An improvement body can be created in close contact with a structure even with uneven surfaces like sheet piles, something difficult to achieve with the conventional method.
  • With conventional machines, an improved body with a constant diameter three times larger than by the conventional method is created by increasing the axial distance and the mixing blade size and widening the cutting diameter with the force of the jets.

Conventional method


  • Water cutoff and heaving prevention
  • Footing beams
  • Stabilizing earth retaining walls
  • Improving foundation ground of structures
  • Countermeasure against liquefaction of sandy ground