Ground improver

Abstract

Abstract PURPOSE:To permit the improvement of large-scale ground by a method in which a rod is attached in a sidewardly projective manner to the inside of the stirring blade of a ground improver, a grout flow path is provided in the rod, and a jet nozzle is provided to the tip of the rod. CONSTITUTION:While a rotary shaft 2 penetrated into the ground is pulled up while being turned, a grout is sent under pressure through the shaft 2 to the stirring blade 7. Whereupon, the valve 17 of the blade 7 is pushed down by the grout, and the grout goes through a first path 11 into a back chamber 10 and then pushes a piston 9. A piston rod 14 is projected sidewards, and the grout is jetted through a hole 15 from a jet nozzle 40. A large-scale ground can thus be improved by the length of the grout jetted from the rod 14.

Inventors

• 👤 Kazuo Miyamoto
• 👤 和夫 宮本
• 👤 Kazuhiro Watanabe
• 👤 一紘 渡辺

Bibliographic Details