| 摘要 |
PURPOSE:To form solidified columns by improving the efficiencies of stirring and mixing by a method in which ground is excavated, a soil stabilizer is injected into the ground, and excavated soil and the soil stabilizer are mixed together by a stirring blade turning at low speeds and an auxiliary stirring blade turning at high speeds. CONSTITUTION:A driver is operated, stirring blades 10, etc., are turned, the stirring blade 12 being turned is lowered to the ground's surface, and the ground is excavated by the excavating blade. A soil stabilizer is injected into the excavated soil from the discharge port, and the excavated soil and the soil stabilizer are mixed by the stirring blade penetrated into the ground. Excavated soil adhered to the blade 12 is mixed and stirred by an auxiliary stirring blade 22 penetrated into the ground, together with the blade 12. The mixing and stirring of even cohesive soil can thus be performed well, and given torque necessary for excavation can be easily obtained without the needs to enlarge the driving apparatus. |
