| 摘要 |
PURPOSE:To simply and securely form an evenly excavated, agitated and soil- improved ground with an aimed diameter. CONSTITUTION:A rotary shaft 2 inserted into the ground is provided with a freely extensible agitator 3 and nozzles 5 diagonally jetting downward a solidifying material 4. The nozzles 5 are arranged above the agitator 3 so that the jet streams of the solidifying material 4 ejected from the nozzles collide with the front end of the widened agitator 3 to reduce the jet energy of of the solidifying material 4 and control the diameter of the excavated, agitated and soil- improved ground so as to be of a specified dimensions. |
