| 摘要 |
PROBLEM TO BE SOLVED: To provide an injection structure of a high-pressure injection stirring apparatus, injecting solidified material slurry as a more converged jet to make the solidified material slurry reach further to a distance, having a simple structure, easily manufactured at low cost, and further applicable even to a small-diameter rod. SOLUTION: In this injection structure of the high-pressure injection stirring apparatus 1, the solidified material slurry 10 is injected into the ground 6 to cut the ground 6, and also the solidified material slurry 10 and soil to be improved are mixed and stirred to make a cylindrical soil improvement body 8. The injection structure of the high-pressure injection stirring apparatus includes: a nozzle 9 forming an injection port for the solidified material slurry 10; and a streamline part formed extending from the rear end of the nozzle 9 toward the upstream side, 70 mm or more long and having a circular sectional shape with the same diameter. COPYRIGHT: (C)2008,JPO&INPIT
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