Ground improvement mixing method and its apparatus

The ground improvement device with a single shaft, mixing blades, and a cylindrical stirring area ring addresses lump formation and co-rotation issues by injecting material at high pressure, achieving uniform mixing and high-quality ground improvement.

JP2026101447AActive Publication Date: 2026-06-22YBM
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Patent Information

Authority / Receiving Office
JP · JP
Patent Type
Applications
Current Assignee / Owner
YBM
Filing Date
2024-12-10
Publication Date
2026-06-22

AI Technical Summary

Technical Problem

Conventional methods for mixing ground improvement materials with excavated soil in clayey, viscous ground result in lump formation and co-rotation, leading to uneven mixing and reduced quality of ground improvement.

Method used

A ground improvement device with a single shaft, mixing blades, and a co-rotation prevention blade, combined with a cylindrical stirring and mixing area ring, injects ground improvement material at high pressure to finely pulverize and homogenize the mixture, using S-shaped ring-internal stirring blades to prevent clump formation.

Benefits of technology

The method achieves uniform mixing of excavated soil and ground improvement material, ensuring high-quality ground improvement by efficiently crushing and mixing the soil within a cylindrical container.

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  • Figure 2026101447000001_ABST
    Figure 2026101447000001_ABST
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Abstract

The excavated soil after drilling the borehole can be efficiently crushed, and the crushed soil and ground improvement material can be mechanically mixed within the cylinder. [Solution] After excavating the drilling hole with the lower drilling and stirring blade 6, the excavated soil is crushed by the ring-type stirring blade 7, and the crushed soil and ground improvement material are mechanically stirred and mixed efficiently within the stirring and mixing area ring 5. This ensures uniform mixing of the ground improvement material and excavated soil, resulting in high-quality ground improvement. From the discharge holes 22, the ground improvement material is sprayed at high pressure into the stirring and mixing area ring 5 in a linear and / or planar manner, upward, sideways, and downward, finely crushing the ground improvement soil and enhancing the stirring effect.
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Citation Information

Patent Citations

  • JP1981153014A

  • JP1996170326A