Ground improvement work Deep mixing method "Expanded and Contracted Column Method"
Simultaneous forward and reverse rotation using a double-tube structure of the rod! A new ground improvement method utilizing an expansion and contraction technique.
The "Expansion and Contraction Column Method" is a deep mixing treatment method characterized by its expansion and contraction mechanism and simultaneous rotation mechanism in both directions. By using the expansion and contraction method, it is possible to improve the ground by reducing the diameter of the excavation area and increasing the diameter of the improved area, allowing for the proper use of solidifying materials and a reduction in excavation time, resulting in reliable and economical construction. 【Features】 ■ The amount of excavated soil in the excavation area is less than 1/4 of that of conventional methods. ■ The excavation head and mixing wings can be expanded and contracted. ■ Simultaneous rotation in both directions due to the double pipe structure of the rod. ■ Centralized management system for the expansion and contraction column. ■ Large diameter column with diameters ranging from φ1,200mm to φ2,000mm. ■ Use of general-purpose machinery for the base machine. *For more details, please refer to the catalog or feel free to contact us.
basic information
【Machine Specifications (Partial)】 ■Heavy Machinery: DH-558 (120t class) ■Mixing Shaft: Double Pipe Method (Inner Pipe Rod, Outer Pipe Rod) ■Excavation Mixing Section ・Excavation Head: 3 Wings ・Mixing Wings: 4 Wings ・Expansion and Contraction Mechanism ■Solidification Material Silo ■Solidification Material Plant ■Grout Pump ■Water Tank *For more details, please refer to the catalog or feel free to contact us.
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Applications/Examples of results
【Applications】 ■ Base improvement in excavation for earth retention ■ Foundations for water tanks and buildings ■ Prevention of sliding failure in embankments, etc. ■ Construction of impermeable walls, etc. *For more details, please refer to the catalog or feel free to contact us.
