Paper on the SKK Method

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last updated：Feb 20, 2015

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Improvement of soil quality in soft excavation soil using the gap water suction method (SKK method).

The "Tajiri District Drainage Channel No. 3 Construction" is a project to construct a road tunnel with an excavation length of 134 meters, located in the Tajiri Takaya area of Ichikawa City, Chiba Prefecture, near the Tokyo Metro Tozai Line. The tunnel will be built using an open-cut method with an excavation width of approximately 30 meters and a depth of about 15 meters. Due to concerns about insufficient trafficability and worsening construction conditions during soil removal, the project employs the SKK method, which combines the Super Well Point (SWP) method with suction pipes to improve soil quality by extracting pore water and underground air from the soft ground, thereby addressing these issues. The "Paper on the SKK Method" reports the results of confirming the applicability of the SKK method for soil improvement through trial construction and actual construction. [Contents] - Overview of the SKK Method - Confirmation of soil improvement effects through on-site trial construction - Application results of the SKK Method (verification in actual construction) For more details, please contact us or download the catalog.

Related Link - http://www.asahitechno.jp/

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【Contents】 ○Introduction ○Overview of the SKK Method →Overview of the SKK Method (Principle of Soil Improvement) →Effect of Moisture Ratio Reduction by Air Suction in the Ground ○Confirmation of Soil Improvement Effects through On-Site Testing →Overview of On-Site Testing →Results of Soil Improvement Confirmation →Characteristics of Surface Displacement (Settlement) due to SKK Operation ○Results of SKK Method Application (Verification through Actual Construction) →Confirmation of Soil Improvement Effects through Visual Inspection →Confirmation of Soil Improvement Effects ○Conclusion →By implementing soil improvement using the SKK Method, the trafficability of soft alluvial clay was secured and the workability of excavated soil removal was improved. →The application of the SKK Method contributed significantly to cost reduction, including the omission of preliminary ground improvement and the suppression of cement-mixed soil generation (reduction of waste disposal costs). ●For more details, please contact us or download the catalog.