SPD Method - Vacuum Consolidation Method Utilizing Atmospheric Pressure -
This is a vacuum consolidation method that utilizes atmospheric pressure in combination with a plastic drainage method. 【Features】 ○ The improvement area is covered with an airtight sheet, and a vacuum device creates a vacuum state beneath the sheet to forcibly discharge water from the soft ground. ○ It can be applied even to soft ground where loading embankments cannot be constructed. ○ By not using loading embankments, it reduces the need for securing land for construction. ○ It is an economical method that shortens construction time by not using embankment materials or sand mats. Additionally, it eliminates the need for heavy machinery operations, making it an environmentally friendly method. ○ "GeoDrain" and "Nonal Drain" are used as vertical drainage materials, while "SB Drain" and "BSB Drain" are used as horizontal drainage materials. ● For other functions and details, please contact us.
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basic information
This is a vacuum consolidation method that utilizes atmospheric pressure in combination with a plastic drain method. (NETIS Registration Number: CB-070012-A) 【Features】 ○ The improvement area is covered with an airtight sheet, and the area beneath the sheet is placed under vacuum using a vacuum device to forcibly discharge water from the soft ground. ○ It can be applied even in soft ground where loading embankments cannot be constructed. ○ Since it does not use loading embankments, it reduces the need for securing land for construction. ○ It is an economical method that shortens construction time by not using embankment materials or sand mats. Additionally, it eliminates the need for heavy machinery operations, making it an environmentally friendly method. ○ "Geo Drain" and "Nonal Drain" are used as vertical drain materials, while "SB Drain" and "BSB Drain" are used as horizontal drain materials. ● For other functions and details, please contact us.
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Applications/Examples of results
【Application】 ○ Soft ground improvement ○ Reduction of landfill volume 【Achievements】 ○ Japan Sewerage Agency (Purification Center Construction) ○ Land Readjustment Association (Land Readjustment Project) ○ Ibaraki Prefecture (Small Waterway Construction) ○ Railway and Transport Support Organization (JR Vehicle Base) ○ Overseas (Road Improvement Construction) This is an improvement method that takes into consideration the surrounding environment without using load-bearing embankments. Recently, it is expected to be applied to volume reduction work aimed at extending the life of final disposal sites.
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