High pumping capacity! Comparison of the Super Well Point Method and other groundwater lowering methods.
This document compares three groundwater lowering methods: the "Super Well Point Method," the "Deep Well Method," and the "Well Point Method." It provides detailed information on each method, including an "Overview Diagram," "Principles (Pumping Methods)," and "Advantages and Disadvantages." The Super Well Point Method is effective not only for lowering groundwater levels but also for countermeasures against bulging, promoting consolidation, and landslide prevention. It is often adopted as a widespread groundwater lowering method for facilities such as adjustment ponds. We encourage you to read it. [Contents] ■ Methods (Division of Functions) ■ Overview Diagram ■ Principles (Pumping Methods) ■ Supplementary Principles ■ Advantages and Disadvantages *For more details, please refer to the PDF document or feel free to contact us.
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**Main Advantages and Disadvantages** ■ Super Well Point (SWP) Method - High pumping capacity allows for lowering groundwater levels with fewer points. - Even with lowered water levels, water collection continues due to negative pressure, allowing for shallower well installation. - Groundwater level decline is relatively advanced even in cohesive soils like silts with low permeability coefficients. ■ Well Point (WP) Method - Forced drainage utilizing negative pressure is efficient for lowering water levels, but the amount of water level decline is around 3.5 meters. - Installation spacing is typically 0.8m to 2.0m, with a water intake capacity of about 20L/min per point. - If air is drawn through the gap between the riser pipe and the ground, capacity decreases. ■ Deep Well (DW) Method - Good workability and easy maintenance, but generally not applicable for permeability coefficients below 10^-3 cm/sec. - Even within the applicable range, in low permeability ground, the number of wells increases due to their water collection capacity, requiring a long time for water level decline. *For more details, please refer to the PDF document or feel free to contact us.*
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For more details, please refer to the PDF document or feel free to contact us.
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We are actively engaged in development, design, research, and construction work related to ground improvement projects, focusing on methods for lowering groundwater levels.