Location: Niigata, Niigata Prefecture
Drainage capacity: 240 m3/s
Six tubular pumps with an adjustable-blade axial flow with a pump diameter of 4,200 mm
Supplied one of Japan’s largest horizontal pumps
Located in the center of the Niigata Plain, Nishikanbara Plain is one of the largest granaries in Japan, with a total area of approximately 36,000 hectares. Because this area is a swampy lowland, it was at constant risk of overflow due to poor drainage and flooding.
For this reason, the Shinkawa-kako Drainage Pump Station was built to reduce the water level of the Shinkawa River, with the aims of improving drainage of subsided farmland and achieving stable agricultural production and management.
<b>Highly difficult work</b>
To ensure the drainage function of the pump station, we removed each of the six pumps one at a time and installed new pump to replace them. This work was performed between October and May during non-flooding periods, when the water level of the river does not rise.
<b>Improving functionality</b>
Employing its proprietary flow analysis technology, EBARA achieved the improvement of efficiency at large flow rates from the design flow volume (volume of water forecast to flow in).
4.2-meter diameter impeller drains water at 240 m<sup>3</sup>/s.
Impeller in pump casing drains large volumes of water.