Validation of Inundation Damage Reduction by a Pump Gate with the New Type of Horizontal Axial Submersible Pump
Kentaro Fukumori*,, Yu Kurita**, and Hiroaki Furumai***
*Business Planning Section, Business Promotion Department, Pump & Jet Division, Ishigaki Company, Ltd.
1-6-5 Marunouchi, Chiyoda-ku, Tokyo 100-0005, Japan
**Overseas Sales Section, Business Promotion Department, Pump & Jet Division, Ishigaki Company, Ltd., Tokyo, Japan
***Research Center for Water Environment Technology, School of Engineering, The University of Tokyo, Tokyo, Japan
Compared to pumping stations, pump gates have small sites and are constructed for a low cost over a short period of time. A new type of horizontal axial submersible pump that is optimal for pump gates has recently been developed. Since the new type of pump can be operated at full speed regardless of water level, it is possible to conduct standby operations in preparation for stormwater runoff inflows. In a simulation comparing the conventional pumps and the new type of pump, there was no serious inundation condition in the new pump up to 70 mm/h, which is 140% of the design’s rainfall intensity. As a result, it was clarified that standby operations can keep the peak water level low and maximize the water storage capacity of the drainage channel.
-  Japan Institute of Wastewater Engineering and Technology (JIWET), “Annual Report of JIWET 2017,” 2017 (in japanese).
-  T. Okamura and K. Kamemoto, “CFD Simulation of Flow in Model Pump Sumps for Detection of Vortices,” 8th Asian Int. Fluid Machinery Conf., 2005.
-  Japan Sewage Works Agency, “All Speed / Water Level Type Horizontal Submersible Pump,” https://www.jswa.go.jp/e/rd/02_ip/pdf/ip_24.pdf [accessed September 16, 2020]
-  L. Besseling, “Validity assessment of D-Hydro Urban: comparing D-Hydro with Infoworks ICM in a Beverwijk sewer modelling study,” 2020, http://essay.utwente.nl/85016/1/Besseling-Leon.pdf [accessed December 1, 2020]
-  J. Yazdi and J. H. Kim, “Intelligent Pump Operation and River Diversion Systems for Urban Storm Management,” J. of Hydrologic Engineering, Vol.20, No.11, doi: 10.1061/(ASCE)HE.1943-5584.0001226, 2015.
-  A. Shimpo et al., “Primary Factors behind the Heavy Rain Event of July 2018 and the Subsequent Heat Wave in Japan,” Scientific Online Letters on the Atmosphere, Vol.15A, pp. 13-18, doi: 10.2151/sola.15A-003, 2019.
-  Y. Shibuo et al., “Development of Operational Realtime Ensemble Flood Forecast System,” J. of Japan Society of Civil Engineers Ser. B1 (Hydraulic Engineering), Vol.70, No.4, pp. I_397-I_402, doi: 10.2208/jscejhe.70.I_397, 2014 (in Japanse with English abstract).
-  Y.-M. Chiang et al., “Auto-control of pumping operations in sewerage systems by rule-based fuzzy neural networks,” Hydrology and Earth System Sciences, Vol.15, No.1, pp. 185-196, 2011.