Open AccessValidation of Inundation Damage Reduction by a Pump Gate with the New Type of Horizontal Axial Submersible Pump
Author(s) -
Kentaro Fukumori,
Yu Kurita,
Hiroaki Furumai
Publication year - 2021
Publication title -
journal of disaster research
Language(s) - English
Resource type - Journals
eISSN - 1883-8030
pISSN - 1881-2473
DOI - 10.20965/jdr.2021.p0381
Subject(s) - axial flow pump , submersible pump , environmental science , water level , surface runoff , channel (broadcasting) , drainage , hydraulic pump , marine engineering , engineering , electrical engineering , mechanical engineering , reciprocating pump , ecology , cartography , biology , geography
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.