Open AccessScenario Analysis of Sluice Gate Operations for Evaluating Inland Flood Damage
Author(s) -
Hiromichi Muroi,
Kensuke Mine,
Yoshiki Eguchi
Publication year - 2021
Publication title -
journal of disaster research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.332
H-Index - 18
eISSN - 1883-8030
pISSN - 1881-2473
DOI - 10.20965/jdr.2021.p0429
Subject(s) - sluice , typhoon , flood myth , flooding (psychology) , environmental science , hydrology (agriculture) , sewerage , precipitation , water resource management , environmental engineering , geology , meteorology , geotechnical engineering , geography , psychology , archaeology , psychotherapist
Typhoon Hagibis, which hit Japan directly on October 12, 2019, caused great damage, including the flooding of rivers, across various parts of Japan. The Tama River, which flows north of Kawasaki City, also experienced flooding which exceeded the designed high water level; although it did not cause fluvial flooding, river water flowed into the urban areas through the sewerage system, causing unprecedented inundation damage. This damage was reproduced with the inland flood simulation model. Furthermore, we performed simulations in which the water level, precipitation, and sluice gate operation of the Tama River differed from actual conditions, and compared them with the actual damage. Based on these results, we examined methods for reducing inundation damage, such as improving the operation method of sluice gates, and confirmed their effects.