Study of flood vulnerability of motorized society and its countermeasures

2014 Fiscal Year Final Research Report

• Project/Area Number: 23310109
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Social systems engineering/Safety system
• Research Institution: Kyoto University
• Principal Investigator: TODA Keiichi 京都大学, 経営学研究科, 教授 (70273521)
• Co-Investigator(Kenkyū-buntansha): ISHIGAKI Taisuke 関西大学, 環境都市工学部, 教授 (70144392) ; YONEYAMA Nozomu 京都大学, 防災研究所, 准教授 (90371492) ; KAWAIKE Kenji 京都大学, 防災研究所, 准教授 (10346934) ; BABA Yasuyuki 京都大学, 防災研究所, 准教授 (30283675) ; OKAMOTO Takaaki 京都大学, 工学研究科, 助教 (70599612)
• Co-Investigator(Renkei-kenkyūsha): OZAKI Taira 関西大学, 環境都市工学部, 准教授 (40351499)
• Project Period (FY): 2011-04-01 – 2015-03-31
• Keywords: 都市水害 / 漂流車 / 水没車 / 避難実験 / 水理実験 / 氾濫解析 / 流体力 / 自転車

Outline of Final Research Achievements

In flooding, low-lying streets and underpasses are common sites of accidents with submerged cars. In the case flooding is severe, cars are floated and flushed away. We executed two main research activities on car problems, namely, (1) experiment study of evacuation from a partially submerged car, and (2) experiment study of incipient floating motion of car in flooding.
(1)Evacuation experiments were conducted by using a real-size car model. A small minivan with a slide type rear door was used. The experimental results indicate that the water depth of about 0.75 m is the critical evacuation condition through the slide type door. (2) The critical incipient condition was studied experimentally, using the 1/10 and 1/18 scale car models. On the base of experimental results, we could draw the diagram of critical incipient condition of real car by both flow velocity and water depth. Sedan typed cars are likely to be floated if the flow velocity exceeds 2m/s and the water depth exceeds 0.5m.

Free Research Field

防災水工学