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DPRI Seminar - Urban Flood Prediction and Measures - the Global COE Program "Global Center for Education and Research on Human Security Engineering for Asian Megacities"

Date: July 27, 2010
Venue: E320-D, Disaster Prevention Research Institute, Kyoto University

Organized by:
- Disaster Risk Management Group (DPRI)
- Kyoto University Global COE Program "Global Center for Education and Research on Human Security Engineering for Asian Megacities"

Number of attendants: 30



Recently, in Asian countries, urban flood disasters seem severer with the urbanization and the climate change and associated extreme weather. Now, the development of accurate prediction methods on urban flood and suitable countermeasures against it are very important tasks from the point of view of disaster prevention and reduction.
In this seminar, several recent studies related to urban flood disasters are introduced and we discuss their prediction methods and suitable countermeasures.


In the seminar, three presentations were conducted by Prof. Ishigaki, Prof. Kawaike and Prof.Toda.
Prof. Ishigaki gave us a kind of keynote lecture whose title was "Urban drainage system, underground inundation and evacuation in extreme flood". First, he introduced the characteristics of recent urban floods in Japan. Next, he showed recent experimental researches on evacuation by use of full scale models of staircase, door and car, and demonstrated the importance of prompt and suitable evacuation. He also mentioned about the difficulty of evacuation by aged people. In addition, he introduced the simulation results of underground inundation caused by heavy rainfall in Umeda, Osaka, Japan. Prof. Kawaike made the presentation on "Recent study on inundation simulation due to heavy rainfall in urban area". He explained about the outline of his integrated simulation model of urban drainage system, and he introduced the recent progress in his modeling. He also introduced the recent experiment results on rainfall water behavior in a sewer system and their simulation results. Prof. Toda made the presentation on "Flood hazard analysis by heavy rainfall in a small river basin in Japan". He showed an integrated river basin model comprising a runoff model and a 2-D inundation flow model. By imposing various patterns of rainfall distribution of short durations, he examined if an inundation occurs or not, and if it occurs how severe it becomes. He also showed a rainfall-inundation diagram.
We had a very good discussion after each presentation. Many graduate students including foreign students who study at DPRI joined the seminar. Foreign students seem very interested in the recent researches on urban flood.
Several engineers and one manager who work at private companies also participated in the seminar.

Left: Participants in Seminar at DPRI
Right: Evacuation Experiment by Use of Door Model (from Prof. Ishigaki's keynote lecture)