Department of Civil Engineering
Prevention and Mitigation for Seismic DisasterYasuyuki HIROSE

Associate Professor, Ms. Eng. (Civil Engineering)
Email : hirose@gifu-nct.ac.jp
Research Fields
Keywords

City Planning, Earthquake Engineering
Disaster Prevention, Disaster Mitigation, Aseismic Engineering● Research Outline
Measures of Prevention and Mitigation forSeismic Disaster
Within 30 years, the probability to suit a fire is1.9%, and the probability of a traffic fatal accident is0.2%. As comparison of figure-1, we can understandthat it is by no means low also as 3% of a probability ofoccurrence of an earthquake, for example. Moreover,even if the probability of occurrence of an earthquake is
not high, the damage will become serious once anearthquake occurs. And much labors and time areneeded for restoration or revival.
The seismic disasters cause serious damage toinfrastructures especially also in the natural disasters.
For the countermeasure of prevention and mitigation forflow in the future, the measure of regionala disaster
restoration under those hazard is considered carefully.
Surveillance study is carried out about theearthquake as follows:•The Southern Hyogo prefecture earthquake in 1995

•Mid Niigata Prefecture Earthquake in 2004

•Noto Hanto Earthquake in 2007•

The Niigataken Chuetsu-oki Earthquake in 2007

•The 2011 off the Pacific coast of TohokuEarthquake

As a result, it is cleared that the municipality is notsetting up the refuge in consideration of the populationand the number of evacuees. It is said that themunicipality should forecast the number of evacuees
and they should examine the installation of the refuge
based on it, because the failure of these earthquake isnever repeated. Then, it is proposed that examination
technique of the best in refuge arrangement andtechnique of optimization of number of users. So thesetechnique are tried and evaluated as case study about
center zone in Gifu city.

Development of Disaster Information
SystemWhen a disaster occurs, it is necessary to takecorresponding for residents evacuation and recovery
infrastructures. So it is important to carry out as soon as
possible to collect, judge and outgoing the disaster
information, including the damage situation.
To solve this problem, disaster prevention
information system using web has been developed.
Points to be considered are as follows. Widely residents
can be registered disaster prevention information.
Departments of government is sorting the information.
Visible to people in need of information.

In addition, damage evaluation of earthquake
disasters is considered from the analysis and an
experiment of earthquake-proof and a vibration control
model as dynamic approach.
In the stricken area, we are active for investigation,
restoration and reconstruction assistance in cooperation
with inhabitants,
NPO, administration, etc. as a social
flowsystem.
In the Southern Hyogo prefecture Earthquake andTohoku Earthquake, lots of evacuee people grew.
However, the refuge that the municipality had specified
was not able to accommodate all evacuees. And a lot ofevacuees to live in the park and the plaza grew.
Recognizing this fact, the hearing to examine arecarried out whether the refuge is enough secured fromthe evacuee by large scaled earthquake, in Gifu City.

Fig-1. Screen of the iOS application
Disaster prevention information systemdeveloped in collaboration with Gifu Prefecture