<b>Study on Method to Evaluate Geo-disaster Risk during the Snowmelt Season</b>

Abstract

To development a method for evaluating geo-disaster risk during the snowmelt season, changes in ground water levels were monitored under a cut slope in a snowfall area. Monitoring clarified that during the year the instability of slopes subject to prolonged exposure to snowmelt water was highest due to rising groundwater levels. Based on this insight, a risk evaluation method was developed based on the effective snowmelt index correlated with ground water behavior.