Suggestion of Safety Standards in Railway Slopes

초록

Monitoring systems have been widely constructed in railway slopes. Safety standards of slopes are restricted by safety factor in dry season or rainy season in Korea. But it is not sufficient to secure safety of slopes. Safety factor which is results from the limit equilibrium analysis is varied by various external conditions. And because it has no reflection point, it is very difficult to manage the safety of trains. Safety management such like warning sign, reduce speed and train stop is the best choice to reduce the damage of slopes where it is worried about occurrence of disasters. In this study, additional index is proposed to support present safety standards based on unsaturated soil mechanics and reliability analysis. Additional index is velocity of failure probability. It has an apparent reflection point near present safety standards. So it is possible to modify the standards for safety management and monitoring system of slopes by using this index.