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  SSS.infra approach to assess and mitigate the risks related to an extreme weather condition

  The increasing and worldwide diffusion of extreme weather events is responsible for disasters and severe losses every year, including damages to infrastructures. For this reason, weather- related hazards must be accurately considered during the risk assessment phase. This study presents the analysis of a complex hydrogeological and geomorphologic situation encountered along the new railway alignment in the province of Djelfa, Algeria. The proximity of a wadi, an ephemeral stream, could lead to a high risk of flooding and erosion in case of heavy rainfall. To mitigate the hazardous consequences, a multi-criteria analysis based on Safe performance, Suitable integration and Source control has been developed. According to, it has been decided to change the original design and replace the predicted trench with a tunnel. This paper give proof of the effectiveness of an underground solution for facing an unconventional surface challenge.

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