Impacts des inondations historiques sur un réseau de transport : exemple des installations et des circulations ferroviaires en France

Abstract

PosterFor the past two centuries, floods have led to serious damage on the railway network and its operation. Taking into consideration extreme floods in conception, maintenance, risk management for railway infrastructures is one of the current issues of the SNCF. SNCF archives about historical data related to flood events which have impacted the railway network are abundant but scattered around the country and unexploited. Gathering those data about floods and damages on railway in France caused by extreme flooding phenomenon is essential for the evaluation and better understanding of the risk. Indeed, this analysis of flood risks would enable its anticipation by setting up an appropriate surveillance, but also to manage the risk on the rail traffic, during and after the event, and finally to improve the network operation. Moreover, a space-time representation of data would present a consistent and chronological vision of events and would enable to determine socio-economic impact of those extreme events. The aim of the collaboration between SNCF and the SARDO SNCF, the BDHI team, IRSTEA, the LIG and ACHTYS Diffusion is on one hand to set up a methodology of flood data identification and assessment that can be found on the SCNF archives and, on the other hand, to develop an innovative work tool for space-time visualisation of historical events. That would enable to enlarge the floods consequences analysis from railway infrastructures damages to socio-economic impacts induced by transport network stakes. This tool will enable to optimize railway maintenance and railway traffic management costs according to the risks, in order to optimize the network operation