Fresno de Rodilla tunnel is part of the High Speed Railway from Madrid to País Vasco. This rail tunnel, which has a length of 5.250 m and twin tube type, is designed so that trains can run at a speed of 270 km/h with an aerodynamic section of 52 m2. The tunnel will be excavated in marly claystones and marls with gypsum alternancies. The maximum overburden is 100 m and the construction method used has been fully mechanized by using of EPB (Earth Pressure Balanced) with pre-cast concrete segments. Finally, in order to allow a safety evacuation in case of emergency, cross passages have been designed every 500 m.

1. Proyecto Constructivo del tunel de Alta Velocidad Fresno de Rodilla. España.
Detailed engineering of the High Speed Railway tunnel of Fresno de Rodilla.
Spain
El túnel de Fresno de Rodilla forma parte de la línea de alta velocidad Madrid-País Vasco. Este túnel
ferroviario, que posee una longitud de 5.250 m, es de tipología bitubo y está diseñado para que los
trenes puedan circular a una velocidad de 270 km/h. con una sección aerodinámica de 52 m2
.
Los terrenos a atravesar son lutitas margosas y margas con alternancia de yesos y el recubrimiento
máximo son 100 m.
El método constructivo a emplear para la ejecución del túnel será completamente mecanizado mediante
elempleodeunaEPB(EarthPressureBalanced)consistiendoelsostenimientoendovelasprefabricadas.
El túnel cuenta además con galerías de conexión que unen los dos tubos para permitir la evacuación en
caso de emergencia.
Fresno de Rodilla tunnel is part of the High Speed Railway from Madrid to País Vasco. This rail tunnel, which has a length of
5.250 m and twin tube type, is designed so that trains can run at a speed of 270 km/h with an aerodynamic section of 52 m2.
The tunnel will be excavated in marly claystones and marls with gypsum alternancies. The maximum overburden is 100 m and
the construction method used has been fully mechanized by using of EPB (Earth Pressure Balanced) with pre-cast concrete
segments.
Finally, in order to allow a safety evacuation in case of emergency, cross passages have been designed every 500 m.
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