Numerical Model Validation for Detection of Surface Displacements over Twin Tunnels from Metro Line 1 in the Historical Area of Seville (Spain)

In order to solve connectivity problems in metropolitan areas, the development of underground metro lines constitutes an unquestionable requirement. However, construction work thereof encounters unfavourable circumstances when surface excavations must be carried out that cross historical areas city, due need control movements. The design city Seville (Spain) from 2004 2006 provides a representative example this situation and triggered major upheavals exerted repercussions on buildings. For these reasons, excavation stages Line 1 have been simulated by numerical methods using FLAC3D software validated with results provided real conditions. Consequently, various settlements evaluated taking not only variates main parameters characterise soil Seville, but also load situations Notable achieved through calibration 54 variants same model corresponding 1, their comparison obtained nine critical itinerary. made it possible determine effects subsoil great accuracy, since percentage error calculated vertical movements varies 0.1% 5.3%.