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  Settlements due to the Excavation of Shafts in São Paulo

  This work presents a study of the settlements registered during the excavation phase in several shotcrete supported shafts built by the São Paulo Metropolitan Company - Metrô (CMSP). Using data present in SACI: monitoring system and iterative control of instrumentation of the CMSP software, a statistical analysis and a methodology to estimate settlements are presented. The shafts under study are built with the Sequential Excavation Method taking full advantage of the arch effect of the ground, furthermore the shafts have different diameters, depth and are built in distinct geological scenarios that cover the main spectrum of the type of shaft built by the CMSP and many others Metro system all around the world.

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