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  Rio de Janeiro Metro – Vibrations due to blasting in urban environment

  Rio de Janeiro Metro Line 1 is being connected to Line 4 and the excavations include several tunnels of different sizes, all of them excavated using drill and blast methodology. The vibrations due to blasting are continuously monitored, to control and, if necessary, adjust the blasting activities to levels compatible with the urban environment of Copacabana. The paper presents blasting data and associated vibration measurements, showing the relative compatibility with empirical correlations. Finally, some adjustments in the empirical coefficients are proposed.

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