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  Caracas Line 5 maximising potential of EPB shield technology in extreme urban conditions

  Metro Caracas Line 5 is a successful representative case of urban shield tunnelling where challenging situations were overcome by maximising the capacities of EPB shield technology and without the execution of additional ground treatments. The paper presents different case studies of shield drives under buildings and bridge foundations in soils. The approach followed for the calculation, control and minimisation of settlements in urban area in order to successfully overcome these situations is also presented.

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