Geological and geotechnical studies and subsidence analyses for Horizontal Directional Drilling (HDD)

The work involved a geological and geotechnical characterisation of the ground along the drilling routes, as well as an analysis of potential subsidence issues associated with the execution of the Horizontal Directional Drilling (HDD) works. Based on this assessment, technical criteria and design constraints were defined with the aim of minimising risks during construction and ensuring the feasibility of the works.