On the role of the Engineering Geologist in the Construction Phase of Challenging Tunnel Projects
Independently, if hardrock or soil conditions, conventional or mechanized tunnelling - the role of the engineering geologist as an „interpreter“ of the naturally formed subsurface conditions is undergoing significant changes in the course of the planning and realization process of any tunnel project. Even with the most detailed and most competent site investigation risks for adverse subsurface conditions will still remain. The remaining uncertainties regarding ground behaviour and the interaction of ground and structure and the implied risks for the technical and contractual aspects of underground construction do indeed require further involvement of engineering geological expertise in the course of project realization. The proposed paper is intended to analyse the roles and tasks for engineering geologists involved in a tunnelling project either as a representative of the builder / client, the authorities or the contractor.