Einsatz kombinierter Bohrverfahren zur Vorauserkundung mit digitalem Bohrdatenmanagement

Abstract

The purpose of exploration drillings in tunnelling operations is to investigate rock structure, geological composition of the rock, especially with regard to fault zones, and the identification and characterisation of water‐bearing zones. When determining the quality of exploration, the economic parameters must be taken into account. The application of combined exploration drilling methods allows the successful drilling of exploration drillings even in complex geotechnical and hydrogeological rock conditions. The concept provides the flexibility to switch between drilling systems and to realise probe measures tailored to the specific geology quickly and according to economic requirements. For successful exploration projects, documents and findings from past projects are used in the planning phase. The use of digital drilling data management offers enormous potential for optimising data evaluation. The determination of machine, equipment and the preparation of a drilling plan can thus be prepared much more specifically for the upcoming exploration. During execution, direct conclusions can be reached regarding e.g. drillability or drilling tool condition on the basis of the process‐oriented process analysis.