Rock Mechanical and Geotechnical Characterization of a Granitic Formation Hosting the Hungarian National Radioactive Waste Repository at Bataapati

Construction of a radioactive waste disposal should have a wide-range investigation and design program. It is important to suit the design, construction and monitoring tasks of the underground facilities to the rock mechanical-geotechnical character of the host rock in many aspects, such as the long-term environmental and radiological safety, the safety requirements at the workplace and economical reasons. The gained information enables the optimization of the advance and support systems. Getting to know the behaviour of the surrounding rock mass has a great importance in case of a radioactive waste repository, as the geological barrage is one of the main elements of the safety system. So the in situ measurement is not just important for the static safety during the work phase, but it is the element of the long-term safety system, too. It helps to recognize the changes in the environment and interfere if needed.