The Boom Clay layer, a tertiary plastic clay, was chosen as a study case for the geological disposal of high level and long-lived radioactive waste. For R&D purposes, the underground research facility HADES was constructed at a depth of 223m. The construction started in 1980 with the sinking of a shaft, and the facility was expanded several times since then. Construction techniques and the level of understanding of hydro-mechanical processes have very much evolved throughout the years. This paper describes the construction techniques used at HADES and focuses on the most recent extension. A 80m long gallery was constructed using industrial techniques and the excavation was accompanied by an extensive instrumentation and characterisation programme.
|Title of host publication||Proceedings of the 5th international conference of TC28 of the ISSMGE on Geotechnical aspects of underground construction in soft ground|
|Place of Publication||London, United Kingdom|
|State||Published - Jan 2006|
|Event||5th international symposium on geotechnical aspects of underground construction in soft ground - International Society for Soil Mechanics and Geotechnical Engineering (ISSMGE), Amsterdam|
Duration: 15 Jun 2005 → 17 Jun 2005
|Conference||5th international symposium on geotechnical aspects of underground construction in soft ground|
|Period||2005-06-15 → 2005-06-17|