Underground research laboratories

Ga.scoyne, M. 1989. High levels of uranium in ground-waters at Canada s Underground Research Laboratory, Lac du Bonnet. Manitoba, Canada. Applied Geochem. 4 577-91. 

A DISCRETE APPROACH TO MODELLING HYDROMECHANICAL ROCK RESPONSE OF FEDEX TUNNEL EXCAVATION (GRIMSEL UNDERGROUND RESEARCH LABORATORY, SWITZERLAND)... 

A large scale in situ heating test is being performed at the Grimsel Test Site, an underground research laboratory located in the Swiss Alps. The rock in the site is mainly granite. The test tries to... 

Geomechanical investigation plan in an underground research laboratory for feasibility study of radioactive waste repository in deep argillaceous rock - International Conference on Tunnels and Underground Structure (ICTUS), Singapour, 26-29 November 2000. 

Geomechanical investigation programme in the Meuse/Haute-Mame underground research Laboratory - International Workshop on Hydromechanical and thermohydromechanical behaviour of deep argillaceous Rock, pp.229-238 Paris, October 2000. 

In the AECL URL (Underground Research Laboratories) Drawdown Experiment Program,... 

Hydrogeological characterization, modeling and monitoring of the site of Canada s Underground Research Laboratory. Atomic Energy of Canada Limited report, AECL-8676. 

Large scale experiments in underground research laboratories, (SKB, 1993, Huertas et al., 2000), have played an important role in demonstrating full scale behaviour. Such experiments have become a key component of a number of extensive programmes of research investigating various aspects of behaviour. Additionally they serve as major sources of data for use in numerical model validation and development. 

The experiment involved placing a 0.6m diameter 2.2m long heater in a 1.24m diameter and 5m deep borehole at the 240 m Level of AECL s Underground Research Laboratory. The heater was surrounded by a 50 50 bentoniteisand buffer. The experiment was operated by AECL over the period 1991 - 1994, (Graham et al., 1997). 

The experiment, as for the Buffer/Container Experiment, was based on a 1.24 m diameter 5 m deep borehole at the 240 m Level of AECL s Underground Research Laboratory. A 50 50 bentonite sand buffer was compacted to a depth of 2m into the base of the borehole, (Chandler, 2(XX), Dixon et al., 2002). A 1.25 m thick concrete plug was then installed above the buffer to act as a vertical resistance to any swelling that might occur. The granite rock around the experiment could be considered to be un-fractured and nearly saturated, (Chandler, 2000). The layout of the experiment is shown in Figure 1. 

Dixon, D.A., Chandler, N. Graham, J. Gray, M.N. 2002. Two large-scale sealing tests conducted at Atomic Energy of Canada s underground research laboratory the buffer-container experiment and the isothermal test. Canadian Geotechnical Journal 39(3) pp. 503-518... 

Thomas, H.R., Cleall, P.J., Chandler, N Dixon, D. Mitchell, H.P. 2003. Water infiltration into a large-scale in-situ experiment in an underground research laboratory. 

In this section, an application of the proposed models is presented. The case studied here is in connection with the future construction of an underground research laboratory for nuclear waste disposal in a claystone formation. The main purpose is to evaluate the desaturation-resaturation process around the excavation during the excavation and the consolidation phases with different rheological laws. Special attention is given to the dilatancy phenomenon that influences the saturation. 

The disposal program in Japan is currently in the R D phase. Japan is using two mines as undergrotmd research laboratories for conducting research on the geomechanical aspects of repository behavior. Two new underground research laboratories, in hard and soft rock, ate being considered. 

Martin and Young [1993] Underground research laboratory, Canada 50 m 16 triaxial accelerometers 3,500 in 10 months 20 kHz to 1-2... 

Yaramanci U (1991) Hochfrequente Mikroseismizitat im Steinsalz der Asse um den 945-m-Bereich (in German). GSF Report 32/91, Neuherberg Young RP, Collins DS (2001) Seismic studies of rock fracture at the Underground Research Laboratory, Canada. Int J Rock Mech Min Sci Geomech 38 787-799... 

Underground research laboratory Ultrasonic test or irltrasonic testing Velocity spectral analysis Virtual reality modeling language Wireless sensor network... 

Martino, J.B., Chandler, N.A. 2004. Excavation— induced damage studies at the Underground Research Laboratory. International Journal of Rock Mechanics and Mining Sciences 41(8) 1413-1426. 

Mizunami Underground Research Laboratory, 1 -64 Yamanouchi, Akeyo-... 

Dr Teruki Iwatsuki, Mizunami Underground Research Laboratory, 1-64 Yamanouchi, Akeyo-Cho, Mizunami-Shi, Gifu 509-6132 INC, Japan. Phone +81 572 662244, Fax +81 572 662245. 

Current planning for the development of a deep geological repository includes the construction and operation of an underground research laboratory starting in 2030 and the operational start-up of the deep geological repository by 2050. 

Research activities in this field, especially in those countries which consider crystalline rock as repository host rock and perform research activities in Underground Research Laboratories... 

Many non-DC earthquakes occurred in association with the excavation of a 3.5-m-wide tunnel in unfractured, homogeneous granite at the Underground Research Laboratory in Manitoba, Canada (Feignier and Young 1992). Moment tensors computed for 33 earthquakes with Myy —2 to —4 include tensile, implosive, and shear mechanisms. Some were associated with breakout on the tunnel roof, and others occurred ahead of the active face. 

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