...1. INTRODUCTION The international community has been investigating the suitability of deep geological disposal facilities for nuclear waste since the early 1970 s. These investigations have mainly focused on issues related to geochemistry, geo-hydrogeology, geology and geomechanics...

... caverns (the CLAB facility), an underground repository for the final disposal of low and intermediate reactor waste (the SFR facility) and is currently carrying out site investigations for siting of a repository for disposal of the spent fuel. The site investigations began in 2002 and will be completed...

... in tenns of strength properties of the rock mass. Geotechnical aspects of fault characterization and problems of investigating a tunnel in a fault zone arc discussed. It is demon- strated that a technical and economical optimization of construction can only be achieved by a flexible eon- tractual setup...

... tunnel 3 borehole specimen reservoir geomechanics Thickness marl investigation Reservoir Characterization support structure tunnel lining turmel Drilling observational method theoretical result lining permeablity girder Upstream Oil & Gas information diameter tunnel 1...

... investigation deep-seated slope deformation fracture characterization bedrock scarp paleoseismic technique evolution University deposit deformation Pacific Rocks 2000, Girard, Liebman, Breeds & Doe (eds) © 2000 Balkema, Rotterdam, ISBN 90 5809 1554 Analysis of deep-seated slope deformations...

... inactive rock quarries are deep, abandoned, water-filled pits with near-vertical walls. Reclaiming a quarry site or investigating a quarry bottom may require draining the quarry. However, rapid drawdown of the quarry water level may reduce the stability of the quarry walls to their lowest level ever...

... of this decision, which was published on 3 August 1999 (3), states for the MeuseIHaute-Mame laboratory that "the investigations and experiments in the un- derground laboratory are aimed to compile the nec- essary data for the design, optimization, retrievabil- ity and safety of a potential radioactive waste...

... ABSTRACT ABSTRACT: In any engineering geological site investigation, use of geophysical techniques based on the geological model is essential. Geophysical investigation along a tunnel alignment to predict the geological section has usually consisted of seismic refraction and electrical...

... be used in conjunction with slope stability software to identify slopes at-risk of failure, with relative ease. stability analysis composition application remittance permittivity investigation Upstream Oil & Gas reflectance slope angle geotechnical characterization loam cohesion...

... ABSTRACT ABSTRACT: This paper summarises the results of numerical studies on drift stability in moderately jointed rock masses. It investigates the relative pertinence of joint orientation, spacing, stress regime, etc. This is undertaken using a distinct element model and a series...

.... during the construction or during the operation of the plant). Reservoir Characterization calculation convergence Upstream Oil & Gas rock salt waste management salt dome borehole investigation rock mechanical activity stability structural geology Germany Disposal subsidence rock...

... ABSTRACT : The rock core and the boreholes of 7 drillsites, each one penetrating about 15 metres into the bedrock at a contaminated site, are used in a field and laboratory investigation of the fluid flow properties of the fractured orthoquartzite bedrock formation. Porosity and hydraulic...

... of results, received from investigations of the deformation and destruction processes in the close-in zone of underground nuclear explosions, is presented. It was shown, that the principle mechanism of failure of underground openings over important for practice dynamic loading amplitude range is the roof...

... galleries and an intensive programme of scientific investigation. All three phases integrate a range of scientific activities within construction. This paper describes the geotechnical data acquisition to be undertaken within Phase 1 of the proposed RCF. Geotechnical data are required to increase our...

... of such rocks. Generally, the experimental investigations were performed on transversely isotropic rocks (Donath 1972, McLamore&Gray 1969, Allirot and Boehler 1979, Niandou 1993, etc.). These investigations led to theories able to predict the dependence of strength on - the angle between the normal...

... & Gas dilation angle investigation experimental result continuously-yielding model shear response normal stress dilation shear stress shear displacement joint dilation Itasca Consulting Group dilation curve shear strength friction angle Rock Mechanics, Nelson & Laubach (eds) © 1994...

... ABSTRACT ABSTRACT: Rock indentation experiments in granite and marble are carried out using a hemispherical indenter. A thorough investigation of the indenting process is made and quantitative data of rock fragmentation and fracture obtained. A two dimensional micro-mechanics constitutive...

... cost. Upstream Oil & Gas hydraulic fracturing metals & mining gully stability sidewall closure stope face gully support geometry hangingwall requirement stope Mining Condition investigation gully geometry support system strike gully support unit design rationale...

... investigation to better identify the causes of the excessive seepage was initiated and a 3-D Finite Element seepage analysis was conducted. The ability to include cross-valley components of the water bearing rock units into the 3-D analysis provided a more accurate estimate of the seepage rates...