93. june 9 overview mont terri project birkholzer
TRANSCRIPT
Used Fuel Disposition Campaign International Collaboration in Disposal Research: Mont Terri Project Jens Birkholzer Lawrence Berkeley National Laboratory FCT UFD Working Group Meeting “International Session” UNLV, Las Vegas, NV 06/9/2016
Used Fuel Disposition
Mont Terri Project
International research project for hydrogeological, geochemical, and geotechnical studies in a clay/shale formation
Access to experimental data from one URL in clay/shale host rock, with many past, ongoing and future experiments addressing various FEPs
Opportunity to participate directly in international research groups that conduct, analyze, and model experiments
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HE-E Heater Test: Focus on THM effects, bentonite rock
interaction, seal and clay barrier performance Micro-tunnel Monitoring starts in Spring 2011 Same location as previous ventilation
experiment
MB (Mine-by) Test: Focus on HM effects, EDZ evolution Full-scale tunnel Monitoring phase completed
FE Heater Test: Focus on THM effects, validation of
various bentonite/clay performance processes
Full-scale tunnel Monitoring starts in Spring 2012
Opportunity for conducting own experiments
Very good experimental support by swisstopo and contractors
DOE joined the DECOVALEX project in July 2012
Major current or soon-to-be started experiments
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Mont Terri Project: Phase 21 Activities (July 2015 – June 2016)
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CI: Cement Clay Interaction
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Investigation of interaction between cement, bentonite and opalinus clay
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HG-A: Gas Leak-Off Test (Supports EU Project FORGE)
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Measurements and predictions of fluid / gas flow in the tunnel nearfield after backfilling (re-consolidation, mechanical and chemico-osmotic self-sealing)
Site instrumentation:HG-A2, HG-A3 Multipacker systemsHG-A4, HG-A6 Deflectometer chainsHG-A5, HG-A7 Inclinometer chainsHG-A8 to A13 MinipiezometersSG1 to SG22 Strain gagesHG-EH, HG-EV Horizontal/vertical
extensometer
HG-A3
HG-A7
HG-A13
HG-A8HG-A4
HG-A5HG-A2
HG-SGHG-EH
HG-EVMicrotunnel:- length: 13 m- diameter: 1 mEquipped with more than 20 observation boreholes
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DR-B: Long-Term Diffusion Experiment
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Develop monitoring methodology for and conduct measurements allow of the diffusion of radionuclides over longer periods (> 10a)
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20-Year Anniversary of the Mont Terri Project: May 19, 2016
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Planned Extension of Rock Laboratory in 2018 to 2019 Timeframe
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• Significant addition for new experiments
• Most of the construction cost covered by Swiss partners