Stress and Texture Investigations by Means of Neutron Diffraction
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Transcript of Stress and Texture Investigations by Means of Neutron Diffraction
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Stress and Texture Investigations by Means of Neutron Diffraction
Opening Remarks
Ove StephanssonSeismic Hazard and Stress Field
GFZ German Research Centre for GeosciencesPotsdam
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Characterization of an Area, Site for a Rock Engineering Project
Produce a 3-D model of the site and target area• Topography• Soil cover• Rock mass lithology• Structural geology• Hydrogeology• Geochemistry• Thermal properties• Rock mechanics • Rock stress
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Methodology forDevelopment of theFinal Rock Stress Model – FRSM of a Site and an Area
After Zang & Stephansson 2010
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World Stress Map of Europe, Edition 2008
http://dc-app3-14.gfz-potsdam.de/
After World Stress Map (2008)
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Stress Decoupling in Eastern Part of North German Basin
After Zang & Stephansson 2010
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Methodology forDevelopment of theFinal Rock Stress Model – FRSM of a Site and an Area
After Zang & Stephansson 2010
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Hydraulic fracturing equipmentof type Mesey
Courtesy by F Rummel
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Numerical stress modelling with distinct element code 3DEC for deep geological disposal of spent nuclear fuel at Forsmark, Sweden
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Angle-dispersive Neutron Diffraction
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Problems in Rock Stress Measurements where Neutron Diffraction can Contribute
• Rock anisotropy• Heterogeneity• Discontinuities e.g. microcracks• Residual stresses• Paleostresses• Kaiser effect• Volume effects• Influence of fluids
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The ConferenceStress and Texture Investigations by
Means of Neutron Diffraction, STI2011
Organized by GFZ, Potsdam and JINR
Is open
Welcome