Stress and Texture Investigations by Means of Neutron Diffraction Opening Remarks Ove Stephansson Seismic Hazard and Stress Field GFZ German Research Centre.

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Presentation transcript:

Stress and Texture Investigations by Means of Neutron Diffraction Opening Remarks Ove Stephansson Seismic Hazard and Stress Field GFZ German Research Centre for Geosciences Potsdam

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

Methodology for Development of the Final Rock Stress Model – FRSM of a Site and an Area After Zang & Stephansson 2010

World Stress Map of Europe, Edition After World Stress Map (2008)

Stress Decoupling in Eastern Part of North German Basin After Zang & Stephansson 2010

Methodology for Development of the Final Rock Stress Model – FRSM of a Site and an Area After Zang & Stephansson 2010

Hydraulic fracturing equipment of type Mesey Courtesy by F Rummel

Numerical stress modelling with distinct element code 3DEC for deep geological disposal of spent nuclear fuel at Forsmark, Sweden

Angle-dispersive Neutron Diffraction

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

The Conference Stress and Texture Investigations by Means of Neutron Diffraction, STI2011 Organized by GFZ, Potsdam and JINR Is open Welcome

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