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JOANNEUM RESEARCH

Applied Geophysics

Institute of Applied Geophysics – new Dam Project

2nd IMPACT Project Workshop2nd IMPACT Project Workshop Mo-i-Rana, Norway 12-13th September 2002

presented by: Rainer Morawetz

INSTITUTEof

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Overview

Introduction to JOANNEUM RESEARCH and its Institute of Applied Geophysics

New Key-Project – „Dam Investigation Methods and Geotechnical Applications“ Project Description Geophysical Methods Goals Further Work

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Background - Company JOANNEUM RESEARCH is Austria’s largest

research organisation owned by a provincial government

Bridge between Research and Application Applied R&D Technology transfer Promotion of future experts and executives

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Institute of Applied Geophysics

Background –Institute of Applied Geophysics

Founded 1981 in co-operation with Montan University

Located in Leoben

Highly competent centre for development and application of geophysical methods

Institute offers full spectrum of geophysical methods

Staff: Scientific staff: 11 Technical and administrative staff: 4 Students: 3 .... 4

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Institute of Applied Geophysics

Main Research Fields

1. Seismic reflection for rock structure studies and reservoir characterisation

2. Borehole geophysics and petrophysics for complex rock characterisation

3. Geophysical methods for use in geotechnics, risk assessment and archaeology

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Institute of Applied Geophysics

Main Research Field 3 – Key Project:

„Development of Dam Investigation Methods and Geotechnical Applications“

Extend the use of geophysical methods in geotechnical fields Focus on development of a method for non-destructive, fast

and effective investigation of dams and embankments

Milestones: Literature Review Test Measurements Systematic Analysis of Methods

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Institute of Applied Geophysics

Geophysical Methods Non-destructive

Repeatable

Ground characterisation using physical values

Subsurface structure Subsurface properties

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Geophysical Methods - Dams

In general, better results gained by using a combination of methods

Geophysical Methods -

Dam InvestigationsIn

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Layer boundaries (X) X X XCavities X X XSand/Clay X X XSeepage Paths X XWater Saturation X (X) XElectrical Properties X XMonitoring X X X

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Goals Identification and relevant geotechnical

assessment of inhomogeneities using non-destructive techniques

Method for the economic investigation of long lengths of dam (eg. flood defence embankment)

Development of techniques for long-term monitoring

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Further Work Implementation, trial, and refinement within

scope of EU project and with industrial partners (particularly of mobile but economic investigation techniques suitable for long lengths of dam)

Development of techniques to derive absolute geotechnical values (eg. degree of saturation, shear strength…)

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JOANNEUM RESEARCH

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Please talk to me in the breaks!

•your opinion?

•which geotechnical parameters are particularly relevant to dams?

•have you any data/ideas which may help us?