Historique de la page

GEOS7AD

Rheology of geomaterials

ECTS Credits : 2

Duration: 21 heures

Semester : S7

person(s) in charge:

Yann GUNZBURGER, Associate Professor, yann.gunzburger@mines-nancy.univ-lorraine.fr

Keywords : Strain, Stress, elasticity, rupture

Prerequisites : Fundamental knowledge in Continuum Mechanics (basics in stress and strain, primarily) such as is taught, for example, in the course “Continuum Mechanics of Solids and Liquids” in 1st Year.

Objectives :

application of Continuum Mechanics to geomaterials

Program and content:

This course deals with the direct application of Continuum Mechanics to geomaterials (soil, rocks, concrete, etc.). The objective is to present the essential aspects of their mechanical behaviour (elasticity, viscosity, plasticity, breaking) when submitted to stress of natural as well as artificial origin and at various scales of time and space. This course studies the suitability of soils and rocks used as material or load-bearing structures (mines and quarries, tunnels, buildings, etc.), as well as analysing certain natural geological structures.
At the end of the course, students will have mastered the basics in geomechanics and will be able to use this knowledge to analyse or predict the behaviour of geomaterials. Special attention will be paid to the intellectual approach to take to be able to obtain quantitative answers to concrete problems with complex, incomplete or uncertain data.

Content
• Theory of strain
• Theory of stress and Mohr circles
• Elasticity
• Cracking, fracturing, breaking
• Plasticity and warping
• Practical work at the technical institute “IUT de Nancy-Brabois”
• Parameters influencing rheology – strain mechanisms

Abilities: 

Levels

Description and operationnal verbs

Know

Understand

Apply

Know the basic physical parameters in continuum mechanics (stress, strain) and the relationships between them (Hooke's law) or limit (failure criteria).

Understand

Understand the inherent difficulties in the application of continuum mechanics for geomaterials.

Apply

Effectively implement the continuum mechanics to describe some aspects of behavior of geomaterials.

Analyse 

Detailed analysis of the mechanical consequences of an underground excavation (gallery, tunnel, etc.) in an initially charged environment

Analyse 

Summarise

Assess

Évaluations :

•  Written Test

•  Continuous assessment

•  Oral presentation

•  Project

•  Written report