SLIDE 1 Basic Introduction
Sub-topics
- Environmental Geomechanics
- Genesis of the Subject
- Scope
SLIDE 2
Environmental Geomechanics
Genesis
Population Explosion Industrialization Sluggish and “Don’t bother approach” Ignorance Human Greed
A Philosophy put in practice to deal with
underground environmental Problems Combination/Blend of Geotechnical Engg. & Environmental Engg.
SLIDE 3
Environmental Geomechanics
Very broadly, the subject deals with:
Assessment of quality (Behavior/Response) of: geomaterials water, and land resources Transport, use and disposal of hazardous wastes Water and wastewater treatment, and Waste & waste-water recycling/re-use
SLIDE 4
Environmental Geomechanics……
Encompass the analysis and design of foundation system Seepage control, earth dams and water resource structures Response of foundations and embankments to the
ENVIRONMENTAL ACTIVITIES Man made Industrialization/population explosion Natural earthquakes and to some extent to Natural calamity
SLIDE 5
SLIDE 6
Scope of Environmental Geomechanics
Protection of ground water aquifers from contamination (Containment) Assessment of pollutants being discharged on/in the soil deposits (Disposal/Handling/storage) Process by which the pollutants travel in geo- environment (Contaminant Transport) Methods of cleaning the contaminated sites (Remediation) Methods of creating “Value added” products (Recovery, Recycling & Reuse…..Three Rs)
SLIDE 7
Precipitation Landfill Stationary W.T. Contaminant plume Leachate Hard rock (Impervious,Aquitard) Soil G.L.
Spread of Contaminant(s)
Containment /Barrier (Sheet pile/grout)
(Waste-Environment Interaction)
SLIDE 8
Precipitation Landfill Moving W.T. plume Hard rock (Impervious,Aquitard) Extent (time & space) Intensity Concentration G.L.
Spread of Contaminant (another scenario)
Soil Calls for: Modeling (to predict transport & fate of contaminants in geoenvironment) Validation
SLIDE 9 Importance of the following
- Theory (model making)
- Lab tests (data generation)
- Field tests (data generation/verification)
- Empirical relations (validation of the developed theory)
- Computer Applications (Role of Information Technology)
- Experience, Judgement and FOS
(Application of the acquired knowledge)