Sub-topics Environmental Geomechanics Genesis of the Subject Scope - PowerPoint PPT Presentation

Basic Introduction Sub-topics • Environmental Geomechanics • Genesis of the Subject • Scope

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.

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

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

Scope of Environmental Geomechanics Assessment of pollutants being discharged on/in the soil deposits (Disposal/Handling/storage) Process by which the pollutants travel in geo- environment (Contaminant Transport) Protection of ground water aquifers from contamination (Containment) Methods of cleaning the contaminated sites (Remediation) Methods of creating “Value added” products (Recovery, Recycling & Reuse…..Three Rs)

Spread of Contaminant(s) Precipitation (Waste-Environment Interaction) Containment /Barrier (Sheet pile/grout) Landfill G.L. Soil Stationary W.T. Leachate Contaminant plume Hard rock (Impervious,Aquitard)

Spread of Contaminant (another scenario) Precipitation Calls for: Modeling (to predict transport & fate of contaminants in geoenvironment) Validation Landfill G.L. Soil Extent (time & space) Moving W.T. Intensity Concentration plume Hard rock (Impervious,Aquitard)

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)