Environmental Geomechanics: A Recent Development in Geotechnical Engineering DR. D. N. SINGH PROFESSOR Geotechnical Engineering Division Department of Civil Engineering I.I.T. BOMBAY firstname.lastname@example.org. Civil Engineering. "...to design and construct public works...". Transformation.
Environmental Geomechanics: A Recent Development in Geotechnical EngineeringDR. D. N. SINGHPROFESSORGeotechnical Engineering DivisionDepartment of Civil EngineeringI.I.T. BOMBAYdns@civil.iitb.ac.in
"...to design and construct public works..."
Practice of improving and maintaining the built and natural environment to enhance the quality of life for present and the generations to follow
“Designers and Builders of
The Quality of Life…….”
Sluggish and “Don’t bother approach”
Is a Philosophy put in practice to deal with
under-ground “environment” & Problems associated with it
Geotechnical Engg. and Environmental Engg.
Above ground storage
No protection Protected by
Engineered Backfill geological materials.
with backfillProtected by
high-retardation geologic material
earthquakes/(& to some extent other natural calamities).
Assessment of pollutants being discharged on/in the soil deposits (Disposal/Handling/storage)
Process by which the pollutants travel in geo-environment
Protection of ground water aquifers from contamination
Methods of cleaning the contaminated sites
Methods of creating “Value added” products
(Recycling & Reuse)
Natural and man made
Recycle and Reuse of Industrial waste(s)
The Natural Environment
Man Made Environment
The Particle Energy Field Theory
Environmental Geotechnical Problems
Requires knowledge from other Disciplines
Bacteriology Biology Chemical Engg.
Climatology Geohydrology Geophysics
Geochemistry Hydrogeology Mechanics
Microgeology Physico-Chemistry Soil Science
Soil Engineering Toxicology
Understanding of Soil response to Environments
(Short & long-term)
The Cycle of Nature
(due to oxidation of Iron Sulphide (FeS2) or Pyrites to H2SO4)
Most geotechnical projects occur in nature
Soil is more sensitive and susceptible to environment
than any other construction material
Specific gravity and Atterberg limits are constant
Void ratio and porosity as indicators of soil deformation
Water in the soil mass is mainly gravity water
(need to consider Environmental water)
Flow through a soil mass is only due to hydrostatic potential
(need to consider thermal/electrical/magnetic/chemical effects)
Constitutive models are arbitrarily chosen.
You are most welcome to Visit the laboratory