Environmental Geomechanics: A Recent Development in Geotechnical Engineering Dr. Syed Mohamed Ibrahim PROFESSOR and Director Department of Civil Engineering.

Slides:



Advertisements
Similar presentations
Part III Solid Waste Engineering
Advertisements

STABILITY ANALYSIS IN PRESENCE OF WATER Pore pressures Rainfall Steady state flow and transient flow.
Advanced Hydrogeology Malcolm Reeves Civil and Geological Engineering.
What is a Civil Engineer?
Environmental Engineering
G3 – Environmental Geomechanics (Dr Sam Yuen)
Technical Electives for the Energy & Environment Specialization Anil K. Mehrotra Director, Centre for Environmental Engineering Research & Education (CEERE)
Water quality affected by some anthropogenic influence. Origin - domestic, industrial & commercial or agricultural activities.
ENVI 485 2/6/07 Introduction to Environmental Geology (cont.) Land use planning Introduction to soils.
Environmental Geomechanics: A Recent Development in Geotechnical Engineering DR. D. N. SINGH PROFESSOR Geotechnical Engineering Division Department.
Handling of Future Human Actions in the safety assessment SR-Site Eva Andersson.
1 Levels of Reality – Inductively? Towards an Inductive Theory of Levels of Reality Łukasz Lamża The Pontifical University of John Paul II in Krakow, Poland.
Links with other assessment reports in the Czech Republic Tereza Ponocná CENIA, Czech Environmental Information Agency.
H2OH2O Water. Where is our water 97.5% of all water on Earth is saltwater or brackish water. 1.75% of all water is frozen..75% of all of the water on.
What do the following have in common? Airplanes, bridges, cars, dams, electricity, skyscrapers, landfills, helicopters, offices, pumps, restrooms, spaceships,
Pollution.
Material Flow Carol Timson 4/12/2004. Material Flow l Humans and biota are responsible for redistribution of chemicals on Earth. l The Anthroposystem.
Policy and Legal Framework on Soil Contamination Management in Thailand Workshop on Strengthening Contaminated Soil Monitoring in Vietnam, November.
THE NATURE OF SOIL By Sarik Salim. The nature of Soil Soil is defined as a collection of mineral particles that was formed due to the weathering process.
Learn Engineering: Because Dreams Need Doing When you see a star, fill in the notes on your handout. Please take time to think and reflect.
Green Engineering Careers Tom Rebold Chair, Engineering Department.
Spheres of system Earth. Understanding How Our Planet Works The first step to understanding how our planet works is to think about our planet as a SYSTEM.
강 영 종 교수 사회환경시스템 ( 토목환경공학과 ) (Civil & Environmental Engineering) 사회환경시스템 ( 토목환경공학과 ) (Civil & Environmental Engineering)
Civil and Environmental Engineering Engineering the Future-2014.
Ecosystem and the Biosphere: Metaphors for Human-Induced Material Flows By: Brian Ponczak January 31, 2002 Sustainable Air Quality.
Chapter 11 Water. Properties of water that are important to know for Environmental Science Water is a polar molecule Surface tension Capillary action.
Civil and Environmental Engineering
Section 1 Soil and Pedosphere
Soil Mechanics & Foundation Engineering 1
Material Flow Carol Timson 4/12/2004. Overview l Biogeochemical Systems Mass Balance l Ecosystem Closed Loop l Anthroposystem Open System l Material Flow.
GO C3Analyze and Evaluate Mechanisms Affecting the Distribution of Potentially Harmful Substances within an Environment. Transport of Materials Through.
Ecosystems Ecosystems: What Are They and How Do They Work?
Introduction to Environment. Environment : from the French word ‘environner ‘- to encircle or surround Whatever is around us constitutes our Environment.
SOIL MECHANICS AND FOUNDATION ENGINEERING-II (CE 311)
1 [1] Engineering Geology (EC 101) [1] Dr SaMeH Saadeldin Ahmed Associate Prof. of Environmental Engineering Civil and Environmental Engineering Department.
Introduction to Environment. Environment : from the French word ‘environner ‘- to encircle or surround Whatever is around us constitutes our Environment.
SCIENCE FAIR CATEGORIES MIDDLE SCHOOL :
ECOSYSTEM COMPONENTS: ENERGY FLOW & MATTER CYCLING.
Mohamed KSIBI Professor and Director Environmental Chemistry Higher Institute of Biotechnology Sfax University Tunisia 1.
Geoscientists gather and interpret data about the Earth and other planets. They use their knowledge to increase our understanding of Earth processes and.
Water Pollution: Pollutant Transport Mechanisms
Unit 5 Lesson 3 Human Impact on Water
Unit 4 Lesson 1 Human Impact on Water
Environmental studies
Faculty Of Civil engineering department BMCET,SURAT.
The Earth As A System.
Atterberg's Limits Faculty of Applied Engineering and Urban Planning
Lecturer: Dr. Frederick Owusu-Nimo
The Universe is Matter and Energy
Various Fields in Civil Engineering By R.Janani
SOIL STABILIZATION USING WASTE FIBERS &FLY ASH
Geotechnical Engineering II
Multidisciplinary nature of environmental studies Lecture #1
ENVIRONMENTAL SCIENCE : ITS IMPORTANCE AND CHALLANGES
Unit 1: Ecology Review Lesson 16 September 17th, 2010.
Human Effects on Hydrosphere Quality
GEOTECHNICAL ENGINEERING – I B.E. IVTH SEMESTER
Lithosphere & Soil ; ;
Environmental Geotechnics
Lecturer: Dr. Frederick Owusu-Nimo
How do we influence the environment?
Environmental Education
Welcome To Our Presentation 1. Topic Name Transfer Stations and Transport, Ultimate Disposal Methods 2.
Human Effects on Hydrosphere Quality
Human Effects on Hydrosphere Quality
Lithosphere & Soil ; ;
Vocabulary. Vocabulary More Vocabulary Even More Vocabulary.
ENVE 321: Intro to Environmental Engineering
Introduction to Earth Systems.
Presentation transcript:

Environmental Geomechanics: A Recent Development in Geotechnical Engineering Dr. Syed Mohamed Ibrahim PROFESSOR and Director Department of Civil Engineering Mohamed Sathak AJ College of Engineering

"...to design and construct public works..." Civil Engineering "...to design and construct public works..." Transformation Practice of improving and maintaining the built and natural environment to enhance the quality of life for present and the generations to follow

Role of Civil Engineers “Designers and Builders of The Quality of Life…….” Creators of the Civilised Society Environment Providing solutions to the needs of a developing global population Performers (on a world stage) as strategic thinkers and global managers Pillars of local Economies Creating and maintaining complex infrastructure in wealth creation

Geotechnical Engineering Subject Organization Rock Mechanics Foundations Retaining Structures Seepage/Slopes/Dams Soil Mechanics Geomechanics Environment Geotechnical Engineering Challenge Effect is more pronounced

Environmental Geomechanics Genesis Population Explosion Industrialization Sluggish and “Don’t bother approach” Ignorance Human Greed Is a Philosophy put in practice to deal with under-ground “environment” & Problems associated with it Combination/Blend of Geotechnical Engg. and Environmental Engg.

Waste Disposal Strategies Above ground storage No protection Protected by geologic materials

Shallow trench burial Engineered Backfill geological materials.

Deep Disposal with backfill Protected by high-retardation geologic material

Ascertaining the quality of air, water, and land resources; Issues are Ascertaining the quality of air, water, and land resources; Transport, use, and disposal of hazardous wastes water and wastewater treatment, and reuse. Analysis and design of foundation systems, seepage control, earth dams and water resource structures, response of foundations and embankments to the ENVIRONMENTAL ACTIVITIES Man made Natural industrialization/population explosion earthquakes/(& to some extent other natural calamities).

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 (Recycling & Reuse)

Specific Studies on Hazardous wastes Physical, Chemical, Mineralogical, Electrical and Thermal characterization Geoenvironmental hazards: Natural and man made Recycle and Reuse of Industrial waste(s) Role of Geotechnical engineering in environmental protection Surface and subsurface contamination Characterization of contaminated ground Geoenvironmental site investigation Site assessment technologies

Soil-Water-Environment Interaction   The Natural Environment Man Made Environment Geomicrobiosphere 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 Natural Environment   Atmosphere Biosphere Oxygen Cycle Nitrogen Cycle Carbon Cycle Hydrosphere Lithosphere Geomicrobiosphere Ecosphere The Cycle of Nature

Solid Liquid Man-made Environment Agricultural wastes Human and Animal wastes Industrial wastes Mine wastes……Acid mine waste (due to oxidation of Iron Sulphide (FeS2) or Pyrites to H2SO4) Nuclear wastes Construction Effects (Blasting/Dewatering/debris…)

Soil Response to Environments   Soil structures (on/in/with) Pore fluid characteristics Soil-heat Soil-Chemical Soil Bacteria Soil-Root Soil-Electrical Soil-Liquid (water)

Basic concepts of Analysis Most geotechnical projects occur in nature Long-term phenomenon Soil is more sensitive and susceptible to environment than any other construction material Loading may greatly affect soil properties but not the only Parameter to be considered Think of other factors: Heat Moisture (wet/Dry) Pollution intrusion

Classical Soil Mechanics: Some flaws 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. Stress-strain relationship

Soil Classification: Controlling Parameters Grain-size distribution Soil Consistency (moisture content) LL PL PI Present scenario (Parameters) % Passing #200 Sieve Specific surface pH in pore fluid Ion-exchange capacity Absorption & adsorption Thermal properties (Conductivity, diffusivity, specific heat) Dielectric constant (Electrical properties) Proposed scenario (Parameters)

Thanks for your attention!