|1||Chair||Marcelo Sanchez Castilla||United States|
|3||Nominated by TC Chair||Tomasz Hueckel||United States|
|4||Nominated by TC Chair||J.Carlos Santamarina||United States|
|5||Nominated by TC Chair||Jean-Michel Pereira||France|
|6||Corresponding Member||Tanusree Chakraborty||India|
|7||Corresponding Member||Jean Vaunat||Spain|
|8||Nominated Member||INGRID TOMAC||Croatia|
|9||Nominated Member||Tae Sup Yun||South Korea|
|10||Nominated Member||Gye-Chun Cho||South Korea|
|11||Corresponding Member||Seung Rae Lee||South Korea|
|12||Corresponding Member||Duhee Park||South Korea|
|13||Corresponding Member||Changho Choi||South Korea|
|14||Corresponding Member||David Taborda||United Kingdom|
|15||Nominated Member||Francesca Casini||Italy|
|16||Corresponding Member||Gabriele Della Vecchia||Italy|
|17||Nominated Member||M.K. Bhoi||India|
|18||Nominated Member||Prasenjit Basu||India|
|19||Corresponding Member||Ashraf Osman||United Kingdom|
|20||Nominated Member||Norma Patricia López Acosta||Mexico|
|21||Nominated Member||ANA VIEIRA||Portugal|
|22||Nominated Member||Alessio Ferrari||Switzerland|
|23||Nominated Member||Leonardo Guimarães||Brazil|
|24||Corresponding Member||Sheng Dai||United States|
|25||Corresponding Member||Shun Uchida||United States|
|26||Corresponding Member||Minsu Cha||United States|
|27||Nominated Member||Dipanjan Basu||Canada|
|28||Corresponding Member||Victor Terente||United Kingdom|
|29||Nominated Member||Fleur Loveridge||United Kingdom|
|30||Nominated Member||Duncan Nicholson||United Kingdom|
|31||Nominated Member||Farimah MASROURI||France|
|32||Nominated Member||Te-Fu Chiu||Chinese Taipei|
|33||Nominated Member||Jun Yang||Hong Kong|
|34||Nominated Member||Cesar Pasten||Chile|
|35||Corresponding Member||Abraham Chung-Fai Chiu||China|
|36||Corresponding Member||Tae-Hyuk Kwon||South Korea|
|37||Nominated Member||Henry Gustavsson||Finland|
|38||Nominated Member||Salah Sadek||Lebanon|
|39||Nominated Member||weimin Ye||China|
|40||Corresponding Member||Anh Minh TANG||France|
|41||Nominated Member||Dietmar Adam||Austria|
|42||Nominated Member||Frank Wuttke||Germany|
|43||Nominated Member||Christos Tsatsanifos||Greece|
|44||Nominated Member||Ayfer Erken||Turkey|
|45||Corresponding Member||Hamza Gullu||Turkey|
|46||Nominated Member||Guido Musso||Italy|
|47||Nominated Member||Gregory Siemens||Canada|
|48||Nominated Member||Gust Van Lysebetten||Belgium|
|49||Nominated Member||Bertrand François||Belgium|
|50||Nominated Member||Jinhyun Choo||Hong Kong|
|51||Nominated Member||Jana Frankovská||Czech & Slovak Republics|
|52||Corresponding Member||Francesco Cecinato||Italy|
There is no news to show for this TC
Host Member Society: USA
Short name: Energy Geotechnics (TC308)
1st ICEGT-2016 - First International Conference on Energy Geotechncis, 29 – 31 August 2016, Kiel, Germany. http://www.iceg-2016.de/
The following task forces have been initially identified. Task forces I) and II) are mainly associated with energy production; task forces III) and IV) with energy conversion and storage; and task forces V) and VI) with storage of highly pollutant waste from the energy sector and CO2. Task force VII is associated with others geotechnical activities related to energy not contemplated in the previous task forces. A brief description of each task force is introduced as follows.
I) Gas Hydrate Sediments (Task leader: J.Carlos Santamarina)
Methane hydrates are solid compounds made of water molecules clustered around low molecular weight gas molecules. Methane hydrates form under pressure and temperature conditions that are common in deep marine sediments and sub-permafrost layers. Stability and behavior of Hydrate Bearing Sediments (HBS) are characterized by the metastable character of the gas hydrate structure which strongly depends on Thermo-Hydro-Mechanical and Chemical actions. Methane hydrate deposits can lead to large-scale submarine slope failures, blowouts, platform foundation failures, and borehole instability. Gas hydrates also constitute an attractive source of energy as they are estimated to contain very large reserves of methane. Despite the widespread recognition of the importance of naturally occurring gas hydrates, the understanding of the fundamental physical processes associated with gas hydrate formation, HBS stability and hydrate dissociation in porous sediments remains in its infancy.
II) Unconventional Hydrocarbon. Hydraulic Fracturing (Task leader: Leonardo Guimarães)
Hydraulic fracturing is a technique used to stimulate the production of gas and oil by developing fractures in the geological formation. Fractures are created by pumping large quantities of fluids (which generally include proppants, sand, ceramic pellets or other small incompressible particles) at high pressure down deep wellbores (that may include horizontal or directional sections) into the target claystone formation. These fractures can extend several hundred feet away from the wellbore. The high pressures introduce important changes in the geomechanical behavior of the formation. This strongly coupled hydro-mechanical problem brings unprecedented challenges to the geomechanics community.
III) Energy Geo-Structure and Storage of Thermal Energy in the Ground (Task leader: Guney Olgun)
Energy geo-structures such as thermal piles, diaphragm walls and tunnels can utilize the ground for heating and cooling of structures. These thermo-active elements in contact with the ground can be used as pathways to extract heat in the winter and inject heat in the summer. Therefore ground-source heat exchange can help in balancing the heat energy demand over seasons and also help in maintaining a better energy management between structures with different energy demand profiles. The use of deep foundation elements as heat exchangers presents unique challenges for the broader geotechnical engineering profession. The processes that govern the heat exchange behavior can affect the load transfer mechanisms of these deep foundation elements. There is need to synthesize various thermal pile design guidelines available in different countries. There are also opportunities for using heat in these applications to improve the behavior of some types of soils. Opportunities for storage of heat obtained from renewable resources (solar thermal, fuel cells, etc.) in soils and borehole arrays are another important area of future research. This coupling necessitates a broad understanding of thermal and mechanical processes. These complex phenomena relate to thermal soil behavior and temperature induced soil-structure interaction.
IV) Energy Geo-storage (Task leader: Frank Wuttke)
The increasing energy demand, current dependency on fossil fuels, and climate implications have led to an accelerated growth in renewable energy resources. The inherent fluctuating nature of renewable sources will create an unprecedented demand for large-capacity energy storage systems. Energy geo-storage will involve deep large-scale systems (i.e., multi-scale, from building scale to city scale), a large number of cycles (daily fluctuations and long-duration infrastructure), and multi-physics (hydro-thermo-chemo-mechanical processes). Most promising large-scale storages of high energy quantity are related to geo-systems. The research in geo-energy storage systems are urgently needed and has to be enforced in the geotechnical society to prospect the basics, to overcome the limits and problems and to consolidate the opportunities from the geotechnical point of view. The general and in particular the scientific knowledge is still low in that research field, but with the huge economical need the research will significant increase in future.
V) High Level Radioactive Waste Disposal (Task leader: Antonio Gens).
Deep geological disposal is one of most favored solutions for the isolation of high level nuclear waste. It is also the one that requires major geotechnical input. The natural (host rock) and engineered barriers (generally made up of swelling clays) will be subjected to simultaneous thermal, hydraulic and mechanical (THM) phenomena triggered by the heat-emitting nature of the nuclear waste, the swelling character of the unsaturated clay barrier, and the highly confined conditions of the isolation system. The THM processes described above and their mutual interactions will control the evolution and long term response of the whole isolation system; therefore a good understanding of the main THM phenomena are required for a safe design of HLW repositories. The introduction of new types of heterogeneous pellet-based engineered barriers and the migration of designs towards higher temperatures provide fresh challenges to geotechnical engineering in a multi-physics context.
VI) Carbon Dioxide Geological Storage (Task leader: Jean-Michel Pereira)
CO2 capture and geological storage is considered as one of the most promising technologies to CO2 emissions into the atmosphere and thus mitigates greenhouse gases effects on global warming. For efficiency reasons, this fluid has to be injected deep enough (typically below 1000m deep) to reach a supercritical state and in host rocks having good properties in terms of injectivity and available porosity. The scientific issues to be tackled involve, fluids flow problem and reactive transport issues associated with the chemical activity of CO2 in contact with water (studied by mostly geochemists) but the mechanical aspects (e.g. fault reactivation, chemical degradation of the rocks, pressure changes, including drying of rocks, cap rock behavior) cannot be disregarded. This is where the expertise of geotechnical engineers working on geomechanical issues related to chemo-thermo-hydro-mechanical couplings would make a real difference. Our society thus can (and has to) significantly contribute to this field.
VII) Others geotechnical activities related to the energy sector (Task leader: Jayantha Kodikara)
This task force is related to other activities in the energy sector in which geotechnical engineers are involved and not contemplated in the task forces mentioned above, among others: oil sands, foundations of oil pipelines, geotechnical issues related to wind farm and tidal energy, embodied energy of geotechnical infrastructure, geo-mechanical stability of oil reservoir, mid-depth enhanced geothermal systems.
VIII) Fundamentals of Geo-Energy (Task leader: Tomasz Hueckel)
A common theme for the all tasks listed above is that soils and rocks involved in those problems are subjected to strongly coupled THM and chemical (C) interactions. The study of the phenomena associated with the different physics and they mutual interactions will be the main focus of this task force. The interest is on advancing current knowledge on the THMC behavior of soils and rocks integrating fundamental, experimental and numerical studies