P. Vincent, E. Humphreys
College of Earth, Ocean, & Atmospheric Sciences, Oregon State University, Corvallis, OR, USA
Department of Geological Sciences, University of Oregon, Eugene, OR, USA
Introduction: Lithospheric delamination beneath the western U.S. is believed to be the driving mechanism responsible for the evolution of magmatic and topographic features observed at the surface in the western U.S.. This process requires hot asthenosphere to be in contact with the underside of cold sub-crustal lithosphere and believed to be initiated by the Yellowstone hot spot plume that due ...
Coupled Hydro-Mechanical Analysis of Excavation Damaged Zones around an Underground Opening in Sedimentary Rock
H. Abdi, E. Evgin, M. Fall, T.S. Nguyen, and G. Su
University of Ottawa, Ottawa, ON, Canada
Canadian Nuclear Safety Commission, Ottawa, ON, Canada
A large amount of research work has been carried out in many countries to determine the viability of radioactive waste disposal in deep geological repositories. It is well known that excavation can cause damage around underground openings. On the other hand, the mechanical damage can influence the stability of the opening and the flow characteristics of the rock mass. In addition, all physical ...
G. Perillo , G. De Natale , M. G. Di Giuseppe , A. Troiano , C. Troise ,
 University of Naples Parthenope, Naples, Italy
 INGV – Osservatorio Vesuviano, Naples, Italy
Electric, magnetic and electromagnetic (em) methods are widely used to monitor active volcanoes. A review of such applications is presented in Johnston (cit). Em signals were recorded in correspondence of numerous volcanic eruptions, for example in the case of the Mt. Unzen in Giapppone, of Merapi in Indonesia, Etna in Italy and during rapid deformation in Long Valley in California. ...
M. H. Akanda , Y. Cao , A. J. Meir ,
 Department of Mathematics & Statistics, Auburn University, Auburn, AL, USA
Poroelasticity equations describe the interaction between fluid flow and solids deformation within a porous medium. Modeling of poroelasticity is coupling between elastic deformation of porous materials and Darcy’s law. Poroelasticity has numerous real world applications such as in reservoir engineering, bio-engineering, environmental engineering etc. We have used quasi-static poroelastic ...
Q. Zheng ,
 Zhejiang University, Hangzhou, Zhejiang, China
Landfill is currently the most dominating method to dispose wastes, which are caused by the lives of residents and constructions of cities and towns. Because of large amounts of organic substances in landfills, they will undergo continuous microbial degradation, which generates a lot of landfill gas. The gas consists mainly of CH4, CO2, O2 and N2, and it is also a promising source of renewable ...
Y. Beauregard, M. Gobian, and F. Garisto
University of Western Ontario, London, ON, Canada
Nuclear Waste Management Organization, Toronto, ON, Canada
In the Canadian concept for a deep geological repository for used nuclear fuel, the used fuel bundles are placed in containers consisting of an inner steel vessel surrounded by a copper shell. The filled containers are placed in excavated tunnels or boreholes and surrounded by a compacted bentonite clay buffer material. In the event of container failure, the rate of migration of radionuclides ...
E. Evgin, J.A.I. Sedano , Z. Fu
University of Ottawa, Ottawa, ON, Canada
Energy piles transfer the mechanical loads from buildings to the ground and serve as heat exchangers. Temperature changes in the ground influence its moisture content. This paper examines the effect of soil moisture content on the shaft resistance of a pile. Tests were carried out in the laboratory to determine the mechanical properties of an interface corresponding to various soil moisture ...
Impact Assessment of Hydrologic and Operational Factors on the Efficiency of Managed Aquifer Recharge Scheme
M.A. Rahman, P. Oberdorfer, Y. Jin, M. Pervin, E. Holzbecher
Department of Applied Geology, Geoscience Center, University of Göttingen, Göttingen, Lower Saxony, Germany
Due to increased demands on groundwater accompanied by increased drawdowns (ca. 2-3 meters/year), technologies that use alternative water resources have been suggested for Dhaka City, Bangladesh. Preliminary studies show that managed aquifer recharge (MAR) would help in optimal use of available water resources and to reduce adverse effects of pumping in the Dupitila aquifer of the city. In this ...
Computation of the Longitudinal Dispersion Coefficient in an Adsorbing Porous Medium Using Homogenization
A. Rijnks, M. Darwish, and H. Bruining
StatoilHydro ASA, Bergen, Norway
Shell Exploration & Production International Centre, Rijswijk,
Section of Geoengineering, Faculty of Civil Engineering and Geosciences, TU Delft, Delft, The Netherlands
The method to derive upscaled expressions for the dispersion coefficients for reactive flow in a porous medium uses a periodic unit cell (PUC), which consists for instance of a spherical grain in a cube, but nothing prohibits defining more complex PUC's. Homogenization leads to a coupled system of equations where the flow is described by Stokes equation and the concentration fluctuation is ...
Underground Coal Fire Extinction Model Using Coupled Reactive Heat and Mass Transfer Model in Porous Media
S. Suhendra, M. Schmidt, and U. Krause
Laboratory II.2: “Flammable Bulk Materials and Dusts, Solid Fuels”, Federal Institute for Materials Research and Testing (BAM), Berlin, Germany
Green house gases emission associated with natural hazard of underground coal seam fire has been recognized as a worldwide problem leading to global warming threat. Therefore, in this paper a model to study underground coal fire is presented and the results will be devoted to strategic development of coal fire extinction technology within the framework of Sino-German Coal Fire Research ...