By Ove Stephanson (Eds.)
One of the most vital and interesting present steps ahead in geo-engineering is the improvement of coupled numerical types. They symbolize the fundamental physics of geo-engineering techniques which could contain the results of warmth, water, mechanics and chemistry. Such types offer an integrating concentration for the big variety of geo-engineering disciplines.The articles inside this quantity have been initially provided on the inaugural GeoProc convention held in Stockholm and comprise a suite of surprisingly prime quality info now not on hand in different places in an edited and coherent shape. This assortment not just merits from the most recent theoretical advancements but additionally applies them to a few useful and broad ranging functions. Examples comprise the environmental matters round radioactive waste disposal deep in rock, and the hunt for brand new reserves of oil and gasoline.
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Additional info for Coupled thermo-hydro-mechanical-chemical processes in geo-systems: fundamentals, modelling, experiments and applications, GeoProc2003 conference held at the Royal Institute of Technology in Stockholm, Sweden, in October 2003
The axisymmetric geometry used in AECB and KPIH models was motivated through an exploratory two-dimensional modeling, with results showmg that the resaturation of the bentonite buffer by wetting from the surrounding rock was uniform and axisymmetric, thus making it unnecessary to include discrete fractures in the model. The CLAY model is one-quarter symmetric. 14 There are many challenges facing the research teams for the study of this task, such as limitations in the different "effective stress" principles for the bentonite material under complex loading conditions; the uncertainty of the hydraulic boundary and the ifi situ conditions; and the complex and largely unknown in situ fracture properties (both geometrical and hydromechanical).
1996). The major findings from this BMT study include the following: • This BMT was a well-defined near-field problem, with both a realistic fracture network (which may likely be encountered in practice) and complete aspects of coupled THM processes. • Agreement in temperature results from all research teams was remarkable. • Heat convection had negligible effects on the temperature results. ( In this and next sections, we shall illustrate the type of research under DECOVALEX by two examples from DECOVALEX I and II, respectively.
In an attempt to bypass these problems (Moreno and Neretnieks 1993) formulated a simple channel network model that does not use detailed information on aperture variations and fracture orientations. It uses information obtained from hydraulic measurements in boreholes on the flowrate distribution and the frequency of conductive fractures found in the boreholes. The model assumes that every measured flowing fracture in a borehole represents a channel with constant properties In order to follow a packet of water along the different fractures it traverses it is necessary to have information on the mixing and division processes at intersections.