Microstructure, filtration, elastic and thermal properties of granite rock samples: implications for HLW disposal
V. A. Petrov, V. V. Poluektov, A. V. Zharikov, R. M. Nasimov, N. I. Diaur, V. A. Terentiev, A. A. Burmistrov, G. I. Petrunin, V. G. Popov, V. G. Sibgatulin, E. N. Lind, A. A. Grafchikov, V. M. Shmonov, 2005. "Microstructure, filtration, elastic and thermal properties of granite rock samples: implications for HLW disposal", Petrophysical Properties of Crystalline Rocks, P. K. Harvey, T. S. Brewer, P. A. Pezard, V. A. Petrov
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This contribution presents preliminary data on the petrographic and mineral—chemical composition of the granitoid and dioritoid core samples of the Itatsky and Kamenny sites in the Nizhnekansky Massif of the Krasnoyarsk Region, in combination with data on structure of their pore space, filtration, elastic, mechanical and thermophysical properties, data necessary to select a site for an underground research laboratory. This laboratory would be a precursor to an underground radioactive waste facility. It was found that the variation of petrophysical properties depends on the degree of metamorphic, hydrothermal—metasomatic and deformational transformations, and differs markedly for two groups of rocks, namely, 1 — granites and granite-gneisses, and 2 — quartz diorites and diorites. Comparative analysis of the data obtained shows that the country rocks of the Kamenny site have a relatively higher degree of heterogeneity in their petrophysical characteristics, than those of the Itatsky site. These results could be applied both to select the preferred site and to make a preliminary estimate of the thermal, hydraulic and mechanical behaviour of country rocks in the vicinity of a prospective underground heat-generating waste repository.
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Boreholes are commonly drilled into crystalline rocks to evaluate their suitability for various applications such as waste disposal (including nuclear waste), geothermal energy, hydrology, sequestration of greenhouse gases and for fault analysis. Crystalline rocks include igneous, metamorphic and even some sedimentary rocks. The quantification and understanding of individual rock masses requires extensive modelling and an analysis of various physical and chemical parameters. This volume covers the following aspects of the petrophysical properties of crystalline rocks: fracturing and deformation, oceanic basement studies, permeability and hydrology, and laboratorybased studies. With the growing demands for sustainable and environmentally effective development of the subsurface, the petrophysics of crystalline rocks is becoming an increasingly important field.