Charakterisierung von Porenraumeigenschaften in unkonsolidierten Sedimenten (Laboruntersuchungen und modifizierte Kapillarmodelle) |
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Authors: | Dipl.-Ing. Edith Müller-Huber Prof. Dr. Jürgen Schön |
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Affiliation: | 1. Lehrstuhl für Tiefbohrtechnik, Montanuniversit?t Leoben, Erzherzog-Johann-Stra?e 3, 8700, Leoben, ?sterreich 2. Lehrstuhl für Angewandte Geophysik, Montanuniversit?t Leoben, Peter-Tunner-Stra?e 25, 8700, Leoben, ?sterreich
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Abstract: | Quantitative description and characterization of hydraulic processes is of specific interest for a wide range of issues ranging from ground water storage and protection to contaminant transport and resulting environmental hazards or for shallow geothermal projects. Therefore, the aim of this study is to achieve a detailed characterization of sediment pore space and fluid flow based on laboratory tests on disturbed sediment samples and novel modified capillary tube models for different pore geometries. Our model calculations show that the capillary tube models cover four major influences, namely porosity (linear dependence), pore body radius (exponent of about 2), the ratio of pore body to pore throat radius and tortuosity. The most critical influence on permeability can be attributed to the ratio of pore body to pore throat radius while pore shape seems to exert only minor influences on permeability. |
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