Download Flow and Contaminant Transport in Fractured Rock by Jacob Bear, C-F. Tsang, Ghislain De Marsily PDF

By Jacob Bear, C-F. Tsang, Ghislain De Marsily

Long ago or 3 many years, fractured rock domain names have obtained expanding realization not just in reservoir engineering and hydrology, but additionally in reference to geological isolation of radioactive waste. destinations in either the saturated and unsaturated zones were into account simply because such repositories are assets of warmth and capability resources of groundwater infection. therefore, as well as the Read more...

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21) where afr is a transfer coefficient, often regarded as a constant proportional to the coefficient of molecular diffusivity in the porous blocks, to the area of contact between the two continua, and inversely proportional to some characteristic distance between the fractures and the interior of the blocks. However, the assumption that this coefficient is a constant is rather questionable, especially in the case of large blocks. This observation stems from the fact that the characteristic distance to the point within a block to which the average value may be attributed, varies continuously as the component diffuses into the block, or out of it, especially in large blocks.

And Zheltov, I. P. Fundamental equations of filtration of homogeneous liquids in fissured rocks. Soviet Dokl. Akad. , 13(2):545-548,1960. Barenblatt, G. , Zheltov, I. , and Kochina, I. N. Basic concepts in the theory of seepage of homogeneous liquids in fissured rocks. Soviet Appi Math. Mech. ), 24(5):852-864, 1960. Bear, J. Hydraulics of Groundwater. , 1979. , and Bachmat, Y. Introduction to Modeling of Transport Phenomena in Porous Media. , 1990. , and Berkowitz, B. Groundwater Flow and Pollution in Fractured Rock Aquifers.

3 Sorption and Other Interactions The minerals of crystalline rocks have a considerable cation exchange capacity. They also exhibit a capacity to form surface complexes with anions as well as cations. The capacity to bind different ions to the surface depends on the pH, the concentration of many of the other ions, and on the form the species have in the solution. Many cations form complexes with the anions and other complexing agents in the water. The complexed metal ions, which would have a positive charge if not complexed, may be positively charged, neutral species, or even negatively charged species, depending on the composition of the water.

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