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- W4313444300 abstract "The continuum dual-porosity medium model is used to substantiate and to evaluate under laboratory conditions the method for determination of parameters (permeability of fractures $$k_{1}$$ and matrix $$k_{2}$$ and mass-transfer coefficient $$beta$$ ), describing mass transfer processes in the fractured-porous rock masses on the basis of solution to inverse problems by the stationary percolation test data. The researchers proposed and employed the test scheme involving three sequential measurements of the stationary flow rate ( $$F_{0}$$ , $$F_{1}$$ and $$F_{2}$$ ) in a specimen at different input pressure values: according to the standard scheme $$F_{0}$$ , the fractures are sealed at one $$F_{1}$$ and other $$F_{2}$$ ends of the test specimen. The model of the experiment is developed, the analytical solution is obtained for the direct problem on unidimensional steady flow of fluid in a dual-porosity medium, viz. distribution of pressure in fractures and a matrix. The algorithm for solution to an inverse problem is derived with determination of $$k_{1}$$ , $$k_{2}$$ and $$beta$$ by the recorded flow rates. The approach allowing establishment of the empirical dependence of $$k_{1}$$ and $$k_{2}$$ versus effective stress is theoretically justified and verified on the basis of simulated data. The numerical analysis revealed low stability of inversion procedure by input data, so higher precision of the process can be gained due to a series of measurements at increasing input pressure with subsequent smoothening of obtained results." @default.
- W4313444300 created "2023-01-06" @default.
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- W4313444300 date "2023-01-01" @default.
- W4313444300 modified "2023-09-23" @default.
- W4313444300 title "An Approach to Determination of Stress-Dependent Properties of Fractured Porous Rocks by Lab Test Data" @default.
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- W4313444300 doi "https://doi.org/10.1007/978-3-031-16575-7_25" @default.
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