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Some basic problems concerning on measurements of the hydraulic properties of rock by the transient pulse method have been discussed.Firstly, a method to evaluate both permeability and specific storage coefficient, using the log [(p1-p2)/Δp]-tdiagram, is presented. Evaluation can be easilyconducted, although this method is rigorous because itis, induced based on the analytical solution.Secondly, an experimental apparatus and measuring technique to conduct precise measurement have been examined by performing on two kinds of sandstone and one kind of mudstone.Lastly, proposal has been made to give criteria for judgement whether the Darcy's law holds for the experimental conditions, utilizing the log [(pl-p2)/Δp]-t diagram, which is predicted partially based on the non-Darcy's flow analysis.
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ISHIJIMA et al. (1993) studied this question.
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