Abstract
From the viewpoint that the principle of effective stress can apply to rocks, an attempt to estimate coefficients of permeability of rocks was performed by measuring of consolidation phenomenon like soil materials. Specimens were sedimentary rocks, i. e., soft mudstone and hard conglomerate. This attempt led to the conclusion that close agreement between coefficients of permeability measured by isotropic consolidation tests and injection tests was seen. It is a special merit of this estimation method for coefficient of permeability that a triaxial test with a consolidation test is enough to obtain coefficient of permeability without a laboratory permeability test. This simple estimation method is therefore considered one of effective methods.
