三軸圧縮試験による多孔質岩石の変形と空隙率, 浸透率の変化について
1966 年 82 巻 936 号 p. 343-348
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1966 年 82 巻 936 号 p. 343-348
Domengine sandstone, Boise sandstone have been. subjected to triaxial Compression in which strain, porosity and permeability are measured simultaneously. The experimental apparatus are assembled with testing machine, triaxial vessel, high pressure pump and two measuring appliances which are strain meter and mercury burette to measure the permeability and pore volume. Domengine sandstone is porous and brittle material. When confining pressure has been varied between 50 to 250 (psig), the elastic moduli are increased depend upon the raising of pressure.
On the Boise sandstone, the porosity does not so much change that the permeability does under triaxial tests. Porosities changed between 26.8% and 25.7%, but otherwise permeabilities varied from 1, 080 to 536 millidarcy.
