Tester for pore pressure with triaxial compression

摘要

The present invention relates to a triaxial compression-under-bore pressure tester, and more particularly, to a triaxial compression-under-bore pressure tester comprising: a triaxial chamber having an internal space in which a specimen is installed; And a lateral pressure applying unit for supplying a pressure fluid to the inner space and applying a predetermined target lateral pressure to the body in a lateral direction; The lateral pressure applying unit includes: a pressure fluid supply unit for supplying pressure fluid to the inner space of the triaxial chamber; A lateral pressure sensor for measuring an actual lateral pressure actually applied to the specimen in the transverse direction by the pressure fluid supplied from the pressure fluid supply portion; And a lateral pressure control unit that compares the actual lateral pressure with the target lateral pressure by comparing the actual lateral pressure with the target lateral pressure and performing PID control of the pressure fluid supply unit such that the difference is corrected when a difference in pressure value occurs between the target lateral pressure and the actual lateral pressure, The PID control of the fluid supply unit capable of supplying the pressure fluid to the inner space of the triaxial chamber installed in the specimen allows the actual lateral pressure to be actually applied to the specimen to be automatically matched with the desired lateral pressure to be applied to the specimen It is possible to perform an accurate physical property test on the specimen and improve the convenience of the specimen.