Overview

      In the experimental condition,the device simulate to use the extensometer to measure small diameter core which has different porosity and permeability in the condition of quasi triaxial overburden and different pressure and temperature to get the variation of circumferential and axial deformation with different overburden stress and the detection of single-phase fluid permeability.

Device features

1,It can carry out the measurement of coal core and core’s liquid measurement of permeability;

2,It can use strain detection technology to research the relationship between stratigraphic overpressure and linear elastic deformation of coal seam rock,and then research the change characteristics of coal and rock stress on the ground layer;

3,the device is triaxial loading simulation of confining pressure or axial compression;

Main technical parameters

1,simulated high temperature:120℃,error≤±2℃；

2,simulated high pressure:confining pressure:70MPa,pore pressure:50MPa,error:≤1%;

3,it has the capacity of fluid displacement,the displacement flow can be controlled and measured;

4,core size:φ25mm*50mm,φ50mm*100mm;

5,permeability measuring range:≤0.01md,error:≤10%;