The Properties of a Coal Body and Prediction of Compound Coal-Rock Dynamic Disasters

Figure 2

Schematic of the experimental system. 1, high-pressure gas cylinder; 2, thermostatic water bath; 3, triaxial osmoscope; 4, manual hydraulic pump; 5, oil pressure gauge; 6, burette; 7, levelling bottle; 8, valve; 9, reducing valve; 10, hydraulic tube.