The testing system uses volumetric and stress-strain gauge methods to measure the deformation characteristics of coal and rock, enabling automatic data acquisition under high temperature and high pressure conditions; it can conduct systematic research on the adsorption characteristics of coal and rock and the deformation characteristics under the action of different working media such as water, gas, carbon dioxide, and nitrogen.

Main Technical Parameters
1. Specimen Size: Φ50mm×100mm;
2. Pressure Measurement Range: 0-24 MPa, Test Accuracy: 0.03% of full scale;
3. Temperature Measurement Range: -5-95℃, Temperature Control Accuracy: ±0.02-±0.05℃;
4. Strain Measurement Range: ±19999με, Measurement accuracy is 0.5% of the indicated value under 0-50℃ conditions, time zero drift ≤3με/2h, temperature drift ≤1με/℃;
5. The booster pump uses a US imported double-plunger booster pump with a maximum working pressure of 51.7 MPa;
6. Adsorption tank: 280ml/35Mpa, Reference tank: 50ml/35MPa.