Study on Acoustic Emission Characteristics and Mechanical Behavior of Water-Saturated Coal

Figure 4

Systematic experimental diagram of the acoustic emission system and uniaxial compression system. (a) AE data processing system, (b) Loading control system, and (c) Loading and signal collecting system: (1) computer (for data display), (2) AE monitoring device (3) preamplifier, (4) coal sample, (5) servo hydraulic press, (6) press head, (7) AE sensors (×4), (8) computer (for loading control), (9) valve, and (10) pressure gauge.