Experimental Study on Strength, Acoustic Emission, and Energy Dissipation of Coal under Naturally and Forcedly Saturated Conditions

Figure 8

Variations of AE counts and cumulative counts with time of natural, naturally saturated and forcedly saturated coal samples. (a) Natural coal sample A8. (b) Natural coal sample A8. (c) Naturally coal sample B7. (d) Naturally coal sample B7. (e) Forcedly saturated coal sample C6. (f) Forcedly saturated coal sample C6.

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