Research Article
Experimental Investigation on the Mechanical Response of Coals to Uniaxial Compression and Low-Speed Dynamic Loading
Figure 6
Acoustic emission of bituminous coal cores at different stress levels. (a) Original sample; (b) failure sample; (c) 20% σc; (d) 40% σc; (e) 80% σc; and (f) 100% σc, where σc is the compression strength.
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