Experimental Investigation on the Deformation, Strength, and Acoustic Emission Characteristics of Sandstone under True Triaxial Compression

Figure 12

Strain characteristics of rock damage point and peak point under true triaxial compression: (a) axial strain; (b) lateral strain (the intermediate principal stress direction); (c) lateral strain (the minimum principal stress direction); (d) volumetric strain.

(a)

(b)

(c)

(d)