Numerical Investigation of Acoustic Emission Events of Argillaceous Sandstones under Confining Pressure

Table 1

Test results for the specimens.

Specimen number
I-1	0.5	19.55	20.11	0.194
II-1	0.5	18.86	20.70	0.216
III-1	0.5	18.23	21.67	0.235
I-2	2.0	20.97	20.64	0.204
II-2	2.0	21.02	19.87	0.174
III-2	2.0	20.14	20.24	0.210
I-3	4.0	24.60	22.16	0.224
II-3	4.0	25.47	21.25	0.195
III-3	4.0	24.31	22.04	0.203
I-4	6.0	29.08	21.88	0.201
II-4	6.0	30.35	22.87	0.214
III-4	6.0	29.67	21.41	0.224

Note. : principal stress; : confining pressure; : peak deviatoric stress; : Young’s modulus; : Poisson’s ratio.