Dynamic Properties and Dynamic Response Model of Jointed Granites by Cyclic Loading

Table 3

Growth margin of dynamic elastic modulus of samples with confining pressure.

Name	Confining pressure σ (MPa)
	5–10 Mpa (%)	5–20 Mpa (%)	5–30 Mpa (%)
Single jointed 30° samples	7.9	12.8	19.4	Maximum increase in dynamic elastic modulus
Single jointed 60° samples	6.8	20.5	27.5
Double jointed 30° samples	10.9	14.4	24.0