Creep Structure Effect of Layered Rock Mass Based on Acoustic Emission Characteristics

Table 3

Instantaneous elastic modulus of rock samples at different stress levels.

Angle	12 MPa	24 MPa	36 MPa	48 MPa	60 MPa	72 MPa
0	8.1	23.1	35.2	35.2	35.2	39.1
30	9.9	36.4	33.3	32.4	32.5	—
45	10.8	35.3	40	—	—	—
60	16.5	30.0	37.5	41.4	—	—
90	18.2	44.4	60	75	76.9	77.8