Stability Assessment of the Excavated Rock Slope at the Dagangshan Hydropower Station in China Based on Microseismic Monitoring

Table 2

Mechanical properties of the rock mass.

Material number	Density (g·cm^−3)	Compressive strength (MPa)	Deformation modulus (GPa)	Poisson’s ratio	Friction factor	Cohesion (MPa)
II	2.65	70∼80	18.00∼25.00	0.25	1.30	2.00
III1	2.62	40∼60	9.00∼11.00	0.27	1.20	1.50
III2	2.62	40∼60	6.00∼9.00	0.30	1.00	1.00
IV	2.58	20∼40	2.50∼3.50	0.35	0.80	0.70
XL-316	2.45	<15	0.25∼0.50	>0.35	0.50	0.20
f231	2.10	<10	0.20	>0.35	0.40	0.18