Computation and Analysis of High Rocky Slope Safety in a Water Conservancy Project

Table 3

Rock mechanic parameters of different rock structures.

Structure type	Compressive strength (MPa)	Deformation modulus (GPa)	Rock mass shear (break) parameters		Poisson’s ratio	Unit weight (g/cm^3)
				(MPa)
Granular structure	<22	0.1~0.45	0.35~0.55	0.04~0.06	0.42~0.48	<2.35
Fragmentation structure	22~55	0.45~1.2	0.57~0.68	0.17~0.43	0.34~0.42	2.42–2.63
Block structure	55~85	1.3~3.7	0.72~0.83	0.52~0.63	0.33~0.36	2.63–2.71
Country rock	105~110	12~16	1.03~1.21	1.35~1.57	<0.26	2.71