Table 1: Parameters of rock mass of open-pit slopes.

Parameters	Symbol	Units	Marble	Diorite
Static elastic modulus	Ed0	GPa	16.22	18.37
Static tensile strength	σt0	GPa	12.11	13.82
Dynamic elastic modulus	Ed	GPa	26.76	30.31
Dynamic tensile strength	σt	GPa	16.47	18.80
Density	ρ	kg/m3	2710	2830
Poisson’s ratio	v	/	0.23	0.23