Geotechnical Characteristics and Stability Analysis of Rock-Soil Aggregate Slope at the Gushui Hydropower Station, Southwest China

Table 2

An example of shear strength test results for plate basalt and joint surface.

Type	No.	Physical characteristic	Peak value		Residual value
			Frication angle (°)	Cohesion (MPa)	Frication angle (°)	Cohesion (MPa)
Basalt	R-1	Weak weathering	51.12	2.20	43.62	1.61
	R-2	Weak weathering	51.78	2.25	45.00	1.68
Joint	J-1	Rigid	36.87	0.50	35.26	0.30
	J-2	Debris silted	22.29	0.21	21.31	0.17