Laboratory Model Tests on Flow Erosion Failure Mechanism of a Slope Consisting of Anqing Group Clay Gravel Layer

Table 4

Stability coefficient of gravel fall of clay gravel layer slope.

Test number	Saturated cohesion of gravel layer (kPa)	Saturated friction angle of gravel layer (°)	Stability coefficient
A	15.8	19.3	0.829
B	16.4	18.6	0.850
C	13.6	17.3	0.717
D	15.8	19.3	1.513
E	16.4	18.6	1.541
F	13.6	17.3	1.313
G	15.8	19.3	2.316
H	16.4	18.6	2.356
I	13.6	17.3	2.012