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

Table 1

Orthogonal test scheme.

Test number	Gravel content (%)	Slope ratio	Rainfall intensity (mm/h)
A	30	1 : 0.5	180
B	50	1 : 0.5	100
C	70	1 : 0.5	140
D	30	1 : 1.5	100
E	50	1 : 1.5	140
F	70	1 : 1.5	180
G	30	1 : 2.5	140
H	50	1 : 2.5	180
I	70	1 : 2.5	100