Study on the Stability of Slopes Reinforced by Composite Vegetation Combined with a Geogrid under Rainfall Conditions

Table 4

Orthogonal test results of the slope safety factor.

Combining forms	Optimization parameters				Safety factor of slope
	Shrub reinforcement depth	Arbor anchoring depth	Arbor distribution form	Geogrid spacing	Rainfall 0 h	Rainfall 24 h
1	0.2	1	a	0.4	2.075	1.522
2	0.2	2	b	0.6	2.094	1.529
3	0.2	3	c	0.8	2.100	1.563
4	0.4	1	b	0.8	2.063	1.538
5	0.4	2	c	0.4	2.101	1.556
6	0.4	3	a	0.6	2.109	1.581
7	0.6	1	c	0.6	2.078	1.563
8	0.6	2	a	0.8	2.088	1.566
9	0.6	3	b	0.4	2.105	1.613