Material Weakening of Slip Zone Soils Induced by Water Level Fluctuation in the Ancient Landslides of Three Gorges Reservoir

Table 2

Results of the liquid and plastic limits under different wet-dry cycles.

Cycle	Plastic limit (%)	Liquid limit (%)	Plastic index
0	17.15	33.78	16.63
1	15.88	36.95	21.07
2	15.70	34.50	18.80
3	15.70	34.10	18.40
4	15.95	34.20	18.25
5	16.64	33.90	17.26
6	16.80	34.00	17.20