The Coupling Effect of Pore Water Pressure and Pore Water Gravity in Unsaturated Soils under Rainfall Condition and Its Influence on Slope Stability

Figure 1

Pore water pressure and pore water gravity in unsaturated soils changing with saturation. (a) The pore water gravity is small, and the matrix suction is large. (b) The pore water gravity is large, and the matrix suction is small.

(a)

(b)