Hi,

i am currently doing a project where i used a bare soil slope model and rainfall simulation in the lab. all the slope eroded after the experiment. after that, i also tried to simulate the same model in plaxis 3D. i used the same data collected from the actual experiment. my issue is, after the rainfall simulation, the factor of safety increasing highly (5.9) whereas before rainfal it was (3.4). i have tried tweaking with stiffness, unit weights, cohesion but still the fos is coming higher after the rainfall than before. can anyone tell me why the fos coming very high? and, another issue is the pwp from the simulation is coming way higher than the data collected from actual experiment. can anyone help me with these issues? thank you.