Table 5 Erodibility coefficient and critical shear stress obtained by linear regression and comparison between the fitting critical shear stress values and the calculation results from Eq. (15).
From: Estimating the critical shear stress for incipient particle motion of a cohesive soil slope
No | Results obtained by linear regression | Critical shear stress calculated by Eq. (15) (Pa) | Relative error (%) | Absolute error (Pa) | |
|---|---|---|---|---|---|
Erodibility coefficient kd (× 10−3 s/m) | Critical shear stress τc (Pa) | ||||
Sample-1 | 1618.91 | 0.1063 | 0.1250 | − 14.96 | − 0.0187 |
Sample-2 | 190.38 | 0.3177 | 0.2810 | 13.06 | 0.0367 |
Sample-3 | 3213.99 | 0.0856 | 0.1162 | − 26.33 | − 0.0306 |
Sample-4 | 2.87 | 0.0784 | 0.1151 | − 31.89 | − 0.0367 |
Sample-5 | 3.23 | 3.3421 | 3.2095 | 4.13 | 0.1326 |
