Keywords: embankment, slope stability, strength, causes of failures, monitored parameters, depression curve, safety factor, expert evaluation

// Мелиорация.— 2019. – №4(90) – P 12—16

The analysis of the method of calculating the stability of slopes on circular cylindrical sliding surfaces is given. The absence of an unified approach to determine the hydrodynamic force of the filtration pressure was revealed. The analysis of two known methods is given. The error of the method which determines the filtration force in the same way as in the case of pressure filtration is shown. It is recommended to determine the considered force as an external volumetric filtration gradient directed along the current lines, which corresponds to the physical picture of the phenomenon. Comparative calculations using the most popular formulas at present are performed.