+1 vote
in Geotechnical Engineering II by (93.7k points)
Combing the three equations, \(\sqrt{((\frac{σ_z-σ_x}{2})^2+τ_{xz}^2))} -\frac{σ_z+σ_x}{2} sinφ=c cosφ\), \(\frac{∂σ_x}{∂x}+\frac{∂τ_{xz}}{∂z}=0\), and \(\frac{∂τ_{xz}}{∂x}+\frac{∂σ_x}{∂z}+γ=0\), lead to the equation called ___________

(a) Kolter’s equation

(b) Terzaghi’s equation

(c) Darcy’s equation

(d) Skempton’s equation

I got this question in an interview.

Origin of the question is Earth Pressure Introduction topic in section Failure Envelopes & Earth Pressure of Geotechnical Engineering II

1 Answer

0 votes
by (243k points)
Right choice is (a) Kolter’s equation

Explanation: The material just in the verge of flowing plastically is still in static equilibrium and will satisfy the equations of, \(\frac{∂σ_x}{∂x}+\frac{∂τ_{xz}}{∂z}=0, \,and\, \frac{∂τ_{xz}}{∂x}+\frac{∂σ_x}{∂z}+γ=0.\)  These equations with the Mohr Coulomb equation give the Kolter’s equation.

Related questions

We welcome you to Carrieradda QnA with open heart. Our small community of enthusiastic learners are very helpful and supportive. Here on this platform you can ask questions and receive answers from other members of the community. We also monitor posted questions and answers periodically to maintain the quality and integrity of the platform. Hope you will join our beautiful community
...