Simple Coefficient of Friction in calculating anchor block resistance 1

[Sailor_A380]

Hi Team, I have a soft marine mud with undrained shear strength equal to 10kPA (conservative). How can I get a simple Coefficient of Friction to enable me to calculate the resistance of a 5 tonne anchor block to a horizontal pull?

 

[GeoEnvGuy]

The undrained shear strength is giving you the cohesive strength where phi=0 or friction is zero. Based on your description you would want to know the coefficient of adhesion.

 

[Sailor_A380]

Thanks @GeoEnvGuy for reply, unfortunately I did not articulate message as clearly as I should have with an incorrect word. What I am trying to understand is, I have been given the following information: If the 2000kg block (submerged weight 1146kg) is embedded in even a soft silt seabed, undrained cohesive strength taken at cu=10kPa, the available passive earth pressure resistance is 12kN plus the shear resistance across the base calculated at 22.5kN giving a total resistance of 34.5kN. Is there a simple calc for me to get an understanding for the likely resistance in similar conditions if I up the block weight to 2500kg, 3000kg and 3500kg?

 

[Lomarandil]

By the time you have displaced and developed passive earth pressure, you will have remolded the seabed under the block. I'm no expert, but I would not count on both sources of resistance.

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just call me Lo.

 

[johnie134]

use 0.3