Highway cutting landslide investigation
Highway cutting landslide investigation
(OP)
Can anyone advise me on what site investigation should be done in order to determine the cause of the failure?
The geology is is glacial clay deposits over lower coal measures.
The slip has lots of wet material, and there is a slow but continuous water flow through the slip.
The geology is is glacial clay deposits over lower coal measures.
The slip has lots of wet material, and there is a slow but continuous water flow through the slip.





RE: Highway cutting landslide investigation
the first one is drain
the second one is drain
the third one is drain
RE: Highway cutting landslide investigation
RE: Highway cutting landslide investigation
Sampling in a stiff fissured clay can be a problem if it's too hard for a Shelby tube.
You need to look at both peak strength and also residual strength. This may very well be a residual strength problem.
You need to fully evaluate secondary features in the clay, such as bedding, fissures and tension cracks.
If it's glacial terrain, you may find that the clay has failed in the past (the geologic past). It would be helpful to look for any bedding angles that may suggest rotational failures in the geologic past.
These are not simple problems and the geotechnical firm may outline a field program that ultimatly needs to be supplemented by additional data.
f-d
¡papá gordo ain't no madre flaca!
RE: Highway cutting landslide investigation
"The slip has lots of wet material, and there is a slow but continuous water flow through the slip. "
Enough said.
Now trying to determine the best fix, how to complete the construction, or if the mass should be stable in the current state, is the tougher question.
RE: Highway cutting landslide investigation