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Innovative stabilization techniques for slope cuts on Shale

Innovative stabilization techniques for slope cuts on Shale

Innovative stabilization techniques for slope cuts on Shale

(OP)
Slope cuts on shale for road projects in the US/Canadian prairies are characterized by frequent progressive failures.  As a result, the final slopes of the cut will be stable at about 8H:1V to 10H:1V, as the residual friction angle of shale is ONLY in the order between 4 to 10 degrees. The shale in this area are generally soft, and appears like "soil", often with slickensided features. Water may usually the cause of initial landslides in such a slope.  

Anyone can provide some information on the latest techniques on how to stabilize these slopes without cutting into such a flat slope. Anything such as soil nailing, horizontal drainage system, geofibers, or other ideas which had been implemented for prevention of landslides in this type of slopes ?

Any info would be appreciated.  Thanks.  

RE: Innovative stabilization techniques for slope cuts on Shale

I recommend you contact a reputable ground improvement contractor (such as Nicholson or Hayward-Baker) for their experiences in this regard.

RE: Innovative stabilization techniques for slope cuts on Shale

I just learned of a new ground improvement method in a seminar that is used to provide slope stabilization, among other things. The product is called Rammed Aggregate Piers.  They have a website www.geopiers.com for more info.  Hope this helps.

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