Slope stabilization is often required to retain soil in a natural, unstable slope or in man-made excavations. Keller draws on its extensive experience with the full range of techniques to provide optimal slope stabilization solutions for various projects.
- Stabilize natural or man-made slopes
Keller specializes in the stabilization of slopes using external support methods such as tieback anchors or micropiles. Keller can also utilize internal stabilization methods like soil nailing or various types of grouting to stabilize slopes. The repair of landslides or stabilization of natural or engineered embankment or fill slopes requires experienced personnel who have familiarity with the special requirements for this type of project.
Various types of soil or rock slopes may require stabilization during initial design or remedial repairs after a slope failure. Also, the repair of Mechanically Stabilized Embankment (MSE) walls is a specialty segment of this type of work. Slopes may fail for various reasons such as erosion, marine wave action or currents, rain and elevated ground water levels. Also, adjacent cuts or excavations, utility leaks, freeze/thaw or earthquakes can initiate unwanted slope failure.
Factor of Safety (FOS) is the ratio of the resisting forces divided by the driving forces for a slope. This ratio must be greater than 1.0 or the slope will fail. Typically, the static FOS should be 1.3-1.5 to prevent undesirable creep or movements of the slope. The factor of safety both statically and dynamically (earthquake loadings) can be substantially increased by providing external resisting forces to the slope by using tieback anchors with soldier piles or concrete reaction blocks. The FOS can also be increased by using soil nailing and/or various types of grouting to stabilize the slopes internally.
Many of these projects are performed design/build. Keller routinely provides these projects using design/build. We have a long resume of successfully completed complex slope stabilization projects.