Failures in slopes can occur at any time and be triggered by natural events such as heavy rainfall or erosion.Climate change could exacerbate these problems, increasing the likelihood of failure.
However, construction activities such as excavation at the toe of a slope, surcharging the crest, changing the drainage regime or removal of vegetation cover, can also trigger instability in slopes.
Geo-Environmental have a team of highly qualified geotechnical engineers and engineering geologists, who have the technical skill to assess a slope and its specific conditions and to progress the assessment from site investigation to final modelling. Our engineers also have experience with carrying out back analysis on slopes that have already failed to determine the cause and recommendations on remedial measures.
Performing the modelling allows us to advise our clients on the best solution for their slope design. This advice can include measures such as:
- Improved drainage to enhance stability by controlling the flow of water;
- Planting appropriate vegetation to effectively bind the slope;
- Reducing the surcharge at the crest – by using lightweight fills;
- Increasing the surcharge on the toe at the bottom of the slope;
- Soil stabilisation e.g., with cement;
- Using geotextiles to reinforce the earth or soil nailing;
- Reducing the height of the slope; and
- Reducing the angle of the slope.
- Advice on retaining wall design