The reinstatement of shallow slope failures can be costly and the potential for slips may be reduced by the use of vegetation planted to provide reinforcement, through the plant root system, and a reduction in moisture content and pore water pressure. This report summarises experiences on the establishment of vegetation for slope stability. This study includes a literature review to establish tree, shrub and herbaceous species that have the potential to grow in a highway environment, growing trials under controlled conditions, and the monitoring of a vegetated embankment trial. Studies on the highway network have included a survey of the use of vegetation reinforced steepened slopes and on the use of live willow poles to enhance stability of a clay slope on the A249. (Author/publisher)
Abstract