Casualties in the United States are primarily caused by rockfalls, rock slides, and debris flows.
Rotational slides (slumps) are landslides that oc-cur along a curved or spoon-shaped surface. Back-tilting may occur near the scarp of the landslide and there is often a toe of displaced material. Rotational slides often occur because the internal strength of the material is overcome by its own weight. TheyFile Size: KB. Over the years, many case studies have proven that the mass removal of large trees and vegetation has a had a drastic increase on the probability of landslides occurring (Heiken).
These studies have laid out several mechanisms of clear cutting that have contributed to the increase: Large trees provide strong root structures that penetrate. “landslide” the more restrictive use of the term refers only to mass movements, where there is a distinct zone of weakness that separates the slide material from more stable underlying material. The two major types of slides are rotational slides and translational slides.
Rotational slide: This is a slide in which the. Although the removal of root support is not likely to affect the overall stability of the slide mass, large clear-cuts (relative to slide size) could raise the ground water table and induce in-stability. Steep crownscarps and margins of the translational/ rotational slide and toe areas of large slides may be subject to debris sliding.
May 01, Tree removal, ongoing and planned, could destabilize the mountainsides. LOGGING AND LANDSLIDES. On March 22,a huge landslide destroyed the small Washington community of Oso. Rain was of course a factor, as was erosion at the base of the slope.
But it’s probable that tree-cutting above the slide area was an important factor bushhaul.barted Reading Time: 5 mins.
Apr 01, Hybrid models using ensemble techniques and J48 Decision Tree were developed for landslide susceptibility mapping. Results show that Rotation forest with J48 Decision Tree is the best for landslide susceptibility mapping compared with others.
Creep: Creep is the imperceptibly slow, steady, downward movement of slope-forming soil or rock.
Ensemble techniques indicate as promising techniques for better performance of landslide bushhaul.bar by: Jan 31, However, on steeper slopes (50º and 60º), tree planting reduced stability.
The pattern of planting of the trees changed their effectiveness in terms of reducing landslides. The most effective pattern was found to be dense, wide bands of trees with spaces between the bands.