Case Studies in Landslide Repair along Coastal and Riparian Areas

摘要

Landslides along our nation's waterways can present a real challenge to engineers, planners and designers. Many of the common tools available either present a large environmental impact or are not robust enough to handle the corrosion, scour, rapid drawdown, and wave action associated with riparian and coastal sites. Through four case studies from riparian/coastal projects across the United States (a coastal bluff erosion project using fiberglass soil nails near Crescent City, California; a landslide repair using launched drainage nails in Saskatchewan, Canada; a riparian landslide repair in Virginia using battered micropiles; and a lakeshore landslide repair along Lake Tahoe, California) new and innovative erosion control and landslide mitigation tools are presented. Those include soil nailing, high capacity tensioned wire mesh with vegetative mats, reinforced geologically sculpted shotcrete, scour micropiles, and fiberglass composite ballistic soil nails/horizontal drains.