Documenting Best Management Practices for Cutslopes in Ice‐rich Permafrost 

In northern Alaska ice-rich permafrost is often encountered during the construction of roads and other projects. When ice-rich permafrost is exposed during late spring through early fall the potential for thawing is great. Ice-rich permafrost, typically silts with segregated ice or massive ground ice, experiences a substantial reduction in strength owing to the exceedingly high water content and lack of drainage and consolidation during thaw. The result can be a quagmire that “bogs down” equipment or, if the exposure is a cutslope, slope failure. In addition to trafficability and stability problems, environmental oversight increasingly focuses attention on particulate-rich effluent and poor aesthetics which are common by-products of the thaw process. This study presents several construction projects in northern Alaska where problems due to thawing permafrost were a significant environmental concern. The techniques employed or proposed to mitigate the problems are described and several best management practices are presented.


  • English


Subject/Index Terms

Filing Info

  • Accession Number: 01460322
  • Record Type: Research project
  • Source Agency: Alaska Department of Transportation and Public Facilities
  • Contract Numbers: T2-07-04
  • Files: RiP, STATEDOT
  • Created Date: Jan 3 2013 1:22PM