Physics of Techniques for Roadbuilding on Permafrost Essay -- physics

edifice safe, adequate, indestructible passs over permafrost soil presents unique challenges to the expression industry. It is not suprising that the mechanisms that fraud behind these challenges ar explained by the laws of physics. Consequently, as concerned professionals from the engineering federation tone for inovative ways to deal with the permafrost specter, it is in the realm of physics where they look for the elusive techniques that will enable the extension of the transportation infastructure into the northcountry in a safe, efficient, wise, and economic way.This paper will explore the techniques used to build road embankments over frozen soil. In exploring these techniques, every effort will be made to demonstrate the physical concept that is pertinent.But prior to our run of diferent methods of permafrost resistent roadbuilding techniques we must start by going back to basics. To understand the construction methodology of arctic roadbuilding we need to understand the mechanics and properties of permafrost. Its All nearly Heat * What is Permafrost? Permafrost is defined as institute that has been at a temperature beneath the freezing point of water for more than two years. A expectant portion of the ground in Alaska is defined as permafrost (some estimates say as much as 80 percent). Permafrost can extend to a deepness of several hundred feet, or it can be as bitty as several feet deep. * Is there permafrost in Fairbanks? Yes. We live in an field of operations defined by discontinuous permafrost. This classification refers to the fact that some of the ground is frozen, and some of it is not. Also, it is important to note that the permafrost in this area is known as warm permafrost. Warm permafrost is at a temperatur... ...ely be used.Both of these systems are currently being experimented with. Time will tell if these promising techniques pull up stakes an economical means of constructing roads over frozen ground. BibliographyE xperimental roadwayways on Permafrost, McHattie, Esch, Zarling, Conner, Goering, State of Alaska Department of Transportation and Public Facilities, July 1983ACE and Thermosyphon Design Features Loftus Road Extension Project, Goering, State of Alaska Department of Transportation and Public Facilities, December 2001Permafrost at the Geological Survey of Canada, http//sts.gsc.nrcan.gc.ca/permafrost/Alaska DOT Deals With Permafrost Thaws, Stidger, Ruth,Better Roads , June, 2001Permafrost, A Problem of Building in Alaska, Seibert, Alaska Co Operative Extension ServiceThe Permafrost Investigation ,Jernstrom, Alaska trapping and Finance Corporation