cover image: An Overview of Major Engineering Challenges for Developing Transportation Infrastructure in Northern

20.500.12592/7mvg4p

An Overview of Major Engineering Challenges for Developing Transportation Infrastructure in Northern

17 May 2022

The state of knowledge in permafrost science and engineering, the progress made and the remaining challenges are also highlighted in the paper. [...] (2020) summarized the fundamental knowledge and advances in this field of study, and differentiated the term “aufeis” to refer to the ice landform while “icing” is the general process by which aufeis is formed when water emerges from the subsurface and freezes. [...] These techniques provide better lateral support to the core of the embankment and limit failure occurring within the road surface (Doré and Zubeck 2009); however, berms have also been linked to permafrost degradation by increasing the embankment footprint and consequently the underlying ground temperatures and active-layer depth. [...] To extend the lifetime of culverts, the Yukon Department of Transportation proposes the use of geotextiles to reinforce the drainage structure and polystyrene to insulate the culvert granular cushion, thus limiting heat transfer from the running water to the ground below (Figure 5a). [...] For small buildings, the use of ventilation spaces under the buildings is generally sufficient to maintain cold ground conditions due to the cold air circulation in the winter and the shade at the ground surface in the summer (Figure 6a).
Pages
67
Published in
Canada