Geosynthetics June/July 2021 - 15

HBR track rehabilitation and
permafrost considerations
Designing sustainable infrastructure
with limited engineering data is always
a challenge and more so when it comes
to where minimal interference to the
environment is desired. Rehabilitation
of the HBR line had similar challenges,
as it passes through several stretches of
permafrost. The rail line was damaged
by a flood that was triggered by melting
snow and rain, which was aggravated by
the degradation of the underlying permafrost.
This, compounded with the harsh
winter, shorter construction season and
linear construction sequence, demanded
a solution that could address all these
issues and complete the work within a
reasonable time and budget. A design
with NPA geocell reinforcement for the
railway embankment addressed several
issues like:
* Providing necessary structural
strength for the railway traffic
* Protecting the underlying permafrost
from further degradation
* Controlling erosion at the embankment
slopes against snowmelt and
creek flows
* Facilitating a linear construction
schedule
* Completing the project within the
available time and a significantly
lower budget
The postflood condition of the track
in spring of 2018 and preflood condition
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www.GeosyntheticsMagazine.com
15
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Geosynthetics June/July 2021

Table of Contents for the Digital Edition of Geosynthetics June/July 2021

Geosynthetics June/July 2021 - Cover1
Geosynthetics June/July 2021 - Cover2
Geosynthetics June/July 2021 - 1
Geosynthetics June/July 2021 - 2
Geosynthetics June/July 2021 - 3
Geosynthetics June/July 2021 - 4
Geosynthetics June/July 2021 - 5
Geosynthetics June/July 2021 - 6
Geosynthetics June/July 2021 - 7
Geosynthetics June/July 2021 - 8
Geosynthetics June/July 2021 - 9
Geosynthetics June/July 2021 - 10
Geosynthetics June/July 2021 - 11
Geosynthetics June/July 2021 - 12
Geosynthetics June/July 2021 - 13
Geosynthetics June/July 2021 - 14
Geosynthetics June/July 2021 - 15
Geosynthetics June/July 2021 - 16
Geosynthetics June/July 2021 - 17
Geosynthetics June/July 2021 - 18
Geosynthetics June/July 2021 - 19
Geosynthetics June/July 2021 - 20
Geosynthetics June/July 2021 - 21
Geosynthetics June/July 2021 - 22
Geosynthetics June/July 2021 - 23
Geosynthetics June/July 2021 - 24
Geosynthetics June/July 2021 - 25
Geosynthetics June/July 2021 - 26
Geosynthetics June/July 2021 - 27
Geosynthetics June/July 2021 - 28
Geosynthetics June/July 2021 - 29
Geosynthetics June/July 2021 - 30
Geosynthetics June/July 2021 - 31
Geosynthetics June/July 2021 - 32
Geosynthetics June/July 2021 - 33
Geosynthetics June/July 2021 - 34
Geosynthetics June/July 2021 - 35
Geosynthetics June/July 2021 - 36
Geosynthetics June/July 2021 - 37
Geosynthetics June/July 2021 - 38
Geosynthetics June/July 2021 - 39
Geosynthetics June/July 2021 - 40
Geosynthetics June/July 2021 - 41
Geosynthetics June/July 2021 - 42
Geosynthetics June/July 2021 - 43
Geosynthetics June/July 2021 - 44
Geosynthetics June/July 2021 - Cover3
Geosynthetics June/July 2021 - Cover4
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https://www.nxtbook.com/ifai/geosynthetics/geosynthetics-june-july-2021
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