Buildings,
Год журнала:
2024,
Номер
14(11), С. 3612 - 3612
Опубликована: Ноя. 13, 2024
In
low-temperature
stable
permafrost
regions,
both
active
and
passive
cooling
measures
are
commonly
employed
to
ensure
the
long-term
stability
of
highway
structures.
However,
despite
adopting
these
measures,
various
types
structural
issues
caused
by
degradation
remain
prevalent
in
high-grade
highways.
This
indicates
that
addition
preventing
melting,
reinforcement
foundation
is
still
necessary.
Based
on
analysis
temperature
field
settlement
using
finite
element
method,
which
was
validated
through
an
indoor
top-down
freeze–thaw
cycle
test,
this
paper
explores,
for
first
time,
feasibility
applying
geosynthetic-encased
gravel
pile
composite
foundations—previously
used
destruction—in
areas
where
protection
primary
principle.
By
analyzing
field,
behavior,
pile–soil
stress
ratios
foundations
influenced
structure
foundation,
it
found
when
diameter
0.5
m,
spacing
2
length
11
mean
monthly
ground
will
not
be
significantly
affected.
Therefore,
properly
designed
can
adopted
regions
protection,
rather
than
destruction,
required.
Scientific Reports,
Год журнала:
2024,
Номер
14(1)
Опубликована: Март 23, 2024
Abstract
In
this
study,
the
ecological
impact
of
human
activities
and
space
occupied
by
construction
arable
land
on
Tibetan
Plateau
were
examined,
focusing
changes
in
net
primary
productivity
(NPP)
as
a
key
indicator
health.
With
utilization
use
data
multiyear
average
NPP
from
2002
to
2020,
we
analyzed
effects
conversion
zonal
vegetation
into
carbon
sequestration
oxygen
release
Chengguan
District,
Lhasa
city.
Our
findings
indicated
marked
spatial
difference
among
different
types.
Regarding
original
vegetation,
ranged
0.2
0.3
kg/m
2
.
Construction
showed
decrease
NPP,
with
values
ranging
0.16
0.26
,
suggesting
productivity.
Conversely,
exhibited
an
increase
exceeding
This
suggested
enhanced
productivity,
particularly
regions
where
provided
lower
values.
However,
may
not
necessarily
indicate
positive
change.
fact,
such
increases
could
potentially
disrupt
natural
balance
ecosystems,
leading
unforeseen
consequences.
The
0.12
0.43
higher
stability
adaptability
than
other
wider
range
emphasizes
inherent
resilience
native
which
sustain
diverse
functions
under
varying
environmental
conditions.
These
demonstrate
urgent
need
for
sustainable
management
Plateau.
study
highlights
importance
considering
regional
development
strategies,
ensuring
preservation
enhancement
unique
fragile
plateau
ecosystem.
Earth Surface Processes and Landforms,
Год журнала:
2023,
Номер
49(2), С. 918 - 932
Опубликована: Ноя. 2, 2023
Abstract
Permafrost,
known
for
its
high
sensitivity
to
climate
change
and
human
activities,
plays
a
crucial
role
in
comprehending
the
environmental
sustainability
of
Arctic
cities.
Yakutsk,
being
largest
city
situated
continuous
permafrost,
has
suffered
irreversible
damage
surface
buildings
due
widespread
permafrost
thaw.
Therefore,
it
is
imperative
conduct
detailed
monitoring
assessment
deformation
ensure
stable
operation
building
facilities
plan
urban
development
above
permafrost.
This
study
utilized
138
scenes
Sentinel‐1B
images
captured
between
2017
2021
process
variations
Yakutsk
using
Persistent
Scatterer
Interferometric
Synthetic
Aperture
Radar
(PS‐InSAR)
method.
The
rate
map
reflects
that
area
undergoing
extensive
subsidence.
cumulative
time
series
maps
effectively
trace
temporal
spatial
evolution
deformation,
with
highest
subsidence
rates
exceeding
40
mm/year
maximum
250
mm.
In‐depth
analysis
obtained
results
indicated
degradation,
primary
reason
thawing
foundation
soils
degradation
ice‐bearing
provides
basic
data
investigation
geohazards
caused
by
Yakutsk.
Remote Sensing,
Год журнала:
2024,
Номер
16(22), С. 4288 - 4288
Опубликована: Ноя. 17, 2024
Highways
and
their
surrounding
areas
in
mountainous
plateau
regions
are
particularly
susceptible
to
environmental
changes,
which
can
significantly
impact
safety.
In
the
context
of
global
warming,
magnitude
changes
around
highways
has
been
further
amplified.
These
disturbances
pose
substantial
risks
highway
infrastructure
regions.
By
using
satellite
data
remote
sensing
techniques,
this
study
focused
on
variations
Du-Ku
Highway
(DKH)
Tianshan
Mountains
preliminary
revealed
shifts
surface
water,
land
temperature
(LST),
normalized
difference
vegetation
index
(NDVI),
dryness
(TVDI)
since
2000.
The
quantitative
results
showed
that
water
bodies
with
area
between
0.1
0.5
ha
showing
most
significant
growth
DKH.
LST
values
primarily
distributed
280
285
K,
while
NDVI
mostly
below
0.4,
TVDI
is
mainly
concentrated
at
two
extremes.
warming
its
amplified
regions,
these
findings
offer
critical
insights
directly
support
construction
maintenance
strategies
by
identifying
indicators,
providing
a
scientific
foundation
for
making
data-driven
decisions.
Permafrost and Periglacial Processes,
Год журнала:
2024,
Номер
unknown
Опубликована: Дек. 10, 2024
ABSTRACT
Research
in
geocryology
is
currently
principally
concerned
with
the
effects
of
climate
change
on
permafrost
terrain.
The
motivations
for
most
research
are
(1)
quantification
anticipated
net
emissions
CO
2
and
CH
4
from
warming
thaw
near‐surface
(2)
mitigation
infrastructure
such
thaw.
Some
effects,
as
increases
ground
temperature
or
active‐layer
thickness,
have
been
observed
several
decades.
Landforms
that
sensitive
to
creep
deformation
moving
more
quickly
a
result,
Rock
Glacier
Velocity
now
part
Essential
Climate
Variable
Permafrost
Global
Observing
System.
Other
example,
occurrence
physical
disturbances
associated
thawing
permafrost,
particularly
development
slumps,
noticeably
increased
since
2010.
Still,
others,
erosion
sedimentary
coasts,
accelerated.
Geochemical
groundwater
trace
elements,
including
contaminants,
those
issue
release
sediment
particles
during
mass
wasting
become
evident
2020.
Net
within
two
decades
and,
worldwide,
may
reach
equivalent
large
industrial
economy.
immediate
local
concerns
waste
disposal
pits
were
constructed
premise
would
be
an
effective
permanent
containment
medium.
This
assumption
no
longer
valid
at
many
contaminated
sites.
role
ice
conditioning
responses
changes
thermal
hydrological
regimes
has
re‐emphasized
importance
regional
conditions,
landscape
history,
when
applying
results
practical
problems.
