Materials,
Год журнала:
2022,
Номер
15(10), С. 3426 - 3426
Опубликована: Май 10, 2022
In
this
paper,
the
electrochemical
corrosion
behavior
of
X70
steel
in
saline
soil
under
capillary
water
was
simulated
by
a
Geo-experts
one-dimensional
column
instrument.
A
volumetric
content
sensor
and
conductivity
test
were
used
to
study
migration
mechanism
salt
(sodium
chloride)
water.
The
system
analyzed
testing
as
well
macroscopic
microscopic
morphology
steel.
results
showed
that
significantly
influenced
rise
particular,
wetting
front
during
meant
located
at
three-phase
solid/liquid/gas
interface
certain
location,
which
worsened
its
behavior.
addition,
after
stabilized,
salts
transported
with
top
column.
This
resulted
highest
environment
most
severe
location.
Applied Sciences,
Год журнала:
2025,
Номер
15(6), С. 3403 - 3403
Опубликована: Март 20, 2025
Under
the
action
of
freeze–thaw
cycles,
internal
temperature
and
water
distribution
slope
soils
in
cold
regions
change
significantly,
which
directly
affects
stability
slopes.
In
order
to
study
differences
hydrothermal
reactions
at
different
depths
their
impacts
on
This
establishes
both
a
model
coupling
model,
combining
field
measurements
with
numerical
simulations
examine
dynamic
changes
characteristics
within
slope.
The
results
indicate
that
variation
depth
can
be
divided
into
three
stages:
initial
freezing,
stable
thawing.
freezing
stage,
negative
gradient
drives
migrate
towards
front,
forming
segregated
ice
inducing
frost
heave.
thawing
latent
heat
released
by
phase
promotes
move
toe,
increasing
content
there
indirectly
exacerbating
risk
instability.
moisture
transfer
frozen
soil
slopes
shows
non-linear
characteristics.
unique
process
one-way
two-way
makes
rate
1.35
times
rate,
this
asymmetric
characteristic
is
key
understanding
mechanism
Remote Sensing,
Год журнала:
2023,
Номер
15(5), С. 1335 - 1335
Опубликована: Фев. 27, 2023
As
one
of
the
best
indicators
periglacial
environment,
ice-wedge
polygons
(IWPs)
are
important
for
arctic
landscapes,
hydrology,
engineering,
and
ecosystems.
Thus,
a
better
understanding
spatiotemporal
dynamics
evolution
IWPs
is
key
to
evaluating
hydrothermal
state
carbon
budgets
permafrost
environment.
In
this
paper,
ground
surface
deformation
(GSD)
in
IWP
zones
(2018–2019)
their
influencing
factors
over
last
20
years
Saskylakh,
northwestern
Yakutia,
Russia
were
investigated
using
Interferometric
Synthetic
Aperture
Radar
(InSAR)
Google
Earth
Engine
(GEE).
The
results
show
an
annual
rate
(AGSDR)
Saskylakh
at
−49.73
45.97
mm/a
during
period
from
1
June
2018
3
May
2019.
All
selected
GSD
regions
indicate
that
relationship
between
land
temperature
(LST)
positive
(upheaving)
with
larger
AGSDR,
negative
(subsidence)
lower
AGSDR.
most
drastic
was
observed
Aeroport
GSDs
rates
−37.06
tower
35.45
runway.
negatively
correlated
LST
low-centered
(LCPs)
high-centered
(HCPs).
Specifically,
higher
vegetation
cover,
thicker
active
layer.
An
evident
degradation
has
been
as
reflected
temperatures,
lusher
vegetation,
greater
layer
thickness,
fluctuant
numbers
areal
extents
thermokarst
lakes
ponds.
River,
Год журнала:
2024,
Номер
3(2), С. 166 - 180
Опубликована: Апрель 28, 2024
Abstract
In
seasonal
frozen
soil,
freezing
and
thawing
can
change
the
physical
mechanical
properties
affect
slope
stability.
There
are
complex
moisture
conditions
in
main
water
transfer
canal.
A
study
of
hydrothermal
evolution
canals
with
different
initial
contents
under
action
is
great
importance
for
prevention
control
canal
slides.
Hydrothermal
coupling
models
key
to
revealing
canal's
evolution.
As
some
modeling
parameters
current
model
based
on
empirical
values,
particularly
those
van
Genuchten
equation,
which
not
necessarily
related
soil
properties,
they
suitable
analyzing
canals.
This
paper
determines
soil‐water
characteristic
curve
from
cumulative
particle
gradation
subsoil,
then
hydraulic
subsoil
using
VG
model,
corrects
model.
The
method
modifying
original,
makes
more
realistically
reflect
drainage
characteristics.
During
channel
slopes
(21%,
25%,
29%,
33%,
37%,
41%),
temperature
field,
ice
content
distributions
were
investigated.
Using
V‐G
optimal
a
=
0.06,
n
1.2,
m
0.17,
distribution
trends
between
basically
similar.
Water
will
accumulate
at
bottom
as
liquid
increases
boundary.
Case Studies in Thermal Engineering,
Год журнала:
2024,
Номер
61, С. 105026 - 105026
Опубликована: Авг. 25, 2024
Triaxial
compression
tests
were
conducted
on
frozen
sandy
soils
under
a
constant
minimum
principal
stress
(σ3
=
1.6
MPa)
and
various
intermediate
stresses
(σ2
1.6,
3.4,
5.2,
7.0,
8.8,
9.8
MPa).
The
purpose
of
the
research
was
to
investigate
influence
mechanical
properties
soil,
establish
constitutive
model
predict
stress-strain
relationship
soil
complex
state.
test
results
obtained
demonstrated
that
crack
damage
failure
initially
increase
then
decrease
with
an
in
stress.
However,
initiation
exhibits
initial
up
specific
value,
after
which
it
stabilizes.
From
perspective
propagation,
mechanism
strength
discussed.
With
variation
state,
difference
between
strain
gradually
increases.
deformation
revealed
using
superposition
principle
Poisson's
effect.
Finally,
based
Weibull
distribution
Drucker-Prager
criterion
can
accurately
represent
relationships
true
triaxial
states.
Frontiers in Earth Science,
Год журнала:
2022,
Номер
10
Опубликована: Ноя. 7, 2022
The
soil
dielectric
constant
model
reflects
the
relationship
between
volumetric
water
content
and
constant.
ground
penetrating
radar
(GPR)
could
quickly,
precisely
non-destructively
obtain
state
of
layers.
A
reasonable
reliable
is
great
significance
for
predicting,
monitoring
exploring
migration
in
soils.
Taking
Yunnan
laterite
as
an
example,
this
study
comprehensively
considered
key
physical
factors
(dry
density,
content,
temperature)
situ
properties.
properties
influencing
has
been
discussed
with
laboratory
tests
by
reshaping
laterite,
was
finally
proposed
to
evaluate
natural
laterite.
results
show
that
relative
increases
gradually
increasing
dry
density
temperature
respectively.
most
important
factor,
secondly
followed
density.
built
based
on
influence
content.
multivariate
a
good
prediction
effect
effects
compared
other
existing
models
are
follows:
Multivariate
model,
Zhao
Malicki
Zhou
Topp
Liao
mode
Herkelrath
model.
This
be
applied
plastic
limit
index
liquid
using
constant,
then
estimate
soft
hard
grades
provide
reference
construction
different
regions,
convenient
way
estimation
engineering
categories.
