Water,
Год журнала:
2023,
Номер
15(5), С. 968 - 968
Опубликована: Март 2, 2023
Artificial
reclamation
is
one
of
the
main
means
land
expansion
in
coastal
cities.
However,
permeability
underlying
soft
clay
(USC),
derived
from
dredged
load,
has
not
been
paid
enough
attention,
although
it
closely
related
to
long-term
deformation
and
stability
foundation
soil.
Hence,
this
paper
analyzes
relationship
between
characteristics
microscopic
pore
USC
Chongming
East
Shoal
(CES),
a
typical
multi-phase
area,
through
variable
head
test,
mercury
intrusion
porosimetry
(MIP)
scanning
electron
microscope
(SEM)
test.
Furthermore,
grey
relation
entropy
Pearson
correlation
analysis
are
implemented
analyze
influence
micropore
parameters
on
permeability.
The
results
revealed
that
seepage
process
showed
transition
unstable
relatively
stable
seepage.
Meanwhile,
coefficient
(PC)
attenuated
with
time
cyclically,
indicating
alternating
effect
closed
opened
channels.
During
seepage,
particles
could
be
entrained
by
water
intercepted
pores,
thus
clogging
Then,
increased
pressure
break
new
degree
was
positively
correlated
average
cycle
period
PCs,
also
present
stage
PCs.
A
lower
mesopores
content,
higher
fractal
dimension,
aggregated
flocculate
microstructure
promote
result
efficiency.
Affected
channels,
may
face
potential
future,
which
needs
further
investigation.
ZAMM ‐ Journal of Applied Mathematics and Mechanics / Zeitschrift für Angewandte Mathematik und Mechanik,
Год журнала:
2025,
Номер
105(5)
Опубликована: Апрель 18, 2025
Abstract
The
dynamic
coupled
hydro‐thermo‐mechanical
behavior
of
the
unlined
structure
in
saturated
porous
under
extreme
geotechnical
and
geology
engineering
(e.g.,
underground
explosion,
laser
thermal
rock
breaking)
has
aroused
extensive
research
interests
constitutive
modeling
transient
responses
prediction.
Despite
current
models
that
have
been
historically
proposed,
model
construction
is
still
based
on
classical
thermoelastic
coupling
theory
(Fourier
heat
conduction
model).
In
study
transfer
environments,
flux
at
a
certain
point
not
only
affected
by
instantaneous
source
but
also
depends
temperature
gradient
effect
its
historical
flow.
To
address
this
deficiency,
work
aims
to
construct
new
introducing
multi‐dual‐phase
lag
law.
proposed
applied
investigate
structural
response
cylindrical
tunnel
poroelastic
medium
applying
Laplace
transformation
approach.
influences
parameters
wave
propagation
as
well
dimensionless
temperature,
displacement,
stress,
pore
water
pressure
were
evaluated
discussed.
Frontiers in Plant Science,
Год журнала:
2025,
Номер
16
Опубликована: Апрель 25, 2025
Straw
return
and
straw-derived
biochar
are
promising
practices
for
improving
soil
physicochemical
properties
crop
production.
However,
the
integrated
effects
of
a
single
application
on
moisture,
heat,
salinity
transport,
their
regulation
mechanism
water
use
efficiency
(WUE)
in
salt-affected
soils
still
understood
deeply.
Four
amendments
were
used:
control
without
any
additives
(CK),
direct
10
t
ha
-1
straw
(BJ),
treatments
15
(B15),
30
(B30).
Application
generally
increased
moisture
content
during
whole
growth
periods.
Temperature
top
cm
by
0.97°Cfor
B30
1.08°C
BJ
when
averaged
two
growing
seasons.
The
led
to
slight
reduction
pH
from
0~30
cm,
while
did
not
significantly
also
30-cm
depth
salinity.
desalting
ratio
at
maturity
decreased
slightly
first
season
but
second
across
years.
enhanced
yield,
WUE,
net
income.
These
improved
more
year
than
year.
two-year
average
WUE
profit
values
BJ.
Thus,
amendment
is
recommended
improve
water-heat
environment,
income
adjusting
degree
salinization.
Agronomy,
Год журнала:
2023,
Номер
13(9), С. 2367 - 2367
Опубликована: Сен. 12, 2023
The
Hetao
Irrigation
District
is
a
typical
salinized
irrigation
district
in
China,
and
soil
salinization
restricts
agricultural
development.
To
explore
the
spatial
temporal
variability
of
water
salt
coupling
relationship
District,
field
experiment
was
carried
out
at
scale
Yichang
branch
canal
downstream
District.
Fifty-three
sampling
points
were
established
to
analyze
content
total
using
geostatistics
degree
model.
results
showed
that
study
area
belonged
medium
weak
variability,
strong
variability.
theoretical
models
semi-variance
function
following
Gaussian
model,
with
block-base
ratio
less
than
25%,
autocorrelation,
correlation
gradually
increased
increase
depth.
interpolated
higher
accuracy
radial
basis
functions
as
compared
ordinary
kriging
interpolation.
In
terms
changes
salinity,
average
accumulation
rate
0–100
cm
layer
20.17%
when
salinity
from
May
June;
desalination
16.37%
decreased
June
August.
main
factors
affecting
cultivated
land
during
growing
period
irrigation,
precipitation,
planting
crops,
wasteland
precipitation
topography.
lower
land,
ranging
65.15%
86.59%
land.
level
coordination
marginal
for
disorder
wasteland.
provides
prevention
control
arid
areas.
Case Studies in Construction Materials,
Год журнала:
2023,
Номер
19, С. e02281 - e02281
Опубликована: Июль 5, 2023
The
essence
of
vibratory
compaction
high-speed
railway
graded
aggregate
(HRGA)
materials
lies
in
both
internal
particle
rearrangement
and
breakage.
However,
there
is
a
research
gap
on
the
level
breakage
effects
characteristics.
A
novel
index,
contribution
rate
Cb,
was
proposed
to
quantify
characteristics
based
theoretical
derivation.
Additionally,
relationship
between
gradation,
maximum
dry
density
(MDD)
Cb
established
using
high-performance
machine
learning
(ML)
model.
Finally,
impact
under
different
conditions,
including
vibration
parameters,
container
size,
sample
thickness,
explored
through
laboratory
tests
(LVCTs).
results
show
that
better
predicted
by
PSO-ANN-ML
model
(the
comprehensive
evaluation
index
testing
set
4.028).
Under
has
significant
important
effect
determining
actual
(ADD).
When
Cb>8.8%,
it
may
lead
over-compaction,
which
negative
overall
quality
compacted
structure.
Based
analysis
ADD,
recommended
frequency
should
be
inherent
sample,
while
ratio
excitation
force
static
load
controlled
at
1.8.
diameter
thickness
size
4.4
3.5,
respectively.
study
implications
for
control
understanding
mechanism.
Alexandria Engineering Journal,
Год журнала:
2023,
Номер
77, С. 657 - 667
Опубликована: Июль 19, 2023
The
salt
swelling
destruction
in
arid
sulfate
saline
soil
areas
represents
a
severe
problem
road,
railway,
and
foundation
engineering.
It
is
imperative
to
explore
potential
solution
solve
the
for
soil.
However,
vaporous
water
has
large
effect
on
forms
of
sodium
present
soil,
which
not
been
taken
into
account
by
existing
models.
This
work
proposes
an
improved
heat-water-vapour-salt
based
model
considering
effect.
Experiments
unsaturated
soils
were
conducted
validate
accuracy
model.
Besides,
effects
temperature,
content,
relative
humidity,
solute
concentration
reasonably
analyzed.
results
show
that
rate
increases
64%
when
humidity
reaches
60–90%;
once
exceeds
90%,
will
decline
0%.
Moreover,
follows
upward
convex
curve
along
decreases
with
increasing
liquid
content.
When
content
above
10%,
stable
at
around
0.3.
Overall,
more
accurate
predicting
than
model,
shows
exceptional
promise
providing
useful
insight
understanding
mechanism
prevention
soils.
