Water,
Год журнала:
2025,
Номер
17(8), С. 1185 - 1185
Опубликована: Апрель 15, 2025
Rainfall
and
reservoir
water
level
(RWL)
fluctuations
are
the
most
important
factors
affecting
landslide
stability.
Although
extensive
research
has
explored
stability
under
combined
effect
of
rainfall
RWL
fluctuation,
quantitative
investigations
on
individual
contributions
fluctuation
to
limited.
To
address
this
issue,
taking
Majiagou
in
Three
Gorges
Region
(TGR)
as
an
example,
seepage
field
was
simulated
analyzed
three
different
scenarios:
rainfall;
fluctuation;
fluctuation.
The
corresponding
condition
scenarios
evaluated.
results
show
that
is
critical
factor
governs
landslide.
Specifically,
when
drops
rapidly
from
165
m
145
m,
with
average
rate
0.859
m/d,
safety
decreases
significantly.
reason
rapid
decline
creates
outward-directed
forces
promote
slope
deformation.
In
contrast,
a
limited
stability,
only
decreasing
exceeds
50
mm/d.
This
because
force
directed
outward
develops
reaches
certain
threshold,
leading
reduction
slope’s
factor.
addition,
study
reveals
generates
synergistic
amplification
mechanism.
variation
hydrological
conditions
significantly
arithmetic
sum
rainfall-induced
RWL-induced
variation.
helps
us
understand
how
affect
by
altering
field,
which
crucial
for
preventing
landslides.
Water Resources Research,
Год журнала:
2024,
Номер
60(1)
Опубликована: Янв. 1, 2024
Abstract
Pore
clogging
and
unclogging
in
porous
media
are
ubiquitous
subsurface
hydrologic
processes,
which
have
been
studied
extensively
at
various
scales
ranging
from
a
single
pore
to
porous‐medium
samples.
However,
it
remains
unclear
how
fluid
flow,
particle
rearrangement,
the
arching
effect
typical
of
cone‐shaped
geometry
interact
they
captured
by
pressure
drop
model
macroscopic
scale.
Here,
we
investigate
pore‐scale
feedback
mechanisms
between
flow
using
fully
resolved
fluid‐particle
coupling
approach
(lattice
Boltzmann
method‐discrete
element
method).
We
first
propose
use
truncated‐cone
represent
realistic
geometries
revealed
X‐ray
images
prepared
sand
packing.
Then,
our
simulations
indicate
that
cone
angle
significantly
influences
associated
with
process
enhancing
contacts
due
arching.
A
modified
Ergun
equation
is
developed
consider
this
geometric
effect.
At
microscale,
can
be
explained
interparticle
force
statistics;
few
particles
an
arch
(or
dome)
take
majority
hydrodynamic
pressure.
The
maximum
positively
proportional
Reynolds
number
negatively
tangent
angle.
Finally,
formula
established
utilizing
characteristics
compute
maximal
force.
Our
findings,
especially
accounts
for
resistance,
provide
guidance
applying
models
large‐scale
fines
transportation
issues,
including
seepage‐induced
landslides,
stream
bank
failure,
groundwater
recharge.
Journal of Rock Mechanics and Geotechnical Engineering,
Год журнала:
2023,
Номер
16(3), С. 1018 - 1032
Опубликована: Май 18, 2023
Thermo-poro-mechanical
responses
along
sliding
zone/surface
have
been
extensively
studied.
However,
it
has
not
recognized
that
the
potential
contribution
of
other
crucial
engineering
geological
interfaces
beyond
slip
surface
to
progressive
failure.
Here,
we
aim
investigate
subsurface
multi-physics
reservoir
landslides
under
two
extreme
hydrologic
conditions
(i.e.
wet
and
dry),
particularly
within
masses.
Based
on
ultra-weak
fiber
Bragg
grating
(UWFBG)
technology,
employ
special-purpose
optic
sensing
cables
can
be
implanted
into
boreholes
as
"nerves
Earth"
collect
data
soil
temperature,
water
content,
pore
pressure,
strain.
The
Xinpu
landslide
in
middle
reach
Three
Gorges
Reservoir
Area
China
was
selected
a
case
study
establish
paradigm
for
situ
thermo-hydro-poro-mechanical
monitoring.
These
UWFBG-based
were
vertically
buried
31
m-deep
borehole
at
foot
landslide,
with
resolution
1
m
except
pressure
sensor.
We
reported
field
measurements
covering
period
2021
2022
produced
spatiotemporal
profiles
throughout
borehole.
Results
show
years
are
more
likely
motivate
motions
than
dry
years.
annual
thermally
active
layer
critical
depth
roughly
9
might
move
downward
warmer
dynamic
groundwater
table
is
located
depths
9–15
m,
where
peaked
strain
undergoes
periodical
response
leap
withdrawal
hydrometeorological
cycles.
interface
behaviors
may
support
interpretation
regulation
slope
stability,
allowing
us
correlate
them
local
damage
events
global
destabilization.
This
paper
also
offers
natural
framework
interpreting
signatures
from
creeping
bank
slopes,
which
form
basis
monitoring
early
warning
system.
Geoscience Frontiers,
Год журнала:
2023,
Номер
15(2), С. 101773 - 101773
Опубликована: Дек. 20, 2023
The
implementation
of
isolated
heterologous
monitoring
systems
for
spatially
distant
borehole
deployments
often
comes
with
substantial
equipment
costs,
which
can
limit
the
effectiveness
geohazard
mitigation
and
georisk
management
efforts.
To
address
this,
we
have
developed
a
novel
system
that
integrates
fiber
Bragg
grating
(FBG)
microelectromechanical
(MEMS)
techniques
to
capture
soil
moisture,
temperature,
sliding
resistance,
strain,
surface
tilt,
deep-seated
inclination.
This
enables
real-time,
simultaneous
data
acquisition
cross-validation
analyses,
offering
cost-effective
solution
critical
parameters
in
geohazard-prone
areas.
We
successfully
applied
this
integrated
Xinpu
landslide,
an
active
super-large
landslide
located
Three
Gorges
Reservoir
Area
(TGRA)
China.
resulting
strain
profile
confirmed
presence
two
shallow
secondary
surfaces
at
depths
approximately
7
m
12
m,
respectively,
addition
depth
∼28
m.
lower
was
activated
by
extreme
precipitation,
while
upper
one
primarily
driven
significant
changes
reservoir
water
levels
secondarily
triggered
concentrated
rainfalls.
Anti-slide
piles
remarkably
reinforced
moving
masses
but
failed
control
ones.
gap
between
pile
heads
amplified
rainwater
erosion
effect,
creating
preferential
channel
infiltration.
Multi-physical
measurements
revealed
mixture
seepage-driven
buoyancy-driven
behaviors
within
landslide.
study
offers
dual-source
multi-physical
paradigm
collaborative
multiple
crucial
boreholes
on
large-scale
contributes
evaluation
improvement
engineering
measures
similar
geological
settings.
Buildings,
Год журнала:
2025,
Номер
15(4), С. 638 - 638
Опубликована: Фев. 19, 2025
Rainfall-induced
slope
instability
is
a
critical
challenge
in
geotechnical
engineering.
This
study
investigates
the
reinforcement
effect
of
anti-slide
piles
on
stability
under
rainfall
conditions
using
finite
element
numerical
simulations,
based
project
Youxi
County,
Fujian
Province.
The
MIDAS
GTS
NX
2019(v1.2)
software
was
employed
to
analyze
effects
pile
arrangements
safety
factors,
pore
water
pressure,
displacement
fields,
and
effectiveness.
results
showed
that
significantly
enhanced
by
mitigating
adverse
rainfall,
such
as
an
increased
pressure
reduced
soil
strength.
optimal
achieved
when
were
positioned
middle
sections
slope,
horizontal
x-direction
from
74.49
mm
(without
reinforcement)
7.42
mm,
achieving
reduction
90.0%,
effectively
reducing
plastic
strain
zones.
provides
valuable
insights
into
interaction
mechanisms
between
soil,
offering
practical
guidance
for
design
strategies
mitigate
rainfall-induced
failures.
Journal of Rock Mechanics and Geotechnical Engineering,
Год журнала:
2024,
Номер
16(9), С. 3395 - 3406
Опубликована: Март 19, 2024
To
consider
the
complex
soil-structure
interaction
in
a
pile-slope
system,
it
is
necessary
to
analyze
performance
of
systems
based
on
three-dimensional
(3D)
numerical
model.
Reliability
analysis
system
3D
modeling
very
challenging
because
computationally
expensive
and
function
pile
failure
mode
only
defined
safe
domain
soil
stability.
In
this
paper,
an
efficient
hybrid
response
surface
method
suggested
study
reliability
pile-reinforced
slopes,
where
support
vector
machine
Kriging
model
are
used
approximate
functions
failure,
respectively.
The
versatility
illustrated
detail
with
example.
For
example
examined
found
that
can
significantly
contribute
reinforcement
ratio
effectively
reduce
probability
failure.
There
exists
critical
beyond
which
not
sensitive
ratio.
spacing
affects
both
probabilities
slope.
optimal
location
length
for
stabilizing
piles.
Journal of Rock Mechanics and Geotechnical Engineering,
Год журнала:
2024,
Номер
unknown
Опубликована: Апрель 1, 2024
Understanding
the
stress
distribution
derived
from
monitoring
principal
(PS)
in
slopes
is
of
great
importance.
In
this
study,
a
miniature
sensor
for
quantifying
two-dimensional
(2D)
PS
landslide
model
tests
proposed.
The
fundamental
principle
and
design
are
demonstrated.
comprises
three
earth
pressure
gages
one
gyroscope,
with
utilization
three-dimensional
(3D)
printing
technology.
difficulties
installation
location
during
preparation
rotation
testing
can
be
effectively
overcome
using
sensor.
Two
different
arrangements
sensors
tested
verification
tests.
Additionally,
application
an
excavated-induced
slope
tested.
results
demonstrate
that
exhibits
commendable
performance
achieves
desirable
level
accuracy,
angle
error
±5°
transformation
model,
generated
by
excavation,
demonstrated
test
two
(MPS)
sensors.
has
significant
potential
measuring
primary
other
geotechnical
experiments.
