Characteristics and mechanism of a catastrophic landslide-debris flow disaster chain triggered by extreme rainfall in Shaanxi, China
Natural Hazards,
Год журнала:
2024,
Номер
120(8), С. 7597 - 7626
Опубликована: Март 15, 2024
Язык: Английский
Optimising landslide trigger analysis through integration of diverse dendrogeomorphic approaches and multi-source climate and documentary data
Landslides,
Год журнала:
2024,
Номер
unknown
Опубликована: Ноя. 29, 2024
Язык: Английский
UAV and field survey investigation of a landslide triggered debris flow and dam formation in Eastern Carpathians
Frontiers in Earth Science,
Год журнала:
2024,
Номер
12
Опубликована: Июнь 7, 2024
In
the
May–August
period
of
2010,
major
heavy
rains
impacted
Eastern
Carpathians
(Northeastern
Romania),
leading
to
flash
floods
and
triggering
numerous
landslides.
The
extreme
weather
conditions
caused
damage
road
network,
extensive
forest
destruction,
lead
formation
impounded
lakes.
One
hardest-hit
areas
was
mountain
tributaries
catchments
Bistrița
watershed.
Particularly,
most
significant
landslide-triggered
debris
flow
event
occurred
in
upper
Iapa
valley
(Neamț
County).
landslide
process
started
near
top
Drumul
Chinezilor
ridge
Goșmanu-Geamăna
Massif
(Tarcău
Mountains),
at
an
elevation
875
m
a.s.l.,
flow-slide
fan
obstructed
a
300-m
section
watercourse
615
a.s.l.
This
study
compiles
climatic,
anthropogenic,
geological,
geomorphological
evidence
gathered
during
field
investigation
October
2023
utilizes
Unmanned
Aerial
Vehicle
(UAV)
data
collected
reconstruct
event.
Additionally,
it
explores
considerations
regarding
reactivation
processes,
dam
stability,
future
evolution
lake
(Făgețel
Lake:
water
surface
area
9,500
2
;
maximum
depth
10
m).
Furthermore,
lessons
learned
actions
required
prevent
further
mass
movement
associated
with
processes
prone
are
discussed.
Язык: Английский
Impact of the Source Material Gradation on the Disaster Mechanism of Underground Debris Flows in Mines
Sustainability,
Год журнала:
2024,
Номер
16(20), С. 8788 - 8788
Опубликована: Окт. 11, 2024
In
mines
where
the
natural
caving
method
is
used,
frequent
occurrence
of
underground
debris
flows
and
complex
mine
environments
make
it
difficult
to
prevent
control
flows.
The
source
one
critical
conditions
for
formation
flows,
studying
impact
material
gradation
on
debris-flow
disasters
can
effectively
help
these
occurrences.
This
paper
describes
a
multiscale
study
using
physical
model
experiments
discrete-element
(PFC3D)
understand
disaster
mechanism
from
macroscopic
microscopic
perspectives.
Macroscopically,
an
increase
in
content
medium
large
particles
will
enhance
instantaneous
destructive
force.
Large
more
easily
cause
than
fine
with
same
content,
but
disaster-causing
ability
minimized
when
contents
exceed
50%
60%,
respectively.
With
increasing
particle
long-distance
duration
increased.
On
level,
source-level
pairs
affect
initial
flow
mode,
concentration
area
force
chain,
average
velocity,
runout
distance,
change
energy
flow.
Among
them,
proportion
significantly
affects
kinetic
energy,
dissipative
time
reach
peak
coincidence
gravitational
potential
energy.
process
be
divided
into
“sudden
stage”,
“continuous
“convergence
accumulation
stage”.
work
reveals
close
relationship
between
highlights
necessity
considering
prevention
It
provide
important
basic
theory
environmental
urban
sustainable
development.
Язык: Английский