Assessment of a Tailings Dam Breach by Experimental, Numerical, and Gene-Expression Programming Model
Arian Eghbali,
M Heydari Soltanabadi,
Mitra Javan
и другие.
Water Resources Management,
Год журнала:
2025,
Номер
unknown
Опубликована: Март 17, 2025
Язык: Английский
Source and Migration Pathways of Heavy Metals in Soils from an Iron Mine in Baotou City, China
Minerals,
Год журнала:
2024,
Номер
14(5), С. 506 - 506
Опубликована: Май 12, 2024
The
exploitation
of
iron
ore
could
cause
heavy
metals
pollution
in
the
soils,
which
threatens
ecosystem
and
human
health.
In
this
study,
soil,
stream
sediment,
tailings,
rock,
atmospheric
deposition
samples
were
collected
from
an
mine
Baotou
City.
concentrations
As,
Cd,
Cr,
Cu,
Hg,
Ni,
Pb,
Zn,
Al2O3,
CaO,
K2O,
MgO,
Na2O,
SiO2,
Fe2O3,
as
well
mineral
composition
metal
speciation
samples,
analyzed
for
assessment
source
identification
metals.
results
reveal
that
concentration
Cu
soils
was
significantly
higher
than
background
value,
unpolluted
to
moderately
polluted
state
main
level.
By
analyzing
relationship
between
Cu/Al2O3
CaO
different
characteristics
chemical
index
alteration
(CIA),
composition,
profiles,
suggest
tailings
soils.
distribution
sediments
indicated
hydraulic
transport
may
be
one
migration
pathways.
addition,
wind
also
a
pathway
migration.
Язык: Английский
A Detailed Reaction Mechanism for Thiosulfate Oxidation by Ozone in Aqueous Environments
Environmental Science & Technology,
Год журнала:
2024,
Номер
58(42), С. 18959 - 18968
Опубликована: Окт. 8, 2024
The
ozone
oxidation,
or
ozonation,
of
thiosulfate
is
an
important
reaction
for
wastewater
processing,
where
it
used
remediation
mining
effluents,
and
studying
aerosol
chemistry,
its
fast
rate
makes
excellent
model
reaction.
Although
ozonation
has
been
studied
since
the
1950s,
challenges
remain
in
developing
a
realistic
mechanism
that
can
satisfactorily
account
all
observed
products
with
sequence
elementary
steps.
Here,
we
present
novel
measurements
using
trapped
microdroplets
to
study
pH-dependent
kinetics.
We
detect
known
intermediates,
including
SO
Язык: Английский
Study on the Evolution Characteristics of Dam Failure Due to Flood Overtopping of Tailings Ponds
Water,
Год журнала:
2024,
Номер
16(17), С. 2406 - 2406
Опубликована: Авг. 27, 2024
There
has
been
a
frequent
occurrence
of
tailing
dam
failures
in
recent
years,
leading
to
severe
repercussions.
Flood
overtopping
is
an
important
element
contributing
these
failures.
Nevertheless,
there
scarcity
studies
about
the
evolutionary
mechanisms
breaches
resulting
from
flood
overtopping.
In
order
fill
this
knowledge
vacuum,
study
focused
on
characteristics
and
triggering
failures,
utilizing
Heshangyu
tailings
pond
as
prototype.
The
process
breach
evolution
was
revealed
by
conduction
small-scale
model
testing.
A
scaled-down
replica
constructed
at
ratio
1:150,
controlled
experiment
conducted
simulate
caused
water
overflowing.
Based
results,
following
conclusions
were
drawn:
(1)
rise
level
become
saturated,
liquefaction
flow
local
slope
sliding
initial
dam.
If
sediment-carrying
capacity
overflowing
exceeded
shear
strength
tailings,
erosion
would
accelerate
landslides
slope,
generating
sand-laden
flow.
(2)
primarily
influenced
erosion,
which
subsequently
resulted
both
laterally
widened
longitudinally
deepened
breach.
As
expanded,
sand-carrying
increased,
faster
rate
failure.
can
be
categorized
into
four
distinct
stages:
gully
formation
stage,
lateral
broadening
stage
gully,
cracks
collapse
surface,
stable
collapse.
(3)
outflow
spread
downstream
radial
pattern,
forming
alluvial
fan.
Additionally,
depth
deposited
mud
first
increased
declined
distance
grew.
findings
research
provide
basis
for
prevention
control
disasters
due
Язык: Английский