Applied Sciences,
Journal Year:
2025,
Volume and Issue:
15(9), P. 4716 - 4716
Published: April 24, 2025
The
reconstruction
and
utilization
of
old
salt
caverns
with
butted
wells
are
great
significance
for
accelerating
the
construction
large-scale
underground
energy
storage
facilities,
realizing
transformation,
achieving
“dual
carbon”
goals.
However,
renovation
work
butted-well
is
still
in
its
infancy,
facing
technical
bottlenecks
transformation
methods
operational
safety.
This
paper
takes
cavern
a
large
height
difference
Pingdingshan,
Henan
province,
as
research
object.
Through
theoretical
analysis
numerical
simulation,
feasibility
systematically
studied
from
aspects
gas
injection
brine
discharge
methods,
technology
parameters,
operation
stability.
results
show
that
drainage
method
closely
related
to
residue
utilization.
“one-injection-one-discharge”
suitable
difference,
considering
economy.
During
storage,
there
significant
deformation
differences
on
both
sides
cavity.
deeper
suffers
more
damage
has
weaker
stability
compared
shallower
one,
conventional
determining
operating
pressure
based
casing
shoe
limitations.
internal
pressures
this
salt-cavern
structure
basically
equal.
A
new
mode
these
large-height-difference
proposed:
taking
lower
limit
upper
one.
Based
analysis,
on-site
pilot
test
insights,
feasible.
study
provides
guidance
converting
into
structures
development
new-type
facilities.
Geological Journal,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Jan. 22, 2025
ABSTRACT
Underground
mining
in
mountainous
regions
presents
a
significant
geological
hazard,
characterised
by
the
occurrence
of
land
subsidence
and
movement
overlying
strata.
To
aggrandise
theory
mine
rock
mechanics,
we
conducted
systematic
investigation
into
deformation
failure
mechanisms
strata
as
well
patterns
surface
regions.
With
method
engineering
mechanics
theoretical
analysis,
supplemented
universal
distinct
element
code
(UDEC)
numerical
simulation,
status
Songzao
was
simulated
effectively.
Herein,
results
revealed
that
nonlinearity
field
occurred
during
mining,
evidenced
an
increase
when
coal
approached
seam
roof.
The
curve
underlying
lower
exhibits
inverted
trapezoid
pattern,
while
upper
overburden
displays
funnel‐shaped
trend.
Additionally,
upward
transmission
displacement
velocity
significantly
attenuated
due
to
shielding
effect
exerted
key
stratum
overburden,
resulting
greater
spatial
separation
from
critical
fractures
working
face
advanced
120
m,
subsequently
leading
vertical
cessation
subsidence.
value
speed,
however,
exhibited
gradual
progressed.
Due
influence
mountain
landforms,
convex
landforms
surpasses
concave
thereby
expediting
rate
hazards.
Water,
Journal Year:
2024,
Volume and Issue:
16(5), P. 740 - 740
Published: Feb. 29, 2024
This
research
examines
how
rainfall
and
mining
affect
the
slope
damage
resulting
from
transition
open-pit
to
underground
mining.
Using
an
unmanned
aerial
vehicle
(UAV),
Huangniu
of
Dexing
Copper
Mine
was
fully
characterized,
experiments
were
conducted
on
rock
samples
appropriate
sites.
First,
mechanical
properties
measured.
Then,
parameters
similarity
simulation
derived
based
theory.
Subsequently,
rainfall,
slope,
data
acquisition,
monitoring
systems
designed.
Finally,
mass
failure
with
different
angles
analyzed,
deformation
patterns
under
coupling
effect
obtained.
The
results
show
that
increases
pore
water
pressure
moisture
content.
Rainfall
slope-slip
have
more
impact
platform.
values
upper
rise
faster
than
inside
it.
In
stage,
shifts
slightly
left.
room
vertical
fractures
goaf
sinking
occur.
above
mine
form
a
semi-ellipse.
pillar
overlying
displacement
is
evident
persist.
continuous
collapses.
65°
model
most
damaged,
while
55°
least
damaged.
also
suggest
UAV
guides
sample
selection.
