Sustainability,
Год журнала:
2024,
Номер
16(22), С. 9912 - 9912
Опубликована: Ноя. 14, 2024
The
construction
of
underground
reservoirs
in
coal
goaf
is
a
new
technology
aimed
to
realize
the
sustainable
development
mining-water
storage-surface
ecology
arid
areas
northwest
China.
key
feasibility
this
that
mining
cannot
affect
near-surface
aquifer,
and
amount
water
entering
reservoir
must
meet
needs
mine.
Taking
Buertai
Coal
Mine,
one
largest
mines
world,
as
an
example,
article
used
similar
simulation,
numerical
simulation
in-situ
test
methods
study
height
water-conducting
fracture
zone
overlying
strata
inflow
reservoirs.
results
show
that,
under
repeated
22-
42-coal
seams,
maximum
178
m,
distance
between
aquifer
42
about
240
so
has
little
effect
on
aquifer.
During
period
22-coal
seam,
groundwater
Zhidan
Zhiluo
Formations
was
mainly
discharged
vertically,
while
Yanan
Formation
horizontal
flow
during
mining.
In
way,
total
Mine
reaches
500
m3/h,
which
not
only
meets
mine,
but
also,
rest
can
irrigate
98
hectares
farmland
nearby.
Underground
could
achieve
mining,
storage
surface
semi-arid
areas.
Abstract
The
Kuye
River
Basin
has
experienced
a
rapid
depletion
of
groundwater
due
to
the
increased
coal
production.
In
this
study,
by
introducing
empirical
equations
derived
from
three
zone
theory
in
mining
industry
China
as
boundary
condition,
calculation
model
was
developed
coupling
soil
and
water
assessment
tool
visual
modular
three‐dimensional
finite‐difference
ground‐water
flow
(SWAT‐VISUAL
MODFLOW).
applied
several
mines
basin
quantify
impact
underground
mining.
For
illustration
purposes,
two
observation
stations
one
level
station
were
selected
for
change
simulation
2009,
producing
results
that
agreed
well
with
observed
data.
We
found
closely
related
height
fractured
water‐conducting
caused
mining,
higher
led
lower
level.
This
finding
further
supported
responsible
23.20
mm
aquifer
breakages
2009.
Thus,
preventing
surface
subsidence
can
help
protecting
basin's
groundwater.
