Research and application of high gas coal seam air leakage control technology based on polymer material cross-linking mechanism
Abstract
In
order
to
alleviate
the
problem
of
corner
gas
accumulation
caused
by
air
leakage
in
goaf
high
coal
seam.
The
rapid
film-forming
sealing
material
for
wall
and
grouting
roof
were
developed
optimized,
the'
plugging-injection'
combined
scheme
was
proposed.
orthogonal
experiment
designed
with
thickness
attenuation
ratio
plugging
film
at
12h
and24
h,
gel
viscosity,
adhesion,
setting
time
other
factors
as
indicators,
best
selected.
engineering
test
shows
that:
(1)
1.5%
sodium
alginate
solution
7.5%
calcium
chloride
can
be
sprayed
turn
quickly
form
a
stick
wall;
(2)
2.5%
polyvinyl
alcohol,
0.6%
borax
0.5%
thickener
mixed
into
water
stirred
obtain
polymer
slurry.
(3)
According
monitoring
results,
concentration
each
point
decreased
more
than
62%
after
using
material,
upper
67%.
50%,
57%.
formed
dynamic
combination
functions
above
two
types
optimized
new
materials
effectively
reduce
occurrence
overrun
accidents
working
face,
which
has
good
utilization
prospect.
Research Square (Research Square), Journal Year: 2024, Volume and Issue: unknown
Published: Aug. 6, 2024
Language: Английский