Applied Sciences,
Год журнала:
2024,
Номер
14(15), С. 6691 - 6691
Опубликована: Июль 31, 2024
In
the
hot
press
process
of
high-performance
bamboo-based
fiber
composites,
there
is
a
highly
nonlinear
relationship
between
production
parameters
and
quality
finished
boards.
Consequently,
it
challenging
to
accurately
predict
boards
based
on
given
parameters,
equally
difficult
preset
achieve
desired
board
quality.
The
current
approach
relies
manual
experience,
which
may
result
in
subpar
material
waste.
To
address
these
issues,
this
paper
proposes
bi-directional
prediction
model
cHGWO-SCA-SVR,
using
collaboration-based
hybrid
GWO-SCA
optimizer
optimize
relevant
SVR,
then
predicting
both
directions.
Finally
cHGWO-SCA-SVR
achieves
an
average
R2
0.9591
for
forward
lower
MAE
MSE
values
compared
other
models;
reverse
model,
attains
0.9553
models.
results
demonstrate
superiority
comparison
with
existing
models,
proving
its
significance
guiding
composites
by
compression.
Grouting
technology
is
crucial
for
controlling
rock
deformation
and
ensuring
stability
in
underground
engineering.
In
this
study,
the
grouting
simulation
experiments
were
implemented
using
superfine
cement
(SC)
a
water-soluble
modified
resin
(MR)
as
slurries
to
evaluate
anti-seepage
effect
of
broken
coal.
The
nuclear
magnetic
resonance
(NMR)
conducted
analyze
pore
structures
various
grouted
specimens.
accordance
with
NMR
results,
multifractal
characteristics
types
within
specimens
identified
geometric
fractal
method.
results
showed
that
dimension
Ds,
based
on
seepage
pore,
ranged
between
2
3,
accompanied
by
high
R2
values,
effectively
reflecting
structure
distribution
characteristics.
Specifically,
Ds
values
MR
specimen
are
closer
porosity
SC
2.12
times
greater
than
specimens,
indicating
superior
efficacy
material.
Moreover,
uniaxial
compressive
demonstrate
mechanical
strength
strain
capacity
exceed
those
This
finding
implies
lower
denser
contribute
enhanced
homogeneity
coal,
thereby
bolstering
overall
structural
integrity.
Therefore,
NMR-based
method
can
be
regarded
scientific
feasible
approach
evaluating
coal
actual
Applied Sciences,
Год журнала:
2024,
Номер
14(13), С. 5389 - 5389
Опубликована: Июнь 21, 2024
Pile
tip
post-grouting
technology
has
been
widely
adopted
in
pile
foundations
to
improve
its
bearing
characteristics.
Grouting
the
leads
grouting
cement
spreading
along
body
a
certain
extent.
To
better
understand
grout
diffusion
mechanism
returned,
total
of
45
groups
laboratory
model
tests
were
carried
out
on
sand,
with
different
pressures,
volumes,
and
soil
stress
histories
taken
into
account.
By
comparing
characteristics
grouted
bulbs,
returned
was
revealed.
Combined
test
results,
simplified
describe
pattern
corresponding
mode
during
process
proposed.
This
can
comprehensively
reflect
body,
conditions
