Research Square (Research Square),
Journal Year:
2023,
Volume and Issue:
unknown
Published: Dec. 4, 2023
Abstract
The
rapid
development
of
the
city
leads
to
continuous
updating
ratio
land
use
allocation,
especially
during
flood
season,
which
will
exacerbate
significant
changes
in
spatial
and
temporal
patterns
urban
flooding,
increasing
difficulty
forecasting
early
warning.
In
this
study,
evolution
flooding
a
high-density
area
was
analyzed
based
on
Mike
Flood
model,
influence
mechanisms
different
rainfall
peak
locations
infiltration
rate
scenarios
characteristics
waterlogging
were
explored.
results
revealed
that
under
same
return
period,
larger
coefficient,
value
inundation
volume
area.
When
coefficient
is
small,
higher
period
is,
lag
time
P
=
50a,
r
0.2,
delay
for
depths
H
>
0.03
m
0.15
reached
32
min
45
min,
respectively,
At
time,
there
are
also
differences
depths.
greater
depth,
longer
volume,
more
effect
prolongation.
It
worth
noting
increase
lead
advance
area,
overall
obvious
than
volume.
times
advanced
by
4
~
8
−
2
9
m,
after
rate;
smaller
time.
capacities
obtained
study
can
help
provide
new
perspective
warning
waterlogging.
