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People live in the plain beside rivers for it's
convenience anciently. However, as time goesby the
civilizasion which change from the agricultural style to the
industrial and commercial style progressed and germinated
high-dense cities.Because of it,the cataract peak is added and
the time of concent-ration is shortened therefor, the effect
of the drainage in a megalopolisreduced,the probabilities of
inundation in block-street increased and it makesloss and
inconvenient. For example, the Taipei city is often suffered by
inun-dation.The purpose of this paper is to build a block-street
network inundationmodel(BSNI-model).During the cataract,we can
view the phenomenon that the rainis storaged on streets and
becomes overflow as drainage and use the governmentequation in
open channel to solve the Mac Cormack scheme and get the
dischargeand depth of every section on the street to approximate
th real situation on the streets and blocks while the
cataractis came.We use the discharge continue, the equation of
energy head and accommodate the Character Mmethod to get
thesolution in the junctions. In this paper, we design several
different cases totest the simulated ability of the BSNI-model.
Compare and discuss the operationresult and we can see that
this model is good in simulation but it should be tested by the
real case advancedly to explore the practicability of this
model.
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