土木学会論文集B1(水工学)
Online ISSN : 2185-467X
ISSN-L : 2185-467X
水工学論文集第57巻
豪雨時における神田川への大規模下水道幹線からの流入流量ハイドログラフの推算
沼田 麻未福岡 捷二入澤 昭芳
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2013 年 69 巻 4 号 p. I_799-I_804

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The Kanda River flows through densely urbanized area. Therefore, the Kanda River basin has large-scale sewerage systems and many flood-control reservoirs along the river. The inflow discharge hydrograph from sewerage into river influences flood hydrograph of the Kanda River, but its volume is unknown. So, estimating the inflow discharge hydrograph from sewerage into the Kanda River is important for river managements. We applied the two-dimensional analysis of flood flow using time series of observed surface profiles in Kanda River. As a result, the calculation method provides good results for evaluation of inflow discharge hydrograph from sewerage. It is found that the discharge ratio of main stream to sewerage discharge is 5:2 at the confluence of Jyuniso trunk line and 3:2 at the confluence of Momozonogawa trunk line.

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© 2013 公益社団法人 土木学会
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