Development of a Highly Accurate Numerical Simulation Model for River Water Inundation and Landside Water Inundation for Urban Area

城市地区河水和陆侧水淹没高精度数值模拟模型的开发

• 批准号: 17360237
• 负责人: AKIYAMA Juichiro
• 金额: $ 8.83万
• 依托单位: Kyushu Institute of Technology
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 2005
• 资助国家: 日本
• 起止时间: 2005 至 2007
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-17360237/
• 关键词: numerical simulation model; river water inundation; landside water inundation; FDS; SDM; GIS; slot model; flood mitigation; 洪水氾濫解析; 数値シミュレーション; 洪水防御計画; 浸水対策; 都市域; 洪水ハザードマップ; 非構造格子; ハザードマップ

To achieve the various objectives such as flood damage prediction, flood mitigation, river basin development, a highly accurate numerical simulation model, consisting of inundation flow model and sewerage system model, for river water inundation as well as landside water inundation for urban area has been developed. In the inundation flow model, a new solution technique is employed that both river flood flow and river water inundation are solved simultaneously by the highly accurate numerical model for 2D unsteady free surface flows (SA-FUF-2DF model), and such new features as a dry/wet boundary condition for inland topography, a digital surface model (DSM), use of aerial photographic, and geographic information system (GIS) are incorporated as well in order to estimate flood discharge and to reproduce the complex behavior of the inundation flows with high accuracy as well as to achieve the stable calculation and easy data management. In the sewerage system model, the dynamic network model, based on FDS scheme combined with the Preissmann slot, is newly developed to simulate free耀urface and/or pressurized flow flows in a closed conduit, and is testified against experimental data.The model is calibrated against the landside water inundation in Iiduka city (2003) in the Onga river basin, which occurred due to inundation of branches and power deficiency of drainage pump stations. It is also demonstrated from numerical simulations under hypothetical storm intensity pattern in the Onga river basin that the model is a useful tool for achieving the above stated various objectives.

To achieve the various objectives such as flood damage prediction, flood mitigation, river basin development, a highly accurate numerical simulation model, consisting of inundation flow model and sewerage system model, for river water inundation as well as landside water inundation for urban area has been developed. In the inundation flow model, a new solution technique is employed that both river flood flow and river water inundation are solved simultaneously by the highly accurate numerical model for 2D unsteady free surface flows (SA-FUF-2DF model), and such new features as a dry/wet boundary condition for inland topography, a digital surface model (DSM), use of aerial photographic, and geographic information system (GIS) are incorporated as well in order to estimate flood discharge and to reproduce the complex behavior of the inundation flows with high accuracy as well as to achieve the stable calculation and easy data management. In the sewerage system model, the dynamic network model, based on FDS scheme combined with the Preissmann slot, is newly developed to simulate free surge and/or pressurized flow flows in a closed conduit, and is tested against experimental data.The model is calibrated against the landside water inflow in Iiduka city (2003) in the Onga river basin, which occurred due to inundation of branches and power deficiency of drainage pump stations. It is also demonstrated from numerical simulations under hypothetical storm intensity pattern in the Onga river basin that the model is a useful tool for achieving the above stated various objectives.

项目成果

常流あるいは射流中に置かれた水没柱状物に働く流体力

作用在正常流或射流中的浸没柱上的流体力

• 发表时间: 2006
• 期刊: 水工学論文集 第50巻
• 作者: 秋山壽一郎;重枝未玲;石原仁
• 通讯作者: 石原仁

常流あるいは射流中に置かれた水没柱状物体に働く流体力

作用在法向流或投影流中的浸没柱状物体上的流体力

• 发表时间: 2006
• 期刊: 土木学科西部研究発表会講演概要集 平成17年度
• 作者: Juichiro AKIYAMA;Mirei SHIGE-EDA;秋山壽一郎;秋山 壽一郎;重枝 未玲;重枝 未玲
• 通讯作者: 重枝 未玲

ダイナミック氾濫解析モデルによる河川からの溢水・越水流量の予測

利用动态洪水分析模型预测河流溢流和溢流

• 发表时间: 2005
• 期刊: 河川技術論文集 第11巻
• 作者: 秋山壽一郎;重枝未玲
• 通讯作者: 重枝未玲

GISを用いた飯塚市街地での氾濫流挙動の検討

利用GIS研究饭冢市区洪水流态

• 发表时间: 2008
• 作者: 秋山壽一郎;重枝未玲;一丸正行;田邉武司
• 通讯作者: 田邉武司

MESH GENERATION FOR INUNDATION FLOW ANALYSIS USING GIS AND DYNAMIC FLOOD SIMULATION OF THE URBAN AREA IN THE ONGA RIVER BASIN

利用 GIS 进行洪水流量分析的网格生成和翁加河流域城市地区的动态洪水模拟

• 发表时间: 2008
• 期刊: Advances in River Engineering No. 14
• 作者: Juichiro AKIYAMA;Mirei SHIGE-EDA;Takeshi TANABE
• 通讯作者: Takeshi TANABE