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首页> 美国政府科技报告 >Chute Spillway for Big Sioux River, Sioux Falls, South Dakota, Hydraulic ModelInvestigation
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Chute Spillway for Big Sioux River, Sioux Falls, South Dakota, Hydraulic ModelInvestigation

机译：大苏族河滑道溢洪道，南达科他州苏福尔斯，水力模型调查

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The Big Sioux River flows through Sioux Falls, located in Minnehaha County, SouthDakota. A Reconnaissance Study completed in 1988 identified a Federal interest in upgrading the existing flood control project at Sioux Falls by raising the levees. A 1993 Feasibility Report by the Omaha District examined deepening the stilling basin, raising the stilling basin walls, and raising the levees. The design of the chute stilling basin was based on sound engineering procedures; however, the need for a model study was necessary to optimize chute and stilling basin features to obtain the most economical design. The model verified that modifications to the stilling basin walls were necessary. Information obtained from the model included: flow characteristics and stilling basin performance, chute wall heights to prevent overtopping, downstream levee heights to prevent overtopping, riprap requirements for protection downstream of the structure, and wave heights of existing flow for design of riprap protection of the levees. The model study was used to determine the type of modifications to the basin. Serious consideration to lowering the basin was made.

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