Stable Channel Analytical Design Method

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by Ronald R. Copeland, US Army Engineer Waterways, Experiment Station, Vicksburg, United States,

Document Type: Proceeding Paper

Part of: Hydraulic Engineering:

Abstract: The Flood-Control Channels Research Program is being conducted at the US Army Engineer Waterways Experiment Station to develop systematic methods for design of stable channels for small streams. These systematic methods are needed in the planning and preliminary design stages of local flood-control projects with time and cost constraints. In the detailed design phase of flood-control projects, more comprehensive techniques, including numerical and physical modeling, are currently used. However, these methods are often too time-consuming for analyzing the feasibility of several alternative designs or for evaluating the feasibility of a channelization project in general. An analytical approach is being developed that determines dependent design variables of width, slope, and depth from the independent variables of discharge, sediment inflow, and bed material composition. It involves the solution of flow resistance and sediment transport equations, leaving one dependent variable optional. Minimum stream power is used as a third equation for an optional fixed solution.

Subject Headings: Hydraulic design | Flow resistance | Channel stabilization | Floods | Stream channels | Stable channels | Load and resistance factor design | Sediment transport |

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