异形宽尾墩挑流消能断面模型试验研究

Study on Irregular-Shaped Flaring Gate Pier Flip Trajectory Bucket Dissipation Cross-Section Model Test

在中高水头、大流量和低弗劳得数等特性的工程中,下游消能防冲问题难以用常规传统单一的消能工来解决,近年来采用复合新型消能工已成为一种趋势。本文提及的工程正是采用异形宽尾墩与挑流联合消能来解决消能防冲问题的。本文以水工断面模型试验为基础,通过动床冲刷数据,对各异形宽尾墩的体型进行比较,提出了消能防冲最优的异形宽尾墩型式和具体尺寸,可为设计部门提供有力的依据。

Downstream energy dissipation erosion protection can not be easily solved by conventional and traditional single energy dissipator in the project with medium and high water head, large flow, low Froude and other features. The use of composite new energy dissipator has become a trend in recent years. The project mentioned in this article solves the energy dissipation erosion protection problem through adopting irregular-shaped flaring gate pier and deflecting combined energy dissipation. The paper is based on hydraulic cross-section model test. The shapes of all irregular-shaped flaring gate piers are compared through moving bed scouring data. Optimal irregular-shaped flaring gate pier forms and concrete sizes of energy dissipation erosion protection are proposed, thereby providing strong basis for design department.