多孔拦河闸的水力特性研究

为了研究拦河闸的水力特性,针对某拦污工程,通过1∶70整体水工模型试验,对各工况下拦河闸的流态、流速、流量和冲刷等水力学参数进行对比分析,得出流量系数、冲坑范围和深度及上游水位壅水高度,对多孔拦河闸的泄洪能力、消能防冲和上游淹没进行验证,进而对原方案运行方式、电站船闸处导墙长度进行优化设计并提出合理的建议。优化结果表明:拦河闸进水平顺,水面光滑衔接,流速分布合理,流量满足要求;下游流态良好,冲坑深度和冲坑下游坡度满足要求;上游淹没范围满足要求。该研究可对类似工程理论分析及设计提供参考价值。

Hydraulic Characteristics of Porous Sluice

This paper studied the hydraulic characteristics for a certain sluice by a 1:70 overall hydraulic model test in which the sluice flow ,flow velocity ,flow and erosion characteristics are compared and analyzed ,it also derived the flow coefficient ,scour range and depth and upstream water level rising height size .We include the validation of the porous sluice discharge capacity ,energy dissipation and erosion control and upstream flood scope .According to the results of the experiment ,it was carried out on the original design scheme optimization design ,and reasonable suggestions were pro-posed .Results show that the river sluice inlet flow pattern is good and the water flow is smooth ,the velocity distribution is reasonable and the flow meets the requirement ;the downstream flow pattern is good ,the depth of the scour pit and the back slope also meet the requirements ;the upstream flood scope meets the requirement .The research can provide refer-ence for similar engineering .