论文部分内容阅读
针对枕头坝水电站泄洪闸的泄流能力问题,采用理论计算和模型试验对比的方法,分析了影响泄洪闸泄流能力的因素及泄流能力试验值与设计值之间存在较大偏差的原因,并对流量系数进行了参数反演计算。结果表明,泄洪闸的布置形式、上游导流墙的存在和流态的稳定性等因素均对泄洪闸的过流能力有一定影响,尤其当泄洪闸过流流态为孔流时不利影响较明显。
According to the problem of discharge capacity of flood discharge sluice gates of Pinyabashi Hydropower Station, the factors which affect the discharge capacity of discharge sluice and the reasons of large deviations between test value and design value of discharge capacity are analyzed by theoretical calculation and model test. The parameters of flow coefficient were calculated and calculated. The results show that the layout of the floodgate, the presence of the upstream diversion wall and the stability of the flow regime all have an impact on the over-flow capacity of the flood discharge sluice, especially when the over-flow regime of the flood sluice is adversely affected by the orifice flow obvious.