汴西湖引水对黑岗口水库的影响研究

Effect of Diversion in Bianxi Lake on Heigangkou Reservoir

为了研究汴西湖建成后黑岗口水库泥沙分布变化的相关问题,通过对汴西湖从黑岗口水库引水数据的分析,结合黑岗口-汴西湖地形数据,依据插值和拟合数学理论,利用Flow-3D软件进行建模计算得到黑岗口水库的水沙分布,计算结果表明修建汴西湖后引水闸位置处引水断面收缩,造成一定量的淤积。若不采取相应的措施,将会造成引水效率下降,从而使黑岗口水库和汴西湖的连接干渠倒虹吸丧失正常输水功能。同时,综合对比不同引水方案,得出了根据实际降水量的时间分布来调节输水量的优化方案。

In order to study the issues related to sediment distribution in the Heigangkou Reservoir before and after the construction of the Bianxi Lake, this paper analyzed the drainage data from the Heigangkou Reservoir of the Bianxi Lake and combined the terrain data of the Heigangkou-Bianxi Lake, based on interpolation and fitting mathematical theory. Using the Flow-3D software for modeling calculation, the distribution of water and sediment in the Heigangkou Reservoir was calculated. The calculation results show that the diversion section at the location of the diversion gate is shrinked after the construction of Bianxi Lake, causing a certain amount of siltation effect. If the corresponding measures were not implemented, the efficiency of water diversion would be reduced, and the inverted siphon of the main trunk of Heigangkou Reservoir and Bianxi Lake would lose its normal water transfer function. Meanwhile,the comparison of different water diversion schemes was combined to obtain an optimal solution for adjusting the water volume according to the time distribution of the actual precipitation.