运用数学模型结论验证大清河倒虹吸布置

Verification of inverted siphon layout with mathematical model result in Daqinghe river

大清河为南水北调工程天津干线上流域面积最大的交叉河流。大清河倒虹吸位于河北省容城县、津保高速公路白沟连接线下游70m处。为确保工程安全,在地形测量、钻取河床质、搜集水文站实测资料等基础上,进行二维水沙数学模型的动床计算,预报河床变化趋势和规律,验证现状倒虹吸布置。

The Daqinghe river is a cross river with the largest basin area on the main line of Tianjin section of the South-to-North Water Diversion Project. The Daqinghe inverted siphon is located at downstream 70 m of Baigou connecting line of Baoding-Tianjin highway in Rongcheng county of Hebei province. In order to ensure the project safety, the movable riverbed calculation of the two-dimensional flow and sediment mathematical model is performed based on the topographic survey, the bed material drilling and the measured data collecting of hydrology station, which would forecast the trend and the law of river bed change and validate the present layout of the inverted siphon.