Method for determining accumulative effect scope of dual-bridge damming

The invention provides a method for determining an accumulative effect scope of dual-bridge damming. The method comprises the steps including establishment of a model, influential factor and non-dimension analysis, water level difference curves of one single bridge, damming features of one single bridge, determination of dual-bridge accumulative damping features and the maximum effect scope, etc. The method provided by the invention is used to determine a critical distance which can avoid mutual effects of bridge damming between the two adjacent bridges, namely the maximum scope of dual-bridge damming accumulative effects. With regard to eight bridges on the Bengbu Reach of Huaihe River, the maximum bridge interval with accumulative effects is about 215 times the pier width. According to the invention, scientific supporting can be provided for rational planning and layout as well as safe construction and running of river-related bridges. 本发明提供种确定双桥梁壅水累积影响范围的方法，包括建立模型、影响因素及无量纲分析、单桥梁的水位差曲线、单桥梁的壅水特性、确定双桥梁累积壅水特性及