水电能源科学

为解决宽浅河道断面复杂工况下的流量实时在线监测问题，基于常规在线测流设备适用性，提出双探头H-ADCP相向组合式应用，以南水北调东线取水源头高港水利枢纽为例，从河道断面数值模拟、流场分析、设备安装、比测设置等方面全过程开展应用研究。结果表明，测流河段在控制枢纽闸泵不同调度工况下流场复杂变化，双探头H-ADCP可安装在同一断面同一高度，超声波束相向交叉不会影响有效单元流速数据采集，可建立双指标流速与断面平均流速的关系推算实时流量，组合式应用测流流量精度高于单个H-ADCP测流数据精度，研究成果形成一套宽浅河道复杂工况下实时流量监测应用方法，可为在线测流设备组合性使用提供思路。

In order to solve the real-time online flow monitoring under complex conditions of wide and shallow river sections, based on the applicability of conventional online flow measuring equipment, the combined application of two-way probe H-ADCP facing each other was proposed. Taking the Gaogang Water Conservancy Project at the source of water intake of the East Route of the South-to-North Water Transfer Project as an example, the whole process of numerical simulation of river sections, flow field analysis, equipment installation, comparison measurement setting and other aspects were carried out applied research. The results show that the change of flow field in the flow measuring reach is complicated under different operation conditions of the control hub gate pump. The dual probe H-ADCP can be installed at the same section and the same height, and the ultrasonic beam crossing will not affect the collection of effective unit velocity data. The relationship between the double index velocity and the average velocity of the section can be established to calculate the real-time flow, and the accuracy of the combined applied flow measurement is higher than that of the single H-ADCP flow measurement data. The research results form a set of real-time flow monitoring application methods under complex conditions of wide and shallow rivers, which can provide ideas for the combined use of online flow measuring equipment.