MIKE耦合模型在内河航道水面线计算中的应用

Application of MIKE Coupled Modeling in Water Surface Profiles Calculation of Inland Waterway

【目的】在航道水面线计算过程中,常常会有水闸等水工建筑物对水产生不可忽略的阻碍作用。为研究含有水工建筑物的耦合模型在航道水面线计算中的适用性及准确性,以汝河为例,建立数学模型对河道典型工况进行研究。【方法】通过实测河道横断面,创新性地建立闸位处地形的一、二维河道耦合模型,并在模型率定后进行水面线计算分析。【结果】分析闸位处的流场分布情况可知,模拟结果能够体现水闸结构对过闸水流的阻碍作用,从而影响闸前闸后的水位变化。【结论】一、二维河道耦合模型结果率定和适用性较好,该方法的应用为含有水工建筑物的水面线计算提供了参考。

[Purposes]During the process of deducing water surface profiles in inland waterways,hydrau-lic structures such as sluices often significantly impede water flow.This study aims to investigate the ap-plicability and accuracy of one-and two-dimensional coupling models incorporating hydraulic structures in solving water surface profile calculations for inland waterways.Using the Ru River as a case study,mathematical models are established to examine typical channel conditions.[Methods]Measured cross-sections of the river and innovative terrain modeling at sluice locations are utilized to develop one-and two-dimensional coupling models of the river channel.After calibrating the models,water surface profile calculations are performed for analysis.[Findings]Analysis of the flow field distribution at sluice loca-tions indicates that the simulation results accurately reflect the obstructive effects of hydraulic structures on water flow through the sluices,thereby affecting water level changes upstream and downstream of the sluices.[Conclusions]The results of the one-and two-dimensional coupling models demonstrate satis-factory calibration and applicability.The application of this method provides reference for computing wa-ter surface profiles containing hydraulic structures.