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近年来,西江河口地区咸潮入侵的问题越发严峻,严重威胁人民的日常生活,故对河口咸潮咸水物质输运转移变化机理研究尤为重要。采用水动力学方法进行河道盐度的扩散演算,构建河网水质的数学模拟模型。在建模的基础上,用其模拟西江河口水流、盐度输运变化规律,并与实测水文资料进行对比。结果说明,模拟计算曲线与实测曲线相对一致,该模型具有适用性。该模型可用来预报西江河口咸潮入侵的影响时间、影响范围,数值模拟咸潮上溯的环境影响,进而提出应对和控制咸潮上溯的对策措施,实现对未来咸潮入侵过程的模拟,为河口咸潮入侵的预报与防治工作提供丰富的资料和可靠的技术支持。
In recent years, the problem of saltwater intrusion in the estuary of Xijiang River becomes more and more serious, which seriously threatens the daily life of the people. Therefore, it is particularly important to study the mechanism of salt water salty water transport in the estuary. The hydrodynamic method is used to calculate the diffusion of the salinity of the river and construct the mathematical model of river network water quality. Based on the modeling, the variation of water flow and salinity transport in the Xijiang River Estuary was simulated and compared with the measured hydrological data. The results show that the simulated curve is relatively consistent with the measured curve, and the model has applicability. The model can be used to predict the influence time and influence range of saltwater intrusion in the Xijiang River estuary, and to simulate the environmental impact of salt water tracing upstream. Then, the countermeasures to cope with and control salt water tracing are put forward to simulate the saltwater intrusion process in the future. Salty water intrusion forecast and prevention work to provide a wealth of information and reliable technical support.