深水航道工程对长江口流场的影响

该文建立了一个长江口二维流场数值模型,分别对深水航道工程实施前后长江口流场进行计算,计算结果显示深水航道工程对长江口影响区域主要集中在北槽及工程施工地点附近,而对距离较远的测站影响小。通过对各测站水位、流速和断面潮量变化的分析,表明工程对长江口水位的影响较小而对流速和南北槽进口断面潮量的影响较大。

Impact of the improvement project of Deep-Water Channel on flow field of the Yangtze Estuary

A two-dimensional numerical model was created to simulate the flow field at the Yangtze estuary. Through the verification of real-surveyed water level and current velocity data in March and September of 2002, it was found that the result from the numerical model fits the real-surveyed data. The numerical model was used to calculate the flow field of the Yangtze estuary before and after the project construction. Results show that the project only makes larger effect on part of Yangtze estuary flow field. Comparing and analyzing the changes of water level and velocity at different observation posts, it shows that the project has bigger impact on current velocity than on water level. The influence of the project focuses on the water area such as the northern channel and the construction site. However, the impact has less on the flow field at the upper stream of Yangtze estuary and further area.