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1 计算研究的目的要求 新赵公桥位于卤汀河与新通扬运河交叉口附近,鉴于新通扬运河远期向卤汀河输水水量较大,引水时流态复杂,为保证航行安全并为赵公桥桥位选择提供科学依据,我们运用平面二维水深平均水流运动数学模型着重对引水、排涝各种工况兴建新赵公桥情况下河道流速流态进行计算。计算中考虑了新赵公桥桥柱在河道中的分布及影响,计算得到对应河道开挖规模近期、远景两个实施阶段引水和排涝时赵公桥附近的水流流
1 The objective of the calculation study is that the Xinzhao Bridge is located near the intersection of the Huguang River and the Xintongyang Canal. In view of the large amount of water transited to the Halighting River in the future, the flow pattern is complicated at the time of diversion, in order to ensure the safety of navigation and Zhao Bridge provide a scientific basis for the choice of bridge position, we use the plane two-dimensional average depth of the water flow mathematical model focuses on the diversion of water and drainage conditions of the construction of the new Zhao Bridge under the river flow velocity calculation. In the calculation, the distribution and influence of the Xinzhao Bridge Bridge in the river channel are considered, and the water flow near the Zhao Bridge in the two phases of water diversion and drainage at the two phases of the corresponding river excavation is calculated.