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通过物理模型试验 ,研究了黄茅海内不同治导线对潮汐要素的影响 ,得出治导线对河口湾内的潮位变化随着上游径流量的增加而逐渐减弱的结论。中水大潮时 ,湾顶与湾腰处高潮位降低 ,低潮位抬高 ,其幅度与治导线进占的海域面积成正比。洪水大潮时 ,高潮位一般也降低。低潮位则有时降低 ,有时有所抬高。河口湾治导线实施后 ,涨潮最大流速、平均流速和落潮平均流速均有所减小 ,但落潮最大流速不减反增。涨、落潮潮量有不同程度的减少 ,其减幅与治导线的进占规模成正比。各站的高、低潮位发生时间都有前移趋势 ,治导线越往外推 ,潮时前移量就越大。本文对这些现象的成因进行了分析 ,并就潮位、潮流速及潮流量的变化对防洪水位和交通航运水深的影响作了阐述。
Through the physical model test, the influence of different guide lines on the tide elements in Huangmaohai Sea was studied, and the conclusion that the trend line of the guide lines to the estuary bay gradually weakened with the increase of the upstream runoff was obtained. During the tide of the water, the peak at the bay top and the waist of the bay are lower and the tide of the low tide is raised, which is directly proportional to the area of the sea occupied by the guide wire. When the flood tide, the climax is generally lower. Low tide is sometimes reduced, sometimes elevated. After the implementation of the estuarine and marine routes, the maximum flow rate, the average flow rate and the average eddy flow rate of the tidal flats both decreased, but the maximum flow rate of the ebb tidal stream increased non-decreasingly. The rise and ebb tide levels have decreased to varying degrees, and the decrease is directly proportional to the size of the occupation guideline. Each station’s high and low tide bit have a forward trend of the time, the governing wire more extrapolation, tide when the amount of the forward shift. In this paper, the causes of these phenomena are analyzed, and the influence of tide level, tide velocity and tide flow on the flood control water level and the depth of traffic navigation are expounded.