秦山核电站邻近水域的流况分析

本文分析了秦山核电站邻近水域各测站的实测流、潮流和佘流分布及季节变化。结果表明:测区内潮流为非正规丰日浅海潮流,其运动形式呈往复流。核电站二期工程取水口附近(L_1,18站)为一大流速区,而一期工程出水口周围(L_2,L_2′站)有一相对小的流速区。大流速区落潮流历时大于涨潮流历时,而相对小流速区则相反;大流速区的余流较小,而小流速区的余流大。在四个季节中,涨潮流速秋季最大,春季次之,夏季最小;落潮流速秋季最大,夏季次之,春季最小。余流冬、秋两季较大。在实测流中以潮流为主,径流和季风的作用也相当显著。

The Analysis of the Flow State in the Water Area Adjacent to Qinshan Nuclear Power Station

In this paper, the distribution and seasonal variation are analyzed of the flow measured, tidal current and residual current in the water area adjacent to the Qinshan Nuclear Power Station.The results show that the type of the tidal current is irregular diurnal one of the shallow water, and the current elliptical path is a simple to-and-fro mosion. There is a higher current- speed area around the L1and 18 stations, and a lower current-speed area around the L2 and L2' stations. In the higher current-speed area, the period of falling tide is longer than that of rising tide and the speed of the residual current is lower: conversely, in the lower current-speed area, the period of falling tide is shorter than that of the rising tide and the speed of the residual current is higher. In the four seasons of the year, for the rising tidal current: the speed in autumn is the highest; the second in spring, and the smallest in summer. In the other hand, the speed in fall is the highest, the second in summer, and the smallest in spring for the falling tidal current. And the residual current speed is higher in both winter and autumn. For the flow measured, the tidal current occupies the major portion and the effect of the stream current and seasonal winds is also obvious.