水口电站对闽江河口咸潮入侵的影响

河流上大型电站的建设，在一定程度上会改变下游河道的径流特征，径流、潮流强度组合的变化，将影响咸潮的入侵，文章从水口电站前后闽江下游径流量变化入手，分析了水口电站对闽江河口咸潮入侵的影响。结果表明：（１）水口电站具有一定的季调节能力，有利于增大闽江河口咸潮入侵；（２）电站调峰不会加剧咸潮入侵的不利影响；（３）若电站关闸蓄水，则会加剧河口咸潮入侵。最后，提出了防止和减轻咸潮影响的对策措施。

Effect of Shuikou Hydropower Station on Salt-water Intrusion into the Min River Estuary

To a certain degree, runoff characteristics of natural course of lower reaches of river will be changed due to the construction of a large upstream power plant, and salt-water will be affected by the changes of runoff-tide strength ratio. In this paper, effect of Shuikou hydropower station on salt-water intrusion into the Min River estuary was analyzed based on the changes of downstream runoff of Min River before and after the construction of Shuikou hydropower station. Finally, the authors presented the countermeasure to prevent and mitigate the effect of salt-water.