摘要
通过潮汐水流和悬沙淤积物理模型试验,研究厦门高集海堤开口改造工程潮流泥沙问题,研究表明,高集海堤开口后,东、西海域两股水流的汇流区和分流区在高集海堤附近,东海域涨潮流速有所增大,落潮流速有所减小,西海域则相反;随着开口宽度增大,流速变幅增大,开口大于800 m后流速变幅趋缓;海堤开口后净输水方向为自东海域向西海域,有利于厦门湾内水体与外海的交换;高集海堤开口对东渡港区泥沙淤积影响不大.综合分析认为高集海堤开口宽度800～1 000 m较为合适,开口800 m时大潮条件下1d的净输水量约0.91×108m3,东渡北港区港池年平均回淤强度增大0.18 m/a左右,航道淤强增大0.05 m/a左右.
This paper investigated current and sedimentation in uncork rebuilt of Gaoji Causeway through tidal and sediment model test.The results showed that the confluence region and bifurcation region of the two flows of Xiamen east sea area and west sea area were near Gaoji Causeway after its opening.In the east sea area,the flood current velocity increased,and the ebb current velocity decreased.It is the contrary in the west sea area.With the increase of the opening width,the velocity amplitude increased.When the opening width is greater than 800m,the velocity decreased.The direction of net water transport is from the east sea area to the west sea area,which facilitated the water exchange between Xiamen Bay and the open waters.The uncork rebuilt of Gaoji Causeway had no marked influence on the sedimentation in the Dongdu harbor base.Comprehensive analysis reveals that the reasonable opening width of Gaoji Causeways is 800~1 000 m.While the opening width is 800 m,the daily flow capacity of net water is about 0.91×108 m3;the back silting intensity of the Dongdu north harbor base increases about 0.18m/a;the channel siltation strength increases about 0.05 m/a.
出处
《台湾海峡》
CAS
CSCD
2012年第4期571-577,共7页
Journal of Oceanography In Taiwan Strait
关键词
物理海洋学
厦门湾
海堤开口
模型研究
潮流
泥沙
physical oceanography
Xiamen Bay
seawall open
physical model study
current
sediment
