海南岛西南岸沿岸输沙特性及防波堤影响  

Characteristics of longshore sediment transport and effects of breakwaters in southwest coast of Hainan Island

作　　者：童朝锋[1] 王波[1] 鲁盛[1] 孟艳秋[1] 

机构地区：[1]河海大学港口海岸与近海工程学院,江苏南京210098

出　　处：《水利水运工程学报》2016年第1期9-16,共8页Hydro-Science and Engineering

基　　金：国家自然科学基金重点项目(51339005);国家自然科学基金青年项目(51409094)

摘　　要：通过海南岛西南岸东方海洋观测站波浪观测资料验证,建立八所海域波浪数学模型,计算确定八所新港沿岸水域各向破波要素。采用3种沿岸输沙率计算公式,确定海南岛西南岸八所新港周边海岸沿岸输沙率。分别探讨风浪、涌浪对海南岛八所新港沿岸输沙率的贡献,对比分析防波堤工程建设前后八所新港及附近沿岸输沙率特征。研究表明,海南岛西南岸向北的沿岸输沙能力大于向南的;风浪、涌浪对八所新港附近海岸沿岸输沙能力的贡献率与其出现的频率略有区别;八所新港建港后南北两侧出现淤积且南侧淤积强度大于北侧;防波堤长度的增加对沿岸输沙能力影响的范围和强度有所增大。According to the measured wave data of Dongfang Ocean Gauge Station in the southwest coast of Hainan Island, wave models were set up and calibrated. The models were utilized to simulate the wave field and get the breaking wave parameters along the coast of the Basuo new port. Based on those parameters, the longshore sediment transport rates at different cross sections along the coast were calculated with three different formulas including Seaport Hydrology Criterion formula, CERC formula, and Sun formula. The longshore sediment transport rates along the coast of the Basuo new port were analyzed and compared before and after the construction of the breakwaters. The respective contributions of the wind wave and the swell wave were also analyzed in this study. The analysis results show that the ability of the longshore transport sediment to the north is greater than that to the south ; and the longshore sediment transport rates contributed by the wind wave and the swell wave are close to their occurrence rates respectively. The deposition intensity along the south side of the Basuo new port is higher than that along the north side. The domains and effects of the longshore sediment transport rates caused by the breakwaters increase with the increase of the length of the breakwaters.

关 键 词：波浪模型 沿岸输沙率 防波堤 海南岛西南岸 八所新港 

分 类 号：TV148[水利工程—水力学及河流动力学]