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鉴于影响沙质海岸沿岸输沙量的水文气象因素具有明显的年际变化,因此,沿岸输沙量也可视为具有年际变化的随机变量。本文应用极值分布理论,研究了多年输沙总量(海岸工程建筑物在不同的使用期内可能拦沙总量)的计算方法问题,提出了推算建筑物使用年限内不同危险率的拦沙总量计算公式,以及最不利的拦沙总量计算公式,并以毛里塔尼亚的努瓦克肖特海岸的资料进行了实例计算。
In view of the significant interannual variation of hydrological and meteorological factors affecting the sediment transport along the coast of the littoral, the sediment discharge along the coast can also be regarded as a stochastic variable with interannual variability. In this paper, the extreme value distribution theory is used to study the calculation method of the total amount of sediment transported for many years (the total amount of sand-blocking in the coastal engineering buildings during different periods of use) Total formula and the most unfavorable formula for calculating the total amount of sand barbed sediment were calculated and calculated based on the data of Nouakchott coast in Mauritania.