發(fā)布時(shí)間：2018-06-07 17:39

  本文選題：人工礫石灘 + 形態(tài)演化�。� 參考：《海洋工程》2017年05期

【摘要】：在我國采用礫石海灘在某些強(qiáng)動(dòng)力區(qū)域進(jìn)行海灘養(yǎng)護(hù)是一種新的嘗試,具有很好的適用性。以廈門天泉灣人工礫石灘為研究對(duì)象,對(duì)2015年至2016年間10條海灘剖面開展了5次周期性監(jiān)測(cè),通過綜合分析,得出在人工礫石灘竣工完成后的一年時(shí)間內(nèi),灘肩外沿線、岸線及灘面底角的砂礫分界線大幅度后退,灘肩寬度變窄;灘肩外沿線明顯隆起,形成灘肩脊線;灘面坡度變大,且上游側(cè)海灘的灘面普遍比下游側(cè)海灘的灘面陡,一年后,岸灘整體變化趨于穩(wěn)定。針對(duì)礫石灘不斷向西南方向運(yùn)移的現(xiàn)狀,采用Leo C.van Rijn輸移率公式計(jì)算礫石灘年平均輸移率,并通過測(cè)量斷面法、體積變化量法對(duì)Leo C.van Rijn公式計(jì)算結(jié)果進(jìn)行驗(yàn)證,得出礫石灘年平均輸移率的范圍約為1 015.66~2 392.5 m~3/a。
[Abstract]:It is a new attempt to adopt gravel beach in some strong dynamic areas in our country, and it has good applicability. Taking the artificial gravel beach of Tianquan Bay in Xiamen as the research object, five periodic monitoring of 10 beach sections from 2015 to 2016 were carried out. Through comprehensive analysis, it was concluded that within one year after the completion of the artificial gravel beach, the beach along the shoulder of the beach was located. The gravelly boundary between the shoreline and the bottom corner of the shoreline recedes by a large margin, and the width of the beach shoulder becomes narrower; the beach along the shoulder rises obviously and forms the beach shoulder ridge line; the slope of the beach surface becomes larger, and the beach surface on the upstream side of the beach is generally steeper than that of the beach on the downstream side of the beach. One year later, The overall change of the shoreline tends to be stable. In view of the current situation of the gravel beach moving to the southwest, Leo C. van Rijn transport rate formula is used to calculate the annual average transport rate of gravel beach. The calculation results of Leo C. van Rijn formula are verified by measuring section method and volume variation method. It is concluded that the average annual transport rate of gravel beach is about 1 015.66 ~ 2 392.5 m ~ (3 / a) 路a ~ (-1) 路m ~ (-1) ~ (-1).
【作者單位】： 福州大學(xué)土木工程學(xué)院;國家海洋局海島研究中心;國家海洋局第三海洋研究所;
【基金】：國家海洋公益性行業(yè)科研專項(xiàng)資助項(xiàng)目(200905008,201405037) 國家自然科學(xué)基金青年科學(xué)基金項(xiàng)目(41406070)
【分類號(hào)】：P748

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