海州湾滩涂围垦对临洪河口闸下河道淤积的影响

发布时间：2018-06-05 04:07

本文选题：海州湾 + 滩涂围垦　；参考：《水运工程》2014年06期

【摘要】：随着沿海经济的发展,围垦已成为解决土地资源稀缺问题的主要方法。海州湾滩涂围垦面积较大,且距离临洪河口较近,有可能造成其上游河道的淤积,进而影响该地区的防洪排涝。应用MIKE21模型对海州湾及邻近海域的潮流场进行模拟,分析围垦前后河道内水动力条件的变化。相较于围垦前,围垦邻近区域的涨落潮平均流速基本均有所减小,而河道内的水动力条件变化则很小,沿程各断面的落潮平均流量均有所减少,但减少的量值不大。采用根据窦国仁河相关系推导出的分析模式,预估围垦引起的河道淤积厚度为2 cm左右,说明海州湾滩涂围垦不会对临洪河口闸下河道的淤积产生大的影响。
[Abstract]:With the development of coastal economy, reclamation has become the main method to solve the scarcity of land resources. The reclamation area of the tidal flat in Haizhou Bay is large and close to the flood estuary, which may result in the deposition of the upper reaches of the estuary and thus affect the flood control and drainage in this area. The MIKE21 model is used to simulate the tidal current field in Haizhou Bay and adjacent sea areas, and the changes of hydrodynamic conditions in the channel before and after reclamation are analyzed. Compared with those before reclamation, the average flow velocity of ebb and fall tide in the adjacent area of reclamation decreased basically, but the variation of hydrodynamic conditions in the channel was very small, and the average flow rate of falling tide along each section along the channel was decreased, but the value of the decrease was not significant. Based on the analysis model derived from the Dou Guoren river facies relationship, the silt thickness of the channel caused by reclamation is estimated to be about 2 cm, which indicates that the reclamation on the beach flat in Haizhou Bay will not have a great effect on the deposition of the river channel under the floodgate.
【作者单位】：河海大学水文水资源与水利工程科学国家重点实验室;河海大学港口海岸与近海工程学院;
【基金】：国家自然科学基金(51179067)
【分类号】：U612.23

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