海州湾滩涂围垦对临洪河口闸下河道淤积的影响  

Impact of Haizhou bay tidal flat reclamation on siltation in the river downstream sluice in Linhong estuary

作　　者：杨第昌[1,2] 陶建峰[1,2] 张长宽[2] 

机构地区：[1]河海大学水文水资源与水利工程科学国家重点实验室,江苏南京210098 [2]河海大学港口海岸与近海工程学院,江苏南京210098

出　　处：《水运工程》2014年第6期96-101,共6页Port & Waterway Engineering

基　　金：国家自然科学基金(51179067)

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。With the development of coastal economy, reclamation has become the main way to deal with the scarcity of land resources. The area of Haizhou bay tidal flat reclamation is large, and it＇s close to Linhong estuary. So it may cause siltation in the river upstream, thereby affecting the region＇s flood control and drainage. The tidal current field in Haizhou bay and adjacent seas is simulated by MIKE21, and the hydrodynamic changes, before and after the reclamation in the fiver are analyzed emphatically. Compared to the past, the average velocity of flood tide and ebb tide in the regions near reclamation area decreases, but the hydrodynamics in the fiver just change a little. The average ebb tide discharge of the feature sections along the fiver decreases after reclamation, but the magnitude of reduction is not large. The silting thickness in the fiver caused by reclamation is estimated to be about 2 cm by the analytical mode, which is based on river facies relation of Dou Guoren. It indicates that the reclamation does not have a great impact on siltation in the fiver downstream of the sluice.

关 键 词：海州湾 滩涂围垦 河道淤积 分析模式 

分 类 号：U611[交通运输工程—船舶及航道工程]