河口、海湾断面与潮量关系的一致性及其应用  

Coherent Relationship between Cross-section Area and Tidal Prism of Estuary and Bay

作　　者：韩曾萃[1] 朱宝土[1] 唐子文[1] 

机构地区：[1]浙江省水利河口研究院,浙江杭州310020

出　　处：《浙江水利科技》2010年第5期1-5,共5页Zhejiang Hydrotechnics

摘　　要：已有文献对海湾的断面面积的研究仅考虑潮量一个因素,进一步把考虑了径流、落潮历时、落潮含沙量的河口河相关系应用于海湾,用浙江省的杭州湾、象山港、三门湾、乐清湾等区域25个断面进行验证,其结果十分吻合。对河口河相关系进行全微分后,可以用来预测人类活动(如海湾内建水库、支汊堵坝、围垦等)对海湾断面变化,预测与实测资料基本吻合。对该河相关系经一定演算,揭示了河口、海湾关系的一致性的原因是它们都是满足床沙起动流速在合理的范围内。In the most related literature, cross-sectlon area in bay is determined only by tidal prism, and it is deficient. Considering the effect of runoff, period of ebb tide and sediment concentration of ebb fide on the bay, this paper established a formula based on hydraulic geometry analysis to predict cms_~section area. The estabhshed formula was verified by field data of 25 cross-sections of Hangzhou Bay, Xiangshan Bay, Sanmen Bay and Yueqing Bay in Zhejiang province, and the results were in good agreement with data. After total differential calculation, the formula could be used to predict cross-section area variation caused by human activities （such as construction of reservoir, fork channel closure, reclamation, etc. ）, and its feasibility was supported by some fieM data. The study suggests that the relationship between cross-section area and tidal prism of estuary and bay is coherent because beth of them satisfy the threshold velocity of bed sediment in a reasonable range.

关 键 词：一致性 河口海湾 断面及潮量关系 

分 类 号：TV148.1[水利工程—水力学及河流动力学]