强潮河口桩式丁坝减冲促淤效果研究  

Study of erosion-lessening and siltation-promotion effect for sheet-pile groins under strong tidal estuary

作　　者：赵渭军[1] 严盛 宣伟丽 贺春雷 林炳尧[1] 

机构地区：[1]浙江省水利河口研究院,浙江杭州310020 [2]浙江省钱塘江管理局,浙江杭州310016

出　　处：《水动力学研究与进展（A辑）》2006年第3期324-330,共7页Chinese Journal of Hydrodynamics

摘　　要：钱塘江涌潮气势雄伟,世界闻名,但对海塘具有很大的破坏力。该文提出了一种新颖的丁坝型式———桩式丁坝,从现场观测资料对比、实体模型试验和机理分析三个方面,分析桩式丁坝的减冲促淤效果,探究丁坝护滩保塘的机理。与堆石丁坝比较,桩式丁坝具有设计合理、施工简易、坝体内无内压力、有效地减轻了局部冲刷、便于维护检修等一系列优点。桩式丁坝可广泛应用于各类河道整治、海塘保护等工程中。Strong tidal estuany of Qiantang estuary is well-known in the world, but it has great destroy power on sea dyke. In the paper a new type of groin is introduced. Based on the site observations, physical model experiment and mechanism analysis, the effect of eroslon-lessening and siltation-promoting of sheet-pile groins is analysed. From hydraulic characteristics of tidal flow over groins, the mechanism of flat-maintenance and dyke-protection of sheet-pile groins is discussed. Contrast to traditional riprap groins, sheet-pile groins is characterised by reasonable design, simple construction, convenient for maintenace and service, no inner pressure in the groin body and so on. Sheet-pile groins may be extensively applied to various river training and sea-dyke protection.

关 键 词：强潮河口 桩式丁坝 减冲促淤 现场观测 局部冲刷 

分 类 号：TV133[水利工程—水力学及河流动力学]