伶仃洋茅洲河口滩槽演变水沙模拟及治导线优化  

Water and sediment simulation of shoal-trough evolution and regulation line optimization in Maozhou Estuary of Lingding Bay

作　　者：陆永军[1] 莫思平[1] 王志力[1] 季荣耀[1] 顾继一 LU Yongjun;MO Siping;WANG Zhili;JI Rongyao;GU Jiyi(State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering,Nanjing Hydraulic Research Institute,Nanjing 210029,China)

机构地区：[1]南京水利科学研究院水文水资源与水利工程科学国家重点实验室

出　　处：《水科学进展》2019年第6期770-780,共11页Advances in Water Science

基　　金：国家自然科学基金资助项目(51520105014);国家重点研发计划资助项目(2018YFC0407504)~~

摘　　要：为适应伶仃洋茅洲河口治理开发条件,以保证行洪顺畅为泄洪纳潮的首要原则,同时顺应水沙运动和河势发展规律,对河口进行治导线比选和优化。该河口治导线方案分单、双通道,两类通道不同扩宽率下设计有围填、围填加开挖2种方案,开展水动力泥沙数学模拟计算和物理模型试验。结果表明:河口治导线各方案对伶仃洋涨、落潮流速的影响范围主要集中在交椅湾及其附近海域;方案实施后,周边海区冲淤变化较小,未对河势造成不利影响;根据对水动力、河口泄洪、河势稳定影响的综合分析,单双通道相比较而言,对洪水位、纳潮量、高低潮位、流速、河床冲淤的影响规律具有较好的一致性,相同扩宽率下各方案的影响程度均在同量级。In order to adapt to the development conditions of Maozhou Estuary,Lingding Bay,and ensure smooth flood discharge as the primary principle,and to comply with the law of water and sediment movement and river regime development,the regulation line of estuary is selected and optimized.The regulation line scheme is divided into single and double channels.There are two schemes of enclosure filling and enclosure filling and excavation under different broadening rates of the two types of channels.Mathematical simulation and physical model experiment of hydrodynamic sediment are carried out.The results show that the effects of various schemes of estuary regulation line on the rising and falling currents of Lingding Bay are mainly concentrated in Jiaoyi Bay and its adjacent waters,and that after the implementation of the scheme,the erosion and deposition in the surrounding waters have little change and have no adverse impact on the river regime.With the increase of the widening rate,the influence of scheme on the flood discharge in the estuary decreases gradually.According to comprehensive analysis of the impact on hydrodynamics,estuary flood discharge and river regime stability,compared with single-channel and double-channel,the impact on flood level,tidal volume,high and low tide level,flow velocity and riverbed erosion and deposition has good consistency.Under the same broadening rate,the impact of each scheme is of the same magnitude.

关 键 词：滩槽演变 泄洪纳潮 治导线 水沙模拟 单双通道 伶仃洋 

分 类 号：U617.5[交通运输工程—船舶及航道工程]