圩区河槽调蓄库容影响因素分析研究  

Analysis on Influencing Factors of Regulation and Storage Capacity of River Channel in Polder Areas

作　　者：吴春 倪鹏 丁兆晖 WU Chun;NI Peng;DING Zhao-hui(Shanghai Municipal Engineering Design Institute(Group)CO.,LTD.,Shanghai 200092,China)

机构地区：[1]上海市政工程设计研究总院(集团)有限公司,上海200092

出　　处：《水电能源科学》2023年第12期82-84,40,共4页Water Resources and Power

摘　　要：河槽调蓄库容是圩区排涝安全的重要组成部分,为分析圩区河槽实际有效调蓄库容的影响因素,采用非恒定流模型和水量平衡法对单一河道进行调蓄计算,对比计算结果表明,影响河槽调蓄库容的主要因素为起调水位对应水深、泵站外排流量、河道长度及断面形态等,对于过流量较大的骨干排涝通道,其实际有效调蓄库容为其达到泵站外排流量时对应水面线以上至最高水位水面线之间的库容。研究结果可为圩区排涝规划设计提供参考。The regulation and storage capacity of a river channel plays an important role in the safety of drainage in polder areas.In order to study the factors related to the actual effective regulation and storage capacity of a river channel in polder areas,this paper adopts the unsteady flow model and the water balance method to calculate the regulation and storage capacity of a single river channel.The calculation results of the two methods show that the main influencing factors of the regulation and storage capacity of a river channel are the water depth corresponding to the starting regulation level,the roughness of the river channel,the length of the river channel and the cross-section morphology,etc.For the backbone drainage channel with large discharge,the actual effective regulation and storage capacity is the storage capacity from above the water surface line corresponding to the designed discharge to the maximum water level.The research results have certain reference value for the planning and design of drainage in polder areas.

关 键 词：河槽调蓄 排涝计算 非恒定流 动库容 

分 类 号：TV135.9[水利工程—水力学及河流动力学]