南水北调东线梁济运河段输水流量损失的经验估算方法  

Empirical estimation of water conveyance flow loss in Liangji canal section of the South-to-North Water Transfer Eastern Route Project

作　　者：赵然杭[1] 储燕 瞿潇 王兴菊[1] 李典基 ZHAO Ranhang;CHU Yan;QU Xiao;WANG Xingju;LI Dianji(School of Civil Engineering,Shandong University,Jinan 250061,China;South-to-North Water Diversion Dongxian Shandong Main Line Co.,Jinan 253000,China)

机构地区：[1]山东大学土建与水利学院,济南250061 [2]南水北调东线山东干线有限责任公司,济南253000

出　　处：《南水北调与水利科技（中英文）》2023年第1期48-55,共8页South-to-North Water Transfers and Water Science & Technology

基　　金：山东省水利科研与技术推广项目(SDSLKY201807,SDSLKY201902);山东省利用亚行贷款项目。

摘　　要：传统Kostiakov经验公式计算结果为一定值,在未衬砌的沿程地质变化较大的河段应用时不能充分体现输水损失沿程变化的动态特点。为克服原公式局限性,采用积分学方法及广义简约梯度法对Kostiakov经验公式进行改进,形成改进Kostiakov经验公式法,并以南水北调东线梁济运河段为例,利用2013—2019年实测数据,对改进Kostiakov经验公式中的参数进行率定。考虑梁济运河段运行期间易受春灌影响,分别利用受春灌影响显著的2019—2020年和影响一般的2020—2021年实测数据对改进Kostiakov经验公式进行验证。结果表明:改进Kostiakov经验公式法可克服原公式应用时的局限性,有效提升输水损失计算精度,扩大原公式的应用范围;改进后计算结果与两个时段实测数据的平均相对误差分别由原来的27.26%和11.72%降低为7.9%和6.84%,对调水工程运行调度具有重要意义。The South-to-North Water Transfer Project is the world’s largest inter-basin water transfer project, and its main purpose is to alleviate the serious shortage of water resources in northern China. The main task is to reasonably determine the amount of water transfer, water transfer process and the scope of water transfer. Since its operation,the project has effectively alleviated the current situation of water shortage in northern China and promoted social and economic development. The accuracy of the water transfer efficiency affects the accuracy of the scheduling scheme, and the water transfer loss is an important index reflecting the water transfer efficiency. However, in the operation of the project, due to internal and external factors, there is a difference between the actual water transmission loss and the designed water transmission loss, so it is important to reasonably determine the water transmission loss to achieve accurate scheduling.The calculation accuracy of water conveyance loss has an important impact on the scheduling and configuration of water transfer projects. The traditional Kostiakov empirical formula is of certain value, which can not fully reflect the dynamic characteristics of the change of water transmission loss along the river when it is applied to the unlined river reaches with large geological changes. To overcome the limitations of the traditional Kostiakov empirical formula, it was improved with the integral method and the generalized reduced gradient method. The Liangji canal section of the eastern route of the South-to-North Water Transfer Project was taken as an example, and the field data from 2013 to 2019 were used to calibrate the parameters in the improved Kostiakov empirical formula. Considering that the Liangji canal section is susceptible to spring irrigation during the operation, the field data from 2019 to 2020and 2020 to 2021 were used, which was significantly affected by spring irrigation to verify the improved Kostiakov empirical formula. To overcome the limitati

关 键 词：南水北调东线 输水损失 Kostiakov经验公式 广义简约梯度法 积分学方法 

分 类 号：TV68[水利工程—水利水电工程]