南水北调东线分流区通航水流条件及改善措施

Water Conditions and Their Improving Measures for Navigation in Distributary Domain of Eastern Route of South-to-North Water Transfer Project

采用平面二维水流数学模型,对南水北调东线某工程调水分流区通航水流条件进行了计算分析,提出了改善通航水流条件的方案。计算结果表明,现状条件下分流区通航水流条件不能满足规范要求,方案2通过扩挖金宝河及分流区南侧对回流区和横向流速的改善效果较好,推荐其作为工程改善措施。

The water conditions for navigation in a distributary domain of the Eastern Route of South-to-North Water Transfer Project is computed and analyzed with a two dimensional mathematical model. Measures for improving the navigable water conditions are proposed. The computed results indicate that the water conditions in the distributary domain under the present situa- tion can not meet the requirements of the standards. Plan 2 may produce satisfactory improvement of the water conditions in the return flow zone and the transverse flow velocities by dredging the Jinbao River and the south of the distfibutary domain, which is recommended as the measure for improving the water conditions in the domain.