长江南京八卦洲河段演变分析及治理对策探讨  

Study on river regime evolution of Baguazhou Reach of Yangtze River and regulation countermeasures in Nanjing City

作　　者：侯卫国 胡春燕 谢作涛 

机构地区：[1]长江勘测规划设计研究院规划处,湖北武汉430010

出　　处：《人民长江》2011年第7期39-42,共4页Yangtze River

基　　金：十一五科技支撑项目"三峡工程水库泥沙淤积及其影响与对策研究"(2006BAB05B02)

摘　　要：通过收集长江南京八卦洲河段20世纪60年代以来的水文地形资料,分析了该河段近期演变特点及其河道演变趋势。目前,八卦洲左汊分流呈现缓慢减小态势,对左汊内重要企业码头的正常运行造成影响。针对八卦洲河段存在的问题及两岸经济发展的要求,对八卦洲河段治理对策进行了初步探讨,采用数学模型对洲头鱼嘴、左汊进口切滩、疏浚扩卡等几类方案进行了研究。研究结果表明:同时对汊道内上坝和皇厂河两处实施扩卡,可使左汊绝对分流比增加值最大。研究成果可为本河段下一步系统整治提供参考借鉴。Through collecting hydrologic and topographic data in Baguazhou Reach of Yangtze River in Nanjing since 1960s,we analyze the recent river regime evolution characteristics and its evolution trend.At present,the diversion ratio of left branch is reducing slowly,which is a threat to the regular operation of the important wharfs on the left branch.In view of the problems existing in Baguazhou Reach and economic development requirement of the regions on both banks,we discuss the countermeasures for regulating the river reach.The regulation schemes including fish mouth regulation,bend bypassing of the entrance of left branch and dredging and widening are studied using mathematical models.The results show that we should remove the barriers at Shangba and Huangchanghe inside the inlet at the same time,so as to obtain the maximum increase of absolute diversion ratio of the left branch.

关 键 词：河道演变 治理对策 数学模型 八卦洲河段 长江 

分 类 号：TV85[水利工程—水利水电工程]