摘要
采用平面二维水流泥沙数学模型计算分析了曹娥江大闸围堰施工期河道冲淤情况.在验证计算的基础上,对围堰工程附近河床冲淤和冲刷防护的预测分析表明,受过流断面缩窄的影响,围堰右侧的曹娥江河道断面将产生冲刷;围堰上下游侧水域靠近曹娥江左岸处的泥沙有所淤积;由围堰引起的泥沙冲淤量和冲淤范围变化不大,仅局限在桑盆殿以下的曹娥江河道.计算成果已为有关单位在设计施工中参考使用,为施工期围堰堤角的冲刷防护提供了科学依据,也为类似工程建设积累了经验.
This paper adopts a two-dimensional mathematicd model for river flow and sediment transport to calculate and analyze the river scour and siltation duning construction of the cofferdam of Cao＇e River Floodgate. On the basis of verification and calculation, the predictive analyses of the riverbed scour ＆ siltation and scour protection near the cofferdam show that, affected by the narrowing of the cross-section, the river channel section of the Cao＇e River on the right side of the cofferdam will suffer from scour; there will be sediment silting in the upstream and downstream waters of the cofferdam and along the left bank of the Cao＇e River; changes in sediment scour ＆ siltation quantity and scope caused by the cofferdam will be not great, and will be only found in the Cao＇e River channel below Sangpendian. The calculated results have been applied to design and construction. The study has provided scientific evidences for the scour protection of cofferdam banks and corners during construction, and experiences for similar project construction.
出处
《水利水运工程学报》
CSCD
北大核心
2008年第3期52-57,共6页
Hydro-Science and Engineering
关键词
围堰工程
水流冲刷
数值模拟
曹娥江大闸
cofferdam
flow scouring
numerical simulation
Cao＇e River Floodgate
