非恒定流对长江叙渝段航道整治建筑物坝面维修的影响
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摘要
叙渝段航道整治建筑物坝面维修受上游金沙江、岷江枢纽电站的非恒定流影响明显。基于近年李庄、朱沱两站逐时水位资料,分析了两站水位变化特征。根据低水位集中、日变幅最小的原则提出了宜宾—合江、合江—重庆河段航道整治建筑物坝面维修的最佳施工时间,为保证坝面的质量,可适当减小坝面厚度或采取分段施工的方法。
The regulation structure's surface maintenance in Yibin to Chongqing section of the Yangtze river is affected by unsteady flow caused by hydropower stations in the Jinsha River and Minjiang River. Based on the hourly water level data of Lizhuang station and Zhutuo station in recent years, we analyze the characteristics of the water level change of two stations. The best time of regulation structure surface maintenance in Yibin to Hejiang section and Hejiang to Chongqing section of the Yangtze River is put forward.In order to ensure the quality of structure surface, the thickness of regulation structure surface could be decreased,or section construction could be adopted.
The regulation structure's surface maintenance in Yibin to Chongqing section of the Yangtze river is affected by unsteady flow caused by hydropower stations in the Jinsha River and Minjiang River. Based on the hourly water level data of Lizhuang station and Zhutuo station in recent years, we analyze the characteristics of the water level change of two stations. The best time of regulation structure surface maintenance in Yibin to Hejiang section and Hejiang to Chongqing section of the Yangtze River is put forward.In order to ensure the quality of structure surface, the thickness of regulation structure surface could be decreased,or section construction could be adopted.
引文
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[5]薛飞龙,胡江,杜思材,等.叙泸段河道非恒定流作用下水力参数的变化[J].水运工程,2017(10):142-148.
[2]张文江,曾涛,马李伟.川江航道整治建筑物损毁原因及维修对策研究[J].人民长江,2012,43(9):85-88.
[3]李洪奇.山区河流航道整治建筑物损毁原因与机理分析[J].科技风,2015(10):181-182.
[4]杜思材,胡江,薛飞龙,等.金沙江宜宾段非恒定流过程及传播特性[J].水运工程,2017(10):166-170.
[5]薛飞龙,胡江,杜思材,等.叙泸段河道非恒定流作用下水力参数的变化[J].水运工程,2017(10):142-148.