三峡工程蓄水以来,沙市河段水沙过程发生明显变化,沿程水位特别是枯水位呈累积性下降趋势,引江济汉工程取水口位于沙市河段,沙市枯水位下降影响渠道引水条件,导致工程枯季取水需求难以保障。通过水文泥沙分析方法,分析了沙市站近50年水...三峡工程蓄水以来,沙市河段水沙过程发生明显变化,沿程水位特别是枯水位呈累积性下降趋势,引江济汉工程取水口位于沙市河段,沙市枯水位下降影响渠道引水条件,导致工程枯季取水需求难以保障。通过水文泥沙分析方法,分析了沙市站近50年水沙系列变化、同流量级下枯水位下降趋势,结合引江济汉工程自运行以来的引水调度情况,分析了沙市站枯水位下降对工程引水的影响及对策,可为工程运行管理单位进行工程运行、维护和改造提供技术支撑。Since the impoundment of the Three Gorges Reservoir (TGR), the water and sediment conditions of Shashi Reach have changed significantly, and the water levels, especially the low water levels have decreased obviously. The intake of the Yangtze River to Han River Project is located in the Shashi Reach, and the Shashi low water levels affect the project channel inlet flow condition, which makes the water intake demand barely guaranteed during the dry season. Hydrological analysis methods are adopted to analyze the changing rule of water and sediment processes and the decline trend of low water level in the Shashi Reach in the past 50 years. The influence and strategies of Shashi low water level decreasing on the Yangtze River to Han River Project are studied according to the channel diversion volume of the project, which can provide technical support for engineering operation, maintenance, and renovation for the project management.展开更多
文摘三峡工程蓄水以来,沙市河段水沙过程发生明显变化,沿程水位特别是枯水位呈累积性下降趋势,引江济汉工程取水口位于沙市河段,沙市枯水位下降影响渠道引水条件,导致工程枯季取水需求难以保障。通过水文泥沙分析方法,分析了沙市站近50年水沙系列变化、同流量级下枯水位下降趋势,结合引江济汉工程自运行以来的引水调度情况,分析了沙市站枯水位下降对工程引水的影响及对策,可为工程运行管理单位进行工程运行、维护和改造提供技术支撑。Since the impoundment of the Three Gorges Reservoir (TGR), the water and sediment conditions of Shashi Reach have changed significantly, and the water levels, especially the low water levels have decreased obviously. The intake of the Yangtze River to Han River Project is located in the Shashi Reach, and the Shashi low water levels affect the project channel inlet flow condition, which makes the water intake demand barely guaranteed during the dry season. Hydrological analysis methods are adopted to analyze the changing rule of water and sediment processes and the decline trend of low water level in the Shashi Reach in the past 50 years. The influence and strategies of Shashi low water level decreasing on the Yangtze River to Han River Project are studied according to the channel diversion volume of the project, which can provide technical support for engineering operation, maintenance, and renovation for the project management.
