大唐火电厂新建取水工程河段泥沙特性研究

冷却水是保证火电厂正常运行的必要条件,取水防沙条件的好坏对电厂的安全运行至关重要。大唐火电厂取水河段处于昭化水电站回水区,属于弯曲型河道,泥沙特性复杂,为保证取水安全、可靠,采用物理模型试验与数值模拟相结合的方法对取水工程河段的泥沙特性进行研究,并预测了取水河段多年后的泥沙淤积情况。结果表明,大唐火电厂取水河段短期内无推移质淤积,多年后泥沙淤积较少,取水口位置选取较为合理。

Research of Sediment Characteristics of River Reach for Newly Built Water Intake Engineering of Datang Thermal Power Plant

Cooling water is a necessary condition to ensure normal operation of thermal power plant, and the sand prevent condition of cooling water is very significant to ensure the safety operation of power plant. Because the water intake of Datang thermal power plant is located in the backwater area of Zhaohua hydropower station and the reach is in river bend, sediment characteristics is complex. In order to ensure the safety of water intake engineering, this paper investigated the sediment characteristics of water intake reach and predicted the tendency of silting process by combining physical model with numerical simulation method. The results show that there is no bed load deposit in short period and it has little sediment deposition in a long time at the water intake. Therefore, the position of water intake is reasonable.