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本文以葛洲坝电厂原型观测为基础,在对坝前流态做整体分析的基础上,说明坝前流态对拦污栅污物聚集及对拦污栅水头损失的影响。对葛洲坝电站21台机组进行原型观测后分析得出:各机组拦污栅前后水位及进水口流态各不相同,因此造成拦污栅前后压差的原因也是不同的,不能一概而论,要具体问题具体分析。同时提出在以后的工程设计中要考虑坝前流态对电站拦污栅污物排漂的影响及防治。
Based on the prototype observation of Gezhouba Power Plant and based on the overall analysis of the fluid flow before the dam, this paper shows the influence of the fluid flow before the dam on the accumulation of pollutants in the trash rack and on the head loss of the trash rack. After the prototype observation of 21 units of Gezhouba Power Plant, it is concluded that the water level around the trash rack of each unit is different from that of the water inlet. Therefore, the causes of the pressure drop before and after the trash rack are also different and can not be generalized. Specific analysis. At the same time, it is proposed to consider the influence of the fluid flow in front of the dam on the sewage draining of trash rack in the future and its prevention and treatment in the future engineering design.