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1 工程概况及试验任务天桥水电站位于山西省保德县和陕西省府谷县县城上游8km~2的黄河干流上,是一座中型河床径流式电站。枢纽由电站厂房、泄洪闸、混凝土重力坝、土坝等组成。电站安装4台机组,总装机容量为12.8万kW,年发电为4.87亿kW·h。枢纽由于防洪标准偏低,拟在其右岸新建3孔泄洪闸,以增加泄洪能力。新建泄洪闸按百年一遇洪水设计,千年一遇洪水校核。闸底板为曲线型实用堰,下游为了减少开挖量,降低收缩断面流速,
1 Project Overview and Test Tasks Tianqiao hydropower station is located in Baode County, Shanxi Province and Fugu County, Shaanxi Province, 8km ~ 2 upstream of the Yellow River, is a medium-sized riverbed runoff power station. Hub from the power plant, flood gates, concrete gravity dam, earth dam and other components. Four power plants are installed, with a total installed capacity of 128,000 kW and annual power generation of 487 million kW · h. Due to the low standard of flood control, a new 3-hole flood gate is to be built on the right bank of the hub to increase flood discharge capacity. Newly built flood gates are designed according to the once-in-a-hundred-year flood and the once-in-a-thousand-year flood check. Gate brake for the curved practical weir downstream to reduce the amount of excavation and reduce the cross-section flow rate,