丰满水电站重建工程大坝施工导流设计

丰满水电站重建工程为在原大坝下游120 m处新建一座大坝,在施工导流设计上充分利用了原有建筑物,将老坝作为新建工程施工的上游围堰,左岸三期厂房机组作为导流泄水通道之一,同时利用原有水库的调蓄能力汛期按汛限水位正常运行,并考虑洪水预报成果,进行库水位调蓄控制。在综合考虑上述因素的基础上,结合施工导流的特点,对导流方案、导流标准进行了比选,并对导流建筑物进行了设计。

Design of construction water diversion for dam of Fengman Hydropower Station Reconstruction Project

Fengman Hydropower Station Reconstruction Project is that newly builds a dam located 120m downstream of the original one，for which the original structures are fully utilized in the design of the construction water diversion，i.e. taking the original dam as the upstream cofferdam for the construction of the new project and the hydropower unit in the powerhouse of the phase III hydropower station as one of the discharge passages，meanwhile，the reservoir normally operates with the flood control level during flood season with the regulation and storage capacity of the original reservoir，and thus the reservoir is regulated and controlled under the consideration of the relevant flood forecasting result. On the basis of the comprehensive consideration of all the factors mentioned above，the water diversion scheme and criteria are comparatively selected，while the diversion structures are designed as well.