There are two methods namely flood discharge tunnel and spillway selected and compared for flood discharge structure of the Hengquan Reservoir Project.
洪家渡水电站泄洪隧洞的设计优化，经多种设计方案的比较论证，优选出适宜于该洞自然条件和运行要求的方案三。
As the high head, high velocity and large flow of flood discharge, the concrete of spillway tunnel in Xiaowan Hydropower Station is easy to be damaged by cavitation.
小湾水电站泄洪洞在泄洪时具有高水头、高流速、泄量大的特点，对混凝土冲刷力强，容易产生空蚀破坏。
It is showed that the appropriate design for inlet elevation, diameter and planar situation of a flood discharge tunnel is the key to the sedimentation engineering design for a reservoir.
实践经验表明，水库工程泥沙设计的关键在于合理确定泄洪排沙洞的进口高程、洞径及其平面位置。
Owing to the reaction of flood discharge surge, the water oscillation at the exit of straight tunnel is larger than curved tunnel.
对电站尾水洞比较了直尾水洞和弯尾水洞两种布置形式。
Owing to the reaction of flood discharge surge, the water oscillation at the exit of straight tunnel is larger than curved tunnel.
对电站尾水洞比较了直尾水洞和弯尾水洞两种布置形式。
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