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。
For high arch DAMS in valleys with the characteristics of high water head, large discharge and large power, the problems of energy dissipation and scour prevention are serious.
高拱坝泄洪消能的特点是坝高落差大，流量大，功率大，位于河谷狭窄地区，泄洪消能与防冲问题突出。
Hydraulics in water releasing structures with high water head and large discharge capability has been paid close attention recently.
高水头、大泄量的泄水建筑物水力学问题是水利工程建设中特别受关注的问题之一。
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