小浪底枢纽明流洞水头高、流速大 ,存在空蚀的可能性。为了减免空蚀对建筑物的危害 ,根据类似工程的经验 ,结合小浪底工程明流洞的具体情况 ,采用了掺气减蚀措施。设计过程中对掺气坎的形式、布置、保护长度等进行了充分的论证 ,取得了很好的效果。 Xiaolangdi junction Mingliu head high, high velocity, the possibility of cavitation. In order to reduce the damage to the building due to cavitation erosion, based on the experience of similar projects, combined with the specific conditions of Minglou Cave at Xiaolangdi Project, the aeolian erosion reduction measures were adopted. In the process of design, the form, arrangement and length of aeration were fully demonstrated, and achieved good results.