本文通过试验室和现场试验阐明了在大坝溢洪道上设置自溃堰保证主坝安全的现实可能性。根据资料和推移力理论,应用模型试验成果以相似关系推导出冲刷率。 In this paper, laboratory and field tests are conducted to illustrate the practical possibility of setting up a self-collapsing weir on the dam spillway to ensure the safety of the main dam. According to the data and push force theory, the model test results are used to deduce the flushing rate in a similar way.