通过试验和实地考察，证实了钢管透水型防沙坝具有拦截泥沙作用。同时，通过试验模型、实地调查也进行了缝隙坝对冲刷泥沙调节效果的研究。但混凝土缝隙坝对泥石流拦截作用尚未做过系统的调查研究。缝隙坝发挥拦截泥沙作用主要取决于坝堤回水是否导致泥石流前端不能到达坝址处 Through the test and field investigation, it was confirmed that the steel pipe permeable sand control dam has the function of intercepting sediment. At the same time, through the experimental model, the field investigation also conducted a research on the effect of the gap dam on the sediment regulation. However, the effect of concrete gap dam on debris flow interception has not been investigated systematically. The role played by the sluice dam to intercept sediment mainly depends on whether the dam backwater causes the front end of the debris flow to reach the dam site