The gustiness is a common motion form of debris flow,especially viscous debris flow.However,few researches have considered the gustiness into the impact characteristics of debris flow,which needs further research.In this study,the check dam was used as the load receptor to study the impact characteristics of gustiness debris flow.The results show that,under the same general flow depth,the dam stress considering the impact of gustiness debris flow is far less than that of disposable continuous debris flow.The impact force increases with the increase of the times of gustiness debris flow,and the impact torque increases linearly.Under the impact of gustiness debris flow,the displacement and stress of the dam vary in the same rule.The safety factors of anti-sliding and anti-overturning of the dam under the effect of gustiness debris flow are larger than those of disposable continuous debris flow,and the decrease rate of the safety factors increases with the increase of the times of gustiness debris flow.And under the condition of the same total flow depth,the increase of the debris flow depth can significantly decrease the stability of dam.The conclusions can provide reference for the design of blocking structures of gustiness and frequent debris flow.
展开▼
