That shows the branch river deposition is affected by the main river deposition. In flood season, mud flow come upward in branch river and make sedimentation.

分析表明，支流淤积完全受干流淤积形态的影响，汛期干流来沙形成异重流倒灌，非汛期干流冲刷淤积体，形成浑水到达坝前并使沿程支流淤积。