Based on the theory of jet diffusion the formula for predicting the position of dune in equilibrium scourpit are deduced theoretically.
并在此基础上，利用射流扩散理论导出平衡冲刷坑堆丘位置的预报公式。
2
As far as the scour resistances on the rocky river beds are concerned, the lifting conditions considered resisting forces for rock blocks in the scourpit are investigated.
针对岩石河床的抗冲能力，探讨了考虑阻力的岩块起动的判别条件。
3
Based on the geological result of the scourpit of the Danjiangkou Project, it is expounded that rock mass characteristics are the internal factor in the formation of scourpit.