After regulation works, the navigation conditions will be greatly improved, the number of rapids-heaving for upriver ship will be reduced.
工程后的航行条件将有较大的改善，原来船舶上行的三绞减为一绞。
2
In the regulation design ofnavigation channel of mountain rivers, rapids suppression hydraulic indexes should firstly be determined.
消滩水力指标是山区河流航道整治设计中必须首先明确的问题。
3
This paper analyzes the characteristics and navigation-obstructing reasons of Xialong Shoal of Hongshuihe River, and presents the regulation engineering scheme and regulation effect.