老堡口—新圩河段Ⅳ级航道建设条件分析

选取优良河段，采用等级流量比较法、稳定航深估算法研究该河段在其流量、比降、河床糙率等因素影响下可能达到的航道水深；再根据西江流域的规划船型和船型现状，提出建设Ⅳ级航道的尺度标准，综合分析该研究河段建设Ⅳ级航道的可行性。

The condition of constructing a level-4 navigation channel at the reach from Laobaokou to Xinxu

The flow level comparing method and the stable waterway depth estimating method were adopted in the fine reach to research the water depth that can be reached when this river is under the influence of factors such as flow,slope,and bed roughness.Furthermore,according to the planned ship type and the current situation of the ship type at the watershed of Xijiang river,the dimension standards for constructing a level-4 navigation channel was put forward,and the feasibility of constructing a level-4 channel at this reach was comprehensively analyzed.