思贤滘西滘口航道整治试验研究

Experiment on the Improvement of Xijiaokou Channel of Sixianjiao

思贤是沟通西、北两江的重要水道，由于西口漩流和浅滩淤积问题，通航经常受阻，安全航行受到威胁。本研究项目从分析西口航道的险、浅成固开始，发现漩流形成和浅滩淤积都跟西江琴沙左汉水流动力有关，通过模型试验研究，采取在琴沙左汉建造低钠坝，以限制在汉水流动力排险，利用过坝水流冲沙治浅，在琴沙尼另辟新航道通航的方法，成功解决了思贤西港口航道的险和浅的问题。

Sixianjiao is an important waterway connecting the West River with the North River. Eddy flow and shallows in Xijiaokou Channel often hinder navigation and threaten the safety of navigation. Having analized the contributing factors causing danger and shallows in the channel, it is shown that the eddy flow and shallows are relaied to the dynamics of flow in the left branch of Qinsha of the West River. Through modeling tests,a low blocking darn is built in the left branch of Qinsha to eliminate the danger by limiting the flow dynamics of the left branch.sweep away the sediment by the flow discharging through the low dam and open a new navigation channel at Qinshawei,thus solving successfully the issues of danger and shallows in Xijiaokou Channel of Sixianjiao.