荆江沙市桥区河段航道治理思路及措施

Strategies and measures for waterway regulation of river reach in bridge region in Shashi City on Jinjiang River

长江中游沙市河段荆州长江公路大桥在遭遇1998年大洪水之后,桥区河段碍航问题更加严重,通航与桥梁安全矛盾突出。分析了沙市桥区河段的演变影响因素,并预测了演变趋势。对桥区河段的治理思路和工程措施进行了探讨,对航道整治工程的实施效果利用物理模型和数学模型进行了分析。结果表明,整治工程能够有效改善该河段的通航条件,且对水位影响小。提出了下一步巩固完善整治工程效果的建议。

After large Yangtze River flood in 1998, the navigation obstruction in the region of Jingzhou Highway Bridge in Shashi Reach of middle Yangtze River has became more serious, and the contradiction between navigation and bridge safety is obvious. The factors that influence the river evolution of this reach are analyzed, and the evolution trend is predicted. The regula- tion strategies of this reach and the engineering measures are studied, and the efforts of implementing the regulation measures are analyzed using physical and mathematical models. It shows that the navigation conditions can be improved by the regulation meas- ures and the influence on the water level is small. The suggestions for further reinforcement and perfection are provided.