金沙江中坝大桥通航安全风险分析

Analysis of Navigation Safety Risks of Jinsha River Zhongba Bridge

随着长江干线航道等级的提升,地区经济发展需要,长江上游通航船舶吨位日益增大,桥梁通航安全隐患日趋明显。以金沙江中坝大桥为例,针对长江上游建成年份较早的桥梁,通过对桥梁尺寸、通航净空、船舶撞击等多方面分析,指出桥梁在航道通航方面存在的安全隐患,并有针对性的提出通过工程措施、限制通航措施、制定相关制度等方面采取相关手段,消除船舶通航过程中的船舶和桥梁自身的安全隐患,为类似跨越高等级航道桥梁的通航安全管理提供参考。

By upgrading trunk channel of the Yangtze River,the demand for regional economic development leads to the increment of tonnage for the vessels in the upper reaches of the Yangtze River.However,more and more potential hazards are found when ships navigate through bridges.As a bridge built early in the upper reaches of the Yangtze River,Jinsha River Zhongba Bridge is analyzed from the aspects of size,navigable clearance,ship impact risk and etc.,which shows the hidden dangers in navigation safety.In the case,relevant measures are put forward,including engineering means,navigation restriction,relevant rules and regulations.The above can prevent safety risks from ships and bridges,and serves as a reference for the management of navigation safety in terms of high-level bridges.