三峡枢纽船闸水域船舶安全航速最小能见度分析

针对三峡枢纽因能见度不良严重影响过闸效率的难题,通过实船测试等原型观测手段,分析阵雾条件下过闸船舶单向控制性通航操纵特点,并实测制动冲程数据,借鉴同类船舶测试应用的经验公式,计算代表性船舶的制动冲程。从偏安全角度,分析三峡枢纽船闸水域规定的安全航速对应的最小能见度。结果表明,阵雾条件下200 m的能见度,能够满足船闸水域控制性通航要求,为进一步提高三峡枢纽通过能力提供参考。

Analysis of minimum visibility for safe velocity of ships in lock water of Three Gorges Project

Aiming at the problem that the poor visibility of the Three Gorges Project seriously affects the efficiency of gate-crossing,we use prototype observation method such as ship test to analyze the one-way controlled navigation maneuvering characteristics,and measure braking stroke data of the ship passing through the lock under fog condition.Referring to the empirical formulas of similar ship test applications,we calculate the braking stroke of representative ships,and analyze the minimum visibility requirement data corresponding to the required safe velocity in the lock water of the Three Gorges Project from a partial safety point of view.The results show that visibility of 200 m under fog condition can satisfy the requirement of controlled navigation in lock water,which can provide the references for further improving the passing capacity of the Three Gorges Project.