40万吨级矿石船进出渤海深水航路乘潮问题分析

为保障40万吨级矿石船安全进出曹妃甸港,通过ADCIRC潮位数学模型研究渤海潮波传播规律。结合船舶航行方式,采用多站联合法求取40万吨级矿石船在渤海超长深水航路的乘潮水位。结果表明:40万吨级矿石船在乘潮保证率90%、乘潮时间8 h进入渤海水域的乘潮水位为1. 0 m,乘潮保证率90%、乘潮时间8 h驶出渤海水域的乘潮水位为0. 2 m。可见同一乘潮保证率和时间下的乘潮水位,进入渤海水域明显高于驶出渤海水域;多站联合法确定的进入渤海水域乘潮水位大于单潮站确定的乘潮水位(0. 6 m);驶出渤海水域乘潮水位小于单潮站确定的乘潮水位(0. 7 m)。

On Riding High Tide Level of The 400 000DWT Carrier in Bohai Deepwater Route

In order to ensure the safety of 400,000 DWT carrier entering and leaving Caofeidian port, the propagation law of tidal waves in the Bohai Sea is studied by using ADCIRC tidal level mathematical model. The tide level of 400 000 DWT carrier in the Bohai Sea super-long deep water route is calculated by multi-station joint calculation method, combined with the ship navigation mode. The results show that the tidal level of 400 000 DWT carriers is 1.0 m when it enters the harbor under the condition of 90% guarantee rate and 8 hours tide ride, and the tidal level is 0.2 m when it departures under the condition of 90% guarantee rate and 8 hours tide ride. That means the tide level corresponding to the same tide ride duration and cumulative frequency is obviously higher than that of the outbound. The tidal water level calculated jointly by Multi-stations is higher than that calculated by single tidal station; the outbound tidal level is less than the level calculated by single tidal station.