舟山市鱼山绿色石化基地是我国七大石化基地的重要组成部分,也是打造全国首个绿色发展标杆的石化基地,液化天然气(LNG)码头建设对基地发展十分重要.通过挖掘水域优势,将LNG船舶移动安全区设定为前1 n mile、后0.5 n mile、左右各1倍船长(约300 m),给对向船舶预留了约360 m宽的通道,解决了LNG船舶航行过程中对向封控的问题.通过使用代入法,分区段定量分析LNG船舶进出港过程中需要协调避让的船舶数量,形成LNG码头建设后的交通场景.通过对沪舟通道岱山北航道桥、LNG船舶和周围水域的三维建模,采用操纵试验手段,得出LNG专用航道转向点与跨海大桥的安全间距不宜小于6倍船长.
Key issues and countermeasures for ship navigation in planning and site selection of Yushan LNG terminal
The Yushan green petrochemical base in Zhoushan is an important component of China's seven major petrochemical bases,and also the first petrochemical base to build a green development benchmark in the country.The construction of liquefied natural gas(LNG)terminal is very important for the development of the base.We explore the advantages of water areas to reasonably set up the movement safety zone for LNG ships as 1 n mile in front,0.5 n miles behind,and 300 meters in each side,reserve a 360 meters wide channel for opposing ships,and solve the problem of opposing containment during the navigation process of LNG ships.By using the substitution method,we conduct a quantitative analysis on the number of ships that need to be coordinated and avoided during the entry and exit process of LNG ships,vividly depicting the traffic scene after the construction of the LNG terminal.Through three-dimensional modeling of the Daishan North Channel Bridge on the Shanghai-Ningbo Channel,LNG ships,and surrounding water areas,we use maneuvering test methods,and propose that the safety distance requirements for the turning point of the LNG dedicated channel and the cross sea bridge should not be less than 6 times the length of the ship.
Yushan green petrochemical baseLNG shipschannel passage efficiencysafe distance between channel turning and bridge axis
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维普
