山区河流码头设计高水位的研究

按照现行规范规定,码头设计高水位是按洪水重现期来确定的。山区河流具有洪水过程历时短、峰值高、峰型尖瘦的特点,且洪水水流形态恶劣,采用洪水重现期法确定的码头设计高水位大大超出了各地禁航水位,很难满足到港船舶的进出港和停靠要求;同时,采取该水位确定的码头高程较高,增加了工程投资,但延长的港口作业时间仅仅3 d。通过收集几个典型工程的模型试验资料以及几个水文站的水文统计数据并进行分析,研究探讨了采用高水通航历时保证率法确定码头设计高水位的可行性和合理性。

Designed high stage of wharf at mountainous river

In the existing code,the flood frequency standard is used to determine the port designed high water stage.The mountain river has the characteristics of short lasting time for the flood course,high perk value and sharp-thin peak shape,and the flow pattern is rather bad.The wharf's designed high stage,which is determined by the flood frequency standard,greatly exceeds the prohibited navigable stage in all place,and it is difficult to meet the demand for ships' entering,leaving and berthing at the port.The top...