波浪作用下淤泥质浅滩航道边坡稳定性初探  

Study on Channel Slope Stability of Muddy Shoal under Wave Action

作　　者：张林海 陈巍博 Zhang Linhai;Chen Weibo(Shanghai Waterway Engineering Design and Consulting Co.,Ltd.,Shanghai 200120,China)

机构地区：[1]中交上海航道勘察设计研究院有限公司,上海200120

出　　处：《港工技术》2020年第6期8-11,共4页Port Engineering Technology

摘　　要：波浪对海床的作用可分为:波浪作用引起的底压、由底压引起的海床应力、海床的瞬时孔隙水压力和海床的残余孔隙水压力。本文将上述作用力施加至海床土体中,提出了一种考虑波浪作用的航道边坡稳定性计算方法。以连云港港30万t级航道一期工程徐圩航道的边坡为例,采用上述方法验算其稳定性。在现场观测分析的基础上提出一种定量化确定航道边坡的方法。为后续类似航道边坡设计提供一种定量化设计的思路。The influence of wave on seabed can be divided into bottom pressure under wave action,seabed stress under bottom pressure,instantaneous pore water pressure and residual pore water pressure of seabed.A calculation method of channel slope stability under wave action is proposed by applying the above forces on seabed soil.Based on Lianyungang Port phase-1 channel for ships up to 300000 tons,the stability of Xuwei channel slope is checked by using the above method.And then a quantitative method is proposed to determine the channel slope stability through the field observation and analysis,which will provide a quantitative design idea for similar design of channel slope.

关 键 词：航道边坡稳定性 波浪作用 超静孔隙水压力 设计方法 

分 类 号：U612[交通运输工程—船舶及航道工程]