开敞海域淤泥质浅滩深挖槽航道边坡研究  

Study on slope for deep-cut channel in exposed muddy shallows

作　　者：张建锋 王玉东 侯海伟 丁琦 郭冬冬 马兴华 

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 [2]中交上海航道局有限公司,上海200002

出　　处：《中国港湾建设》2016年第12期8-13,共6页China Harbour Engineering

基　　金：国家高技术研究发展计划(863计划)课题(2012AA112509)

摘　　要：安全、经济地确定航道边坡坡度意义重大.依托连云港徐圩港区5 万-10万吨级航道工程,在现场观测分析的基础上,从岩土整体稳定角度和波浪动力角度,研究提出了开敞海域淤泥质浅滩深挖槽航道边坡设计方法.结果表明,在连云港徐圩航道区域,航道边坡坡比采用1 ： 7 是基本稳定的;选用无侧限抗压试验指标作为航道边坡岩土稳定分析计算参数,提升了岩土整体稳定分析手段在航道边坡设计的作用;首次采用波浪摩阻流速研究了不同浪级、波向、坡度、航道等级条件下波浪动力对航道稳定性的影响.It is of great significance to determine the gradient of channel slope on a stable and cost-effective basis. Based on the 50 000~100 000 DWT channel project in Xuwei Terminal of Lianyungang Port as well as the analysis of site findings and measurements, we proposed the methods for the design of slope gradient of the deep-cut channel in the exposed muddy shallows from the view of overall soil stability and wave dynamics. The results show that it is stable to set the channel slope at1 ∶ 7 in the area of Xuwei Terminal of Lianyungang Port; choosing the unconfined compressive test index as the calculation parameter of stability analysis of rock slope enhances the role of geotechnical stability analysis in the design of channel slope;the influence of wave motions on channel stability under different waves, wave directions, gradients and channel gradients was studied for the first time.

关 键 词：航道边坡 设计方法 开敞海域 深挖槽 

分 类 号：U612.32[交通运输工程—船舶及航道工程]