弯曲航道水流特性及岸坡稳定性研究  

Flow characteristics of bend channel and stability of bank slope

作　　者：李景娟[1] 段祥宝[1] 谢罗峰[1] 

机构地区：[1]南京水利科学研究院,水文水资源与水利工程科学国家重点实验室,通航建筑物建设技术交通行业重点实验室,江苏南京210029

出　　处：《水运工程》2016年第12期137-141,147,共6页Port & Waterway Engineering

基　　金：国家重点研发计划(2016YFC0401901);水利部堤防安全与病害防治工程技术研究中心开放基金(201506);水利部公益性行业科研专项(201401083);水利部“948”项目(201403)

摘　　要：对某段弯曲航道水流进行三维数值模拟,简要分析了弯道水流特性,并将弯曲航道水流淘刷作用耦合于岸坡稳定性二维数值模拟中,量化水流淘刷对岸坡稳定性的影响,在此基础上计算不同冲刷深度下的岸坡稳定性。结果表明:高水位情况下岸坡受环流淘刷作用的影响更大;冲刷深度越大,岸坡稳定系数越小;当冲刷达到一定程度,岸坡局部发生崩塌从而降低整体稳定性。Three dimensional numerical simulation of water flow in a curved channel is carried out, and the flow characteristics flow in the bend channel are briefly analyzed. By coupling the water erosion with two-dimensional numerical simulation of slope stability, the effect of water erosion on the stability of bank slope was quantified, and the slope stabilities under different scour depths were calculated.The results show that the slope is affected by water erosion more with high water level; The greater the scour depth, the smaller the slope stability coefficient is.The local bank slope collapses to lead to lower stability when the erosion reaches a certain degree.

关 键 词：弯曲航道 水流特性 耦合 岸坡稳定 冲刷深度 

分 类 号：U611[交通运输工程—船舶及航道工程]