三峡升船机下闸首卧倒门运行区域非恒定流的运动特性  

Unsteady flow motion characteristics in operating region of lower head tumble gate of the Three Gorges ship lift

作　　者：闫晓青 YAN Xiao-qing(Three Gorges Navigation Authority,Yichang 443002,China)

机构地区：[1]长江三峡通航管理局,湖北宜昌443002

出　　处：《水运工程》2021年第8期117-121,138,共6页Port & Waterway Engineering

摘　　要：为了分析三峡升船机下游引航道与下闸首卧倒门运行区域非恒定流运动特性,采用Flow-3D软件建立三峡升船机承船厢与下闸首卧倒门运行区域的三维模型,通过水面波动荷载概化模型计算分析下游不同水位、不同波幅非恒定流对下闸首卧倒门运行的影响因素。研究下游非恒定流作用于卧倒门的理论计算力矩与卧倒门关门实测力矩的关系,提出卧倒门安全运行策略,降低由下游非恒定流作用而引起的下闸首卧倒门运行安全风险。结果表明,下游引航道较小的水面波动传递到升船机下闸首卧倒门运行区域将引起很大的水面波动,而枢纽下游水位对卧倒门运行影响较小。In order to analyze the characteristics of the unsteady flow of the downstream approach channel of the Three Gorges ship lift on the operation of lower head tumble gate, we use the Flow-3 D to establish a three-dimensional model of the tumble gate operation region and the ship chamber of the Three Gorges ship lift, calculate and analyze the influence factors of different downstream water levels and different fluctuation amplitude flow on the lower head tumble gate by the water flow fluctuation load generalizability theory, analyze the relationship between the calculated moment of the downstream unsteady flow acting on the tumble gate and the measured moment of the tumble gate closing process, and propose the safe operation strategy of the tumble gate to reduce the security risk of the lower head tumble gate due to the unsteady flow of downstream. The results show that the small water surface fluctuation in the downstream approach channel will cause great water surface fluctuation when it transmits to the lower head tumble gate area of the Three Gorges ship lift, but the downstream water level of the hub has little effect on the tumble gate operation.

关 键 词：升船机 下闸首 卧倒门 概化理论 水面波动 运行安全 

分 类 号：U642.1[交通运输工程—船舶及航道工程]