挖入式港池口门回流运动特性分析  

Characteristic Analysis of Reflow in Entrance of Excavated Dock

作　　者：沈小雄[1] 贺晖[1] 张戈[1] 

机构地区：[1]长沙理工大学河海工程学院,湖南长沙410076

出　　处：《湖南交通科技》2004年第1期93-95,共3页Hunan Communication Science and Technology

摘　　要：挖入式港池口门附近普遍存在回流运动,与此类似的情况是冲积河流低水头枢纽的引航道。回流运动的特殊性引起泥沙在回流区淤积,给工程的运行带来不利的影响。根据概化模型实验结果,对回流的流速分布等进行了分析,并探讨了影响回流强度的因素,认为主流流速、港池轴线与主流流向的交角是影响回流强度的主要因素,提出了计算回流强度的经验公式。There exists universally reflow in the entrance of excavated dock, which is similar to approach channel of low head hydro-junction located in alluvial river. The reflow results in silt deposit in reflowing zone, which brings about unfavorable influence on the engineering operation. Based on the experimental data of generalized model, this paper analyzes velocity distribution of reflow, discusses factors influencing strength of reflow, considers that the major factors affecting velocity distribution are the mainstream velocity and the angle between mainstream line and basin axis, and provides the empirical formula to compute strength of the reflow.

关 键 词：挖入式港池 回流 水流运动 试验 引航道 

分 类 号：U653.3[交通运输工程—港口、海岸及近海工程]