摘要
秤杆碛是嘉陵江上一大型的卵砾石边滩,在实地勘测秤杆碛河段基础上提出多个采砂方案。通过物理模型研究该河段卵石输移规律,建立采砂河段贴体正交坐标系下的平面二维水流数学模型,并利用该模型研究嘉陵江秤杆碛边滩采砂后河道水流条件的变化。结果表明,采砂对河床演变、通航、河道行洪以及涉河工程的影响很小。
Chenganqi bar is a large-scale pebble beach on the Jialing River. Based on the site investigation, several sand excavation schemes are proposed. The pebble transportation law is studied by physical model, and a 2- D horizontal numerical model in orthogonal body-fitted coordinate for flow is established to study the variation of flow condition caused by sand excavation. The calculation results show that the influence of sand excavation on riverbed evolution, navigation, flood carrying capacity and wading engineering of the Jialing River is very small.
出处
《水运工程》
北大核心
2008年第2期73-77,共5页
Port & Waterway Engineering
关键词
采砂
物理模型
平面二维数学模型
河床演变
通航
sand excavation
physical model
2-D horizontal numerical model
riverbed evolution
navigation
