| 李国英.黄河河势演变中科氏力的作用[J].水利学报,2007,38(12):1409-1413 |
| 黄河河势演变中科氏力的作用 |
| Effect of Corliolis force on morphology evolution of Yellow River |
| |
| DOI： |
| 中文关键词: 科氏力 河势演变 黄河 |
| 英文关键词: Corliolis force morphology evolution historical data Yellow River |
| 基金项目: |
|
| 摘要点击次数: 2803 |
| 全文下载次数: 529 |
| 中文摘要: |
| 通过理论分析得到了科氏力使黄河水流运动向右岸偏转的机理，并给出了河流水面横比降与科氏力的定量关系以及不同纬度黄河各河段的科氏力大小。在详细分析黄河堤防决口记载、河道面积分布、控导工程位置、入海流路偏向等资料的基础上，得出尽管单位面积河岸短期内受到的科氏力在量值上较小，但由于长期作用，在河流发育与河势演变中的作用不容忽视的结论。在黄河堤防工程设计、河道整治规划、控导工程布置和入海流路选择等方面的研究和治河实践中应重视科氏力所引起的流路改变，以及由此导致的河岸侵蚀变形。 |
| 英文摘要: |
| The mechanism of the Yellow River channel deflecting to right side due to the effect of Corliolis force is analyzed theoretically and the quantitative relationship between Corliolis force and transverse gradient of water surface in cross sections of the river at different geographic latitudes is established. Based on the investigation on historical data of levee break record, difference of plain area between both sides of the river within the banks, locations of control and diversion engineering and deflections of seagoing river channel the conclusion that the effect of Corliolic force on river morphology evolution can not be neglected from the view point of long history is derived, though the magnitude of th
is force is small. It reminds that attention must be paid to the effect of this force on river erosion during levee design, planning of river training, planning of controlling hydraulic engineering and selection of the seagoing route for the Yellow River. |
|
查看全文
查看/发表评论 下载PDF阅读器 |
| 关闭 |