| 摘要: |
| 由于沿江河道治理、航道整治、桥梁建设等人类活动以及海平面上升等因素的影响,南京以下沿程潮波发生变形,现行的基面需要重新计算与复核.通过收集沿程各站潮位资料,并利用一维数学模型对资料进行插补延伸;根据所得的沿程各站潮位资料,采用综合历时曲线法等手段对南京以下基面进行计算,比较现行基面与本次计算基面的差异.研究表明,南京以下现行的基面是可行的,且对船舶的航行是偏安全的,利用现行基面所测量的海图、地形图及研究成果可信有效. |
| 关键词: 深水航道 航行基面 理论基面 复核 |
| DOI： |
| 分类号:U612 |
| 基金项目:西部交通建设科技项目 |
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| Preliminary study on the navigation datum plane and theoretical datum plane for deep-water channel from Nanjing to Liuhe River estuary of Yangtze River |
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XIA Yun-feng,WEN Yun-cheng,ZHANG Shi-zhao,XU Hua
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(Nanjing Hydraulic Research Institute,Nanjing 210029,China)
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| Abstract: |
| With the development of the 12.5 m deep-water channel of the Yangtze River estuary,the deep water channel extending up to Nanjing is in urgent need.The start-up year of the existing datum of Nanjing downstream is 1970.In the study,the navigation datum upstream of Jiangyin has been adopted,and the theoretical datum downstream of Jiangyin has been used.With the human activities such as river channel regulations and bridge construction and the natural factors such as sea level rise,the tidal wave from Nanjing downstream has been transformed along distance,the existing datum needs to be recalculated and rechecked.In this paper,tide data of different stations along distance has been collected,interpolated,extended and completed by one dimensional mathematical model.Based on these tide level data,we calculated the datum plane of Nanjing downstream by use of integrated cumulative curve method,and compared the difference between existing datum planes and our calculation datum planes.It is shown that the existing datum planes can ensure ship navigation safety,and that the charts,topographic maps and relevant research results based on the existing datum are reliable and applicable. |
| Key words: deep-water channel navigation datum theoretical datum recheck |
