JOURNAL OF YANGTZE RIVER SCIENTIFIC RESEARCH INSTI ›› 2012, Vol. 29 ›› Issue (12): 5-9.DOI: 10.3969/j.issn.1001-5485.2012.12.002

• WATER RESOURCES AND ENVIRONMENT • Previous Articles     Next Articles

Single Valued Processing of Stage-Discharge Relation in the Main Cross-Section of Middle Reaches of Yangtze River

WAN Feng-ming1,2, LONG Li-hua3, ZHANG Yue3   

  1. 1.Business School, Hubei University of Technology, Wuhan 430079, China;  2.Wuhan University of Technology, Wuhan 430070, China; 3. Hubei Water Resources Technical College, Wuhan 430202, China
  • Received:2011-10-12 Revised:2012-06-13 Online:2012-12-01 Published:2012-12-18

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Abstract: To better research the flood control impact on the middle Yangtze River, we analyzed the factors affecting the stage-discharge relation in the cross-sections at three hydrological stations, namely, Shashi, Luoshan, and Hankou Station. Furthermore, on the basis of the measured data of water level and flow during flood season (May-September) from 1981 to 2010, single valued processing is employed to obtain the stage-discharge relation curves, which are further fitted in accordance with the principle of least squares. Results indicate that the impact of stage-discharge curve can be eliminated to a minimum through the polynomial fitting, and the flow deduced from the relation curve calculated by mathematical formulas will be free from inconsistency caused by human objectivity. In practical application, the effect is better.

Key words:  stage-discharge relationship, single valued, polynomial fitting

CLC Number: 

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