[1]FU Jian-li,LI You-li.Geomorphological Effect of the Sanmenxia Reservoir on the Yellow River[J].Research of Soil and Water Conservation,2001,8(02):59-65.
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Geomorphological Effect of the Sanmenxia Reservoir on the Yellow River
Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
8
Number of periods:
2001年02期
Page number:
59-65
Column:
Public date:
1900-01-01
- Title:
- Geomorphological Effect of the Sanmenxia Reservoir on the Yellow River
- Keywords:
- erosion; deposition; Yellow River; Sanmenxia Reservoir
- CLC:
- P512.32
- DOI:
- -
- Abstract:
- The Sanmenxia Reservoir,located in the middle reaches of the Yellow River,has passed three stages since it was built up in 1960.From the September of 1960 to the March of 1962(the first stage),the reservoir storage high sediment water and drain low sediment water.From the April of 1962 to the October of 1973(the second stage),the gates was opened to drain in total year.Since the November of 1973(the third stage),it has begun to storage water during low water season,and drain during high water season.During the first stage,the reservoir was seriously filled with sediments,and deposition mostly took place between the Tongguan Gauge and the dam in the upstream reach.The waterlevel of the 1000 m3/s discharge increased at the Tongguan Gauge.Meanwhile,the downreach was scoured,except for some locations,channel narrowed between the dam and Aishan.During the second stage,the floodplain still accepted deposits during the high water season in the upstream reach.The waterlevel of 1000 m3/s discharge reached 326.64 m in high water season of 1973,3.14 m higher than in 1960 at the Tongguan Gauge.The increase rate is 0.24 m/a,much higher than 0.045 m/a before the dam building.The deposition mostly took place between the dam and Gaocun in the downstream reach.Affected by the reduction of the peak discharges,most sand deposited in the channel and point bar and the margin of the floodplain induced the channel uplifted and smaller suspended river formed in the greater suspended river.During the third stage,in low water season,the reservoir storage sediment and drain lower sand water,most channel of downstream reach has been scoured.In the high water season,high water discharges transport most sand to sea and reduce deposition along the Yellow River.
- References:
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- Similar References:
Memo
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Last Update:
1900-01-01