| 段文忠,郑亚慧,刘建军.长江城陵矶-螺山河段水位抬高及原因分析[J].水利学报,2001,32(2):0029-0035 |
| 长江城陵矶-螺山河段水位抬高及原因分析 |
| Causes of water level rising in Chenglingji Luoshan reach of Changjiang River |
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| DOI： |
| 中文关键词: 水位 防洪 江湖关系 长江城螺河段 |
| 英文关键词: water level rising flood control relation between river and lake cheng lingji-luo shan reach of chang jiang river |
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| 中文摘要: |
| 长江城螺河段水位80年代以来较50～60年代明显抬高，一般枯水位抬高1.20～1.50m，高水位抬高0.50～0.76 m；城陵矶水位在受到顶托时抬高可达1.80 m以上。本文依据40年来荆江及洞庭湖间水量、沙量等实测资料对这一问题进行了全面分析，分析结果表明，发生这种变化的原因主要是下荆江裁弯后加速了三口的萎缩，江湖关系与下荆江出口河势发生变化所致。这一分析成果可为制定长江防洪规划提供科学依据。 |
| 英文摘要: |
| Since 80's the water level in Chenglingji Luoshan reach of Changjiang River is much higher than it was in 50's.The rising is 1.20-1.50m in the period without rainfall and 0.50 m-0.76m in flood season.To investigate the cause of water level rising,analysis on observation data of flow discharge and sedimentation in 40 years is carried on.It is concluded that the rectification of lower reach in Jingjiang River accelerates the atresia of debouchments.Consequently,the relation between the river and lake has been changed. |
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