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OALib Journal期刊
ISSN: 2333-9721
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三峡水库不同调度方式运行期洞庭湖区的水情响应
DOI: 10.11821/xb201109010, PP. 1251-1260
Keywords: 长江三峡水库,调度方式,洞庭湖区,水情变化
Abstract:
运用1951-2002年典型年实测原型水文资料,对比分析2003-2010年三峡水库不同调度方式运行期对洞庭湖区水情的影响,结果表明(1)影响时间为每年5月25日-6月10日、7月1日-8月31日、9月15日-10月31日、12月-次年4月,其中枯期补水调度的影响不很敏感;(2)预泄调度,平水年径流有所增加,平均水位、最高水位均有上升。丰、枯年影响期径流增加平均值40.25×108m3;平均水位抬高平均值1.06m,最高水位壅高平均值1.06m;(3)蓄洪调度,平水年洪水量稍有上涨,枯、丰年影响期洪水减少平均值444.02×108m3,平均洪水位降低平均值2.64m,最高洪水位降低平均值1.42m;(4)蓄水调度,除平水年影响期径流增加、水位稍有壅高外,枯、丰年影响期径流减少平均值185.27×108m3,平均水位降低平均值3.13m,最高水位降低平均值2.14m;(5)补水调度,平、丰年影响期径流减少平均值337.7×108m3,平均水位降低平均值1.89m,最高水位降低平均值2.39m,但枯水年影响期径流量增加、平均水位与最高水位稍有抬高。关键词长江三峡水库;调度方式;洞庭湖区;水情变化
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