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雅砻江流域近60a径流趋势特征分析 被引量:25
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作者 李荣波 魏鹏 +1 位作者 纪昌明 王渤权 《人民长江》 北大核心 2017年第5期38-42,共5页
为揭示雅砻江流域年径流趋势变化特征,综合运用Mann-Kendall法、累积距平曲线检验法、滑动t检验法以及R/S法等方法对锦屏水文站近60 a(1954~2013年)年径流量进行计算分析,总结出年际径流突变年份以及趋势特征,并采用线性回归法对突变年... 为揭示雅砻江流域年径流趋势变化特征,综合运用Mann-Kendall法、累积距平曲线检验法、滑动t检验法以及R/S法等方法对锦屏水文站近60 a(1954~2013年)年径流量进行计算分析,总结出年际径流突变年份以及趋势特征,并采用线性回归法对突变年进行突变成因分析。结果表明:受降水和下垫面等因素影响,1967年为突变年,该年前后径流趋势呈显著突变,且在未来年份中年径流有递增趋势。研究结果可为调度人员掌握雅砻江流域水文特性提供参考,进而指导下游水库群联合调度工作。 展开更多
关键词 径流 趋势特征 锦屏水文站 雅砻江流域
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Study on Seepage Control in Complicated Hydrogeological Conditions on the Right Bank of JinPing-I Hydropower Station
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作者 WU Yan 《International Journal of Technology Management》 2014年第8期147-153,共7页
With consideration of the special hydrogeological conditions and layout characteristics of the hydraulic structures, the seepage control measures of dam abutment and underground powerhouse on the right bank of JinPing... With consideration of the special hydrogeological conditions and layout characteristics of the hydraulic structures, the seepage control measures of dam abutment and underground powerhouse on the right bank of JinPing-I hydropower station is drawn up. Based on the three dimensional finite element analysis of seepage control with dry area virtual flow constant mesh analysis method, the rationality of the seepage control measures of dam abutment and underground powerhouse has been verified and the key factors affecting the effect of seepage have been compared. In combination with the curtain of dam abutment, the curtain of underground powerhouse is reasonable. The results showed that the steel liner of penstock after the curtain is necessary. 展开更多
关键词 Hydraulic structures Seepage control 3D finite element JinPing-I hydropower station
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