| 随机理论方法在水文模拟中的应用 |
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| 引用本文： | 孙颖娜,付强,邢贞相.随机理论方法在水文模拟中的应用[J].东北农业大学学报,2010,41(6). |
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| 作者姓名： | 孙颖娜 付强 邢贞相 |
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| 作者单位： | 东北农业大学水利与建筑学院,哈尔滨150030;黑龙江大学水利电力学院,哈尔滨150086;东北农业大学水利与建筑学院,哈尔滨,150030 |
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| 基金项目： | 中国博士后科学基金，黑龙江省教育厅项目，黑龙江省水利厅项目，黑龙江大学博士启动金 |
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| 摘 要： | 水文模型中的参数是对实测资料进行分析研究的基础上通过优选得到的,因此存在一定的随机性。针对模型参数的随机性问题,文章以Nash模型为基础,应用随机理论对具有随机系数的汇流计算方法进行研究。将参数k作为随机变量引入到了Nash模型中,建立了具有随机系数的汇流模型,并对模型参数分别服从正态分布和Gamma分布进的情况推导出了随机S曲线的均值和方差的一般表达式,将其应用于襄阳-皇庄的汇流计算中,得到了较好的结果。该方法能为实际应用中估计各种防洪决策提供依据。
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| 关 键 词： | Nash单位线 随机理论 汇流计算 |
Application of the stochastic theory and method on hydrology simulation |
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| SUN Yingna,FU Qiang,XING Zhenxiang.Application of the stochastic theory and method on hydrology simulation[J].Journal of Northeast Agricultural University,2010,41(6). |
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| Authors: | SUN Yingna FU Qiang XING Zhenxiang |
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| Abstract: | Parameters of hydrologic models are obtained by a certain optimal method based on analysis on observed data, which are stochastic. Aimed at the randomness of parameters of hydrologic model, for Nash model, the random theory was used to study on flow concentration method with random coefficients. Parameter was looked on as a random variate in Nash model, then flow concentration model with random coefficients was built. For parameter obey normal and gamma distribution respectively, the formula mean and variance of random S-curve were derived, which were applied to flow concentration calculation in Xiangyang-Huangzhuang channel. The result of study showed calculation precise was very high. |
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| Keywords: | Nash unit curve stochastic theory flow concentration calculation |
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