【摘要】：在深入分析澄碧河流域汛期變化特性的基礎(chǔ)上,以澄碧河水庫(kù)為例,選取暴雨日數(shù)、旬平均雨量、旬最大3天雨量、旬多年平均入庫(kù)流量、年最大洪峰出現(xiàn)次數(shù)等5個(gè)指標(biāo),采用Fisher最優(yōu)分割法進(jìn)行汛期分期研究,將汛期分為前汛期、主汛期和后汛期3個(gè)時(shí)期。結(jié)果表明,Fisher最優(yōu)分割法不僅能夠考慮多個(gè)指標(biāo),而且能夠有效避免常規(guī)方法在閾值選取和最優(yōu)分期數(shù)目確定上存在主觀性強(qiáng)的缺點(diǎn);與之前對(duì)澄碧河水庫(kù)分期的相關(guān)結(jié)果對(duì)比,該方法則更為客觀科學(xué),分期結(jié)果也更加合理可靠。
[Abstract]:On the basis of in-depth analysis of the characteristics of flood season variation in Chengbi River Basin, taking Chengbihe Reservoir as an example, five indexes, such as the number of rainstorm days, the average rainfall in ten days, the maximum rainfall in ten days, the average inflow in ten days and the number of times that Hong Feng appears in each year, are selected. The flood season is divided into three periods: the former, the main and the latter by using the Fisher optimal division method. The results show that the Fisher optimal segmentation method can not only consider multiple indexes, but also effectively avoid the disadvantages of subjectivity in the selection of threshold and the determination of optimal number of stages in conventional methods. Compared with the previous results of Chengbihe Reservoir, this method is more objective and scientific, and the results are more reasonable and reliable.
【作者單位】： 廣西大學(xué)土木建筑工程學(xué)院;廣西大學(xué)工程防災(zāi)與結(jié)構(gòu)安全教育部重點(diǎn)實(shí)驗(yàn)室;廣西大學(xué)廣西防災(zāi)減災(zāi)與工程安全重點(diǎn)實(shí)驗(yàn)室;
【基金】：國(guó)家自然科學(xué)基金資助項(xiàng)目(51569003) 廣西自然科學(xué)基金資助項(xiàng)目(2015GXNSFAA139248) 廣西防災(zāi)減災(zāi)與工程安全重點(diǎn)實(shí)驗(yàn)室系統(tǒng)性研究項(xiàng)目(2014ZDX01) 廣西水利廳科技項(xiàng)目(201507) 廣西高等學(xué)校優(yōu)秀中青年骨干教師培養(yǎng)工程項(xiàng)目(桂教人[2014]39號(hào)) 廣西研究生教育創(chuàng)新計(jì)劃資助項(xiàng)目(YCSW2017052)
【分類(lèi)號(hào)】：TV697.13

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