本文選題：非粘性河流 + 河流阻力規(guī)律�。� 參考：《天津大學(xué)》2014年碩士論文

【摘要】：在自然界中,河流系統(tǒng)分布廣泛,且與人類活動密切相關(guān),河流形態(tài)特征的變化規(guī)律是人類認(rèn)識與改造河流的主要課題,了解其類型特點(diǎn)是河流研究中的重要內(nèi)容。水流在其行進(jìn)過程中遵守阻力規(guī)律,由于周圍環(huán)境的不同,其宏觀表現(xiàn)形式也多種多樣。河流的阻力規(guī)律決定于其形態(tài)特征,同時河流形態(tài)特征也反映其阻力規(guī)律。本文考慮影響河流水力損失的多種因素,引入無量綱的河流形態(tài)參數(shù),得到自然河流的阻力規(guī)律表達(dá)式。由該阻力規(guī)律出發(fā),得到河流形態(tài)參數(shù)的表達(dá)式,并將其作為河流分類標(biāo)準(zhǔn)。本文還加入了地貌因素的影響,應(yīng)用得到的表達(dá)式細(xì)致劃分了河流類型。為了證明該分類方法的正確性,本文采用經(jīng)典數(shù)據(jù)集驗(yàn)證和室內(nèi)試驗(yàn)驗(yàn)證兩種方法進(jìn)行分析,對比發(fā)現(xiàn),本文中所得到的河流理論類型與其他學(xué)者得到的結(jié)果符合良好,雖然存在少量偏差數(shù)據(jù)點(diǎn),但通過文中的詳細(xì)分析,更為證實(shí)了該方法的優(yōu)越性。研究結(jié)果表明,該分類方法計(jì)算簡單,對于非粘性河流應(yīng)用效果較好。
[Abstract]:In nature, the river system is widely distributed and closely related to human activities. The change law of river morphology is the main topic of human understanding and transformation of rivers, and understanding its type is an important part of river research. The flow obeys the law of resistance in the course of its travel, and its macroscopic forms are varied because of the difference of the surrounding environment. The resistance law of rivers is determined by their morphological characteristics, and the characteristics of rivers also reflect their resistance laws. In this paper, considering many factors affecting river hydraulic loss, the dimensionless parameters of river form are introduced, and the expression of resistance law of natural river is obtained. According to the law of resistance, the expression of river shape parameters is obtained, and it is regarded as the standard of river classification. The effects of geomorphological factors are also included in this paper, and the derived expressions are used to divide the river types in detail. In order to prove the correctness of the classification method, the classical data set verification method and the indoor test verification method are used in this paper. The comparison shows that the river theory types obtained in this paper are in good agreement with the results obtained by other scholars. Although there are a few deviation data points, the advantages of this method are proved by the detailed analysis in this paper. The results show that the classification method is simple and effective for non-viscous rivers.
【學(xué)位授予單位】：天津大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2014
【分類號】：TV147

【參考文獻(xiàn)】

相關(guān)期刊論文 前1條

1 許炯心;砂質(zhì)河床與礫石河床的河型判別研究[J];水利學(xué)報;2002年10期

，

本文編號：2027421