The measured data show that the bedload sediment transport rate is related more closely to the effective stream power within the bed - surface layer than to the river stream power 實測資料表明,推移質(zhì)輸沙率與床面層內(nèi)有效水流功率有良好的相關(guān)性,且高于推移質(zhì)輸沙率與水流功率的相關(guān)性。
Based on the relationship between energy and flow within the bed - surface layer , a relationship between the bedload sediment transport rate and effective stream power within the bed - surface layer is derived 摘要基于床面層內(nèi)的水流能量關(guān)系,推導了推移質(zhì)輸沙率與床面層內(nèi)有效水流功率的關(guān)系式。
An expression is derived using basical concepts of physics ( i . e . mass conservation ) , to define the relationship between sediment transport rate and vertical flux of sediment to the seabed 從基本的物理概念和物質(zhì)守恒定律導出了海底沉積物通量的計算表達式,應用該式取得了與實際海域相符的海底沖淤分布圖。
Verification results of more than 2800 runs of channel experiment data and field data show that this formula has good applicability and high accuracy , and is better than the other formulae for bedload sediment transport rate based on the stream power 經(jīng)2800組試驗資料與天然河流資料的檢驗表明,該關(guān)系式的適應性良好,計算精度較高,并優(yōu)于同類型的基于水流功率的推移質(zhì)輸沙率公式。
The results show that there is a power function relation between rainfall intensity and runoff duration and a linear relation between rainfall intensity and sediment transport rate of unit width , and we find the experienced coefficient of above relations through regression analysis 結(jié)果表明,產(chǎn)流時間和降雨強度之間存在冪函數(shù)關(guān)系,與單寬輸沙率之間存在線性關(guān)系,單寬輸沙率與單寬流量之間亦存在線性關(guān)系。