【摘要】：采用自主研發(fā)的水位、泥沙運(yùn)動同步觀測系統(tǒng),分析相同幅度、不同周期非恒定流條件下卵礫石起動試驗研究,其中水位與泥沙運(yùn)動觀測系統(tǒng)主要由相機(jī)、超聲水位計組成。提出了卵石運(yùn)動圖像的分析方法,能夠有效識別經(jīng)過斷面的卵石運(yùn)動。初步對非恒定流條件下卵礫石輸移進(jìn)行研究,試驗結(jié)果表明,非恒定流條件下,上升段輸沙強(qiáng)度大于下降段輸沙強(qiáng)度,隨著周期的增加,上漲段與下降段的輸沙強(qiáng)度差逐漸減小。
[Abstract]:The self-developed synchronous observation system of water level and sediment movement is used to analyze the initial test of gravel under the same amplitude and different periods of unsteady flow. The observation system of water level and sediment movement is mainly composed of camera and ultrasonic water level meter. The analysis method of pebble motion image is put forward, which can effectively identify the pebble movement passing through the cross section. The primary study on gravel transport under unsteady flow conditions shows that the intensity of sediment transport in rising section is greater than that in descending section under unsteady flow condition, and increases with the increase of cycle. The difference of sediment transport intensity between the rising section and the descending section is gradually decreasing.
【作者單位】： 重慶交通大學(xué)國家內(nèi)河航道整治工程技術(shù)研究中心;重慶交通大學(xué)水利水運(yùn)工程教育部重點(diǎn)實驗室;
【基金】：國家自然科學(xué)基金項目(51679020) 重慶市社會民生科技創(chuàng)新專項(cstc2016shmszx30012) 重慶市教委科學(xué)技術(shù)研究項目(KJ1500539)
【分類號】：TV142

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