【摘要】：為了解決河床穩(wěn)定走勢問題,基于最小能耗率、雷諾平均法以及變分原理,提出了河床穩(wěn)定性判據(jù).通過與文獻(xiàn)資料數(shù)據(jù)、縱斷面穩(wěn)定系數(shù)進(jìn)行比對,驗(yàn)證了此河床穩(wěn)定性判據(jù).同時(shí),結(jié)合黃河下游自花園口至利津等7個(gè)水文站所形成的6個(gè)河段,在1972,1973,1975—1980,1982,1985,1987,1988和1991—2000年等21年的水文資料,對黃河下游不同河型進(jìn)行了穩(wěn)定性分析.結(jié)果表明:黃河下游河床穩(wěn)定性逐漸降低,孫-艾和艾-濼河段穩(wěn)定性最差,需要對河岸進(jìn)行加固;黃河是地上懸河,高含沙水流中的泥沙在中下游逐漸淤積抬高了河床,從而導(dǎo)致河床穩(wěn)定性降低.
[Abstract]:In order to solve the problem of river bed stability, a criterion of river bed stability is proposed based on the minimum energy consumption rate, Reynolds average method and variational principle. The stability criterion of the river bed is verified by comparing with the literature data and the stability coefficient of the longitudinal section. At the same time, according to the hydrological data of 7 hydrologic stations from Huayuankou to Lijin in the lower reaches of the Yellow River, the stability of different river types in the lower Yellow River was analyzed on the basis of the hydrological data from 1972 to 1985, 19871988 and 1991-2000. The results show that the stability of the riverbed in the lower reaches of the Yellow River decreases gradually, and the stability of the section of Sun-Ai He Il-Luohe is the worst, so it is necessary to reinforce the riverbanks. The Yellow River is suspended on the ground, and the sediment in the high sediment flow gradually silts up the riverbed in the middle and lower reaches of the river, which results in the decrease of the stability of the riverbed.
【作者單位】： 魯東大學(xué)土木工程學(xué)院;大禹節(jié)水(天津)有限公司;
【基金】：山東省優(yōu)秀中青年科學(xué)家科研獎(jiǎng)勵(lì)基金資助項(xiàng)目(BS2014SF016) 山東省“泰山學(xué)者”人才工程項(xiàng)目(shw201502050) 魯東大學(xué)博士啟動(dòng)基金資助項(xiàng)目(LY2014026) 山東省自然科學(xué)基金資助項(xiàng)目(ZR2011EL049) 中國海域波能再生資源變化趨勢的綜合評估項(xiàng)目
【分類號】：TV147

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本文編號：2421394