基于最小能耗率原理的河床稳定性判据

TV147; 为了解决河床稳定走势问题,基于最小能耗率、雷诺平均法以及变分原理,提出了河床稳定性判据.通过与文献资料数据、纵断面稳定系数进行比对,验证了此河床稳定性判据.同时,结合黄河下游自花园口至利津等7个水文站所形成的6个河段,在1972,1973,1975-1980,1982,1985,1987,1988和1991-2000年等21年的水文资料,对黄河下游不同河型进行了稳定性分析.结果表明:黄河下游河床稳定性逐渐降低,孙-艾和艾-泺河段稳定性最差,需要对河岸进行加固;黄河是地上悬河,高含沙水流中的泥沙在中下游逐渐淤积抬高了河床,从而导致河床稳定性降低....

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Published in	江苏大学学报（自然科学版） Vol. 38; no. 6; pp. 737 - 744
Main Authors	高仕赵, 赵丽娜, 尤再进, 郑春梅
Format	Journal Article
Language	Chinese
Published	鲁东大学土木工程学院,山东烟台,264025%大禹节水(天津)有限公司,天津,301712 01.11.2017
Subjects	riverbed variational principle 稳定性判据雷诺平均法 minimum rate of energy dissipation stability criterion Reynolds averaging method 最小能耗率原理河床变分原理
Online Access	Get full text
ISSN	1671-7775
DOI	10.3969/j.issn.1671-7775.2017.06.020

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Abstract	TV147; 为了解决河床稳定走势问题,基于最小能耗率、雷诺平均法以及变分原理,提出了河床稳定性判据.通过与文献资料数据、纵断面稳定系数进行比对,验证了此河床稳定性判据.同时,结合黄河下游自花园口至利津等7个水文站所形成的6个河段,在1972,1973,1975-1980,1982,1985,1987,1988和1991-2000年等21年的水文资料,对黄河下游不同河型进行了稳定性分析.结果表明:黄河下游河床稳定性逐渐降低,孙-艾和艾-泺河段稳定性最差,需要对河岸进行加固;黄河是地上悬河,高含沙水流中的泥沙在中下游逐渐淤积抬高了河床,从而导致河床稳定性降低.
AbstractList	TV147; 为了解决河床稳定走势问题,基于最小能耗率、雷诺平均法以及变分原理,提出了河床稳定性判据.通过与文献资料数据、纵断面稳定系数进行比对,验证了此河床稳定性判据.同时,结合黄河下游自花园口至利津等7个水文站所形成的6个河段,在1972,1973,1975-1980,1982,1985,1987,1988和1991-2000年等21年的水文资料,对黄河下游不同河型进行了稳定性分析.结果表明:黄河下游河床稳定性逐渐降低,孙-艾和艾-泺河段稳定性最差,需要对河岸进行加固;黄河是地上悬河,高含沙水流中的泥沙在中下游逐渐淤积抬高了河床,从而导致河床稳定性降低.
Abstract_FL	To solve the problem of riverbed stability trend,the riverbed stability criterion was proposed based on the minimum rate of energy dissipation,Reynolds averaging method and variational principle.The riverbed stability criterion was verified by comparing literature data and longitudinal section stability coefficient.The 21years' hydrological data of 1972,1973,1975-1980,1982,1985,1987,1988,1991-2000 for six reaches of the Yellow River downstream formed by seven hydrometric stations from Huayuankou to Lijin were used to analysis the riverbed stability of the Yellow River downstream.The results show that the stability of the Yellow River downstream riverbed is gradually reduced,and the most unstable sections are in Sunkou and Aikou with riverbank needing to be reinforced.The reduced stability is due to that the Yellow River is aboveground river formed by the gradual silting of hyper-concentrated flow sediment at midstream and downstream with raised riverbed.
Author	赵丽娜郑春梅尤再进高仕赵
AuthorAffiliation	鲁东大学土木工程学院,山东烟台,264025%大禹节水(天津)有限公司,天津,301712
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Author_FL	GAO Shizhao YOU Zaijin ZHAO Lina ZHENG Chunmei
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