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-  2017 

试验性蓄水期嘉陵江长江交汇河段的冲淤特性 Study of sediment silting-scouring in Jialing-Yangtze confluence reach during 175m experimental impoundment period

Keywords: 三峡工程,变动回水区,交汇河段,冲淤特性

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Abstract:

变动回水区河段的侵蚀基准面在蓄水期抬升,在消落期和汛期逐渐恢复为天然状态,其冲淤调整特点不同于自然条件.以三峡库区嘉陵江与长江交汇河段为例,分析了175m试验性蓄水期前后交汇河段冲淤特性的变化.结果发现,175m试验性蓄水以前,交汇河段由于上游来沙持续减少出现了累积性冲刷,175m试验性蓄水以后,侵蚀基准面的抬升抑制了交汇河段的冲刷发展态势;其中支流嘉陵江来沙量减少的程度高于长江干流以及2008-2012年汛期汇流比大于2003-2007年,使得嘉陵江支流河段继续冲刷,而长江干流河段转为淤积.175m试验性蓄水前后交汇河段年内汛淤枯冲的基本规律未变,但主要走沙期由汛后推迟到了次年的水位消落期,走沙量减少

References

[1]  王协康,刘同宦,王宪业,等.受支流入汇作用主河推移质运动演化特征试验研究[J].四川大学学报(工程科学版),2005,37(6):8-9.Wang Xiekang,Liu Tonghuan,Wang Xianye,et al.Experimental study on evolution characteristics of bedload transport motion in main river with tributary action[J].Journal of Sichuan University(Engineering Science Edition),2005,37(6):8-9.
[2]  詹磊,董耀华,刘同宦.干支流直角交汇水流泥沙运动特性初步研究[J].长江科学院院报,2010,27(8):7-9.Zhan Lei,Dong Yaohua,Liu Tonghuan.Preliminary study on natures of flow structure and sediment transport in right-angled conjunction of main and branch channels[J].Journal of Yangtze River Scientific Research Institute,2010,27(8):7-9.
[3]  惠遇甲,张国生.交汇流河段水沙运动和冲淤特性的试验研究[J].水力发电学报,1990,(3):39-41.Hui Yujia,Zhang Guosheng.Experimental study on characteristics of flow and sediment in confluent river[J].Journal of Hydroelectric Engineering,1990,(3):39-41.
[4]  长江航道局.重庆河段走沙过程规律研究报告[R],2002.The Yangtze River Waterway Administration.The Research Report of Scouring Law at Chongqing Reach[R],2002.
[5]  兰波,汪勇.干支流交汇水面形态特征分析[J].重庆交通大学学报,1997,16(4):113-114.Lan Bo,Wang Yong.The analysis of water level characteristics in confluence between main and tributary river[J].Journal of Chongqing Jiaotong University,1997,16(4):113-114.
[6]  王协康,王宪业,卢伟真,等.明渠水流交汇区流动特征试验研究[J].四川大学学报(工程科学版),2006,38(2):3-5.Wang Xiekang,Wang Xianye,Lu Weizhen,et al.Experimental study on flow structure at open channel confluences[J].Journal of Sichuan University(Engineering Science Edition),2006,38(2):3-5.
[7]  刘同宦.边界条件变异的交汇流河段水沙运动规律初步研究[D].武汉:武汉大学,2012.Liu Tonghuan.Study on flow pattern and sediment transportation at river confluences with boundary condition variation[D].Wuhan:Wuhan University,2012.
[8]  刘同宦,王协康,郭炜,等.支流水沙作用下干流床面冲淤特征试验研究[J].长江科学院院报,2006,23(2):10-11.Liu Tonghuan,Wang Xiekang,Guo Wei,et al.Experimental study on bed morphology at channel confluence with tributry action[J].Journal of Yangtze River Scientific Research Institute,2006,23(2):10-11.
[9]  闫涛,陈立,徐敏,平妍容.库区交汇河段水动力特性试验[J].河海大学学报(自然科学版),2015,(1):60-65.Yan Tao,Chen Li,Xu Min,Ping Yanrong.Experimental study of hydrodynamic characteristics at confluence reach in reservoir area[J].Journal of Hohai University(Natural Sciences),2015,(1):60-65.
[10]  Lin Bingnan,Zhang Ren,Dai Dingzhong,Tan Ying.Sediment research for the Three Gorges Project on the Yangtze since 1993[J].International Journal of Sediment Research,2005,20(1):30-38.
[11]  茅泽育,赵升伟,张磊,等.明渠交汇口三维水力特性试验研究[J].水利学报,2004,(2):1-6.Mao Zeyu,Zhao Shengwei,Zhang Lei,et al.Experimental study on 3Dflow characteristics at the confluence of open channels[J].Journal of Hydraulic Engineering,2004,(2):1-6.
[12]  陈立,段涛,闫涛,刘同宦,朱晓凯.库区交汇流河段泥沙淤积特性研究[J].四川大学学报(工程科学版),2013,45(3):57-62.Chen Li,Duan Tao,Yan Tao,Liu Tonghuan,Zhu Xiaokai.Study on sediment deposition characteristics at river confluence in reservoir area[J].Journal of Sichuan University(Engineering Science Edition),2013,45(3):57-62.
[13]  王协康,杨青远,卢伟真,等.交汇水流分离区特征研究[J].四川大学学报(工程科学版),2008,40(6):4-6.Wang Xiekang,Yang Qingyuan,Lu Weizhen,et al.Study on characteristics of separation zone in confluence river[J].Journal of Sichuan University(Engineering Science Edition),2008,40(6):4-6.
[14]  闫涛,陈立,陈珊,黄杰,朱晓凯.白石水库库区交汇河段不同遭遇洪水淤积试验[J].武汉大学学报(工学版),2014,47(1):18-22.Yan Tao,Chen Li,Chen Shan,Huang Jie,Zhu Xiaokai.Siltation test of confluence river reaches in Baishi reservoir under different flood encounter cases[J].Engineering Journal of Wuhan University,2014,47(1):18-22.
[15]  张绪进,母德伟,陈贤祎.上游来水来沙变化及对三峡水库回水变动区泥沙淤积的影响[J].水运工程,2009,(8):94-97.Zhang Xujin,Mu Dewei,Chen Xianyi.Impact on sediment deposition in the backwater of the Three Gorges Reservoir Area due to changes of the upstream sediment runoff[J].Port&Waterway Engineering,2009,(8):94-97.

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