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取水工程对松花江悦来河段影响研究

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为了研究引水工程的建设对松花江悦来河段水沙变化的影响，构建了松花江干流悦来河段的平面二维水沙数学模型，分析了引水工况对松花江悦来河段的流速、水位、分流比和冲淤分布的影响。研究结果表明:松北引渠引水入松花江致使入江处水位抬升为0。03～0。04 m，由于松南引渠引水，致使取水口附近的主河道水位下降约0。03 m;在天然条件下，松南下口引渠位置分流量为78 m3/s，分流比为8。8％，在取水方案下，松南上口引渠分流量为104 m3/s，分流比为8。5％，松南下口引渠分流量为323 m3/s，分流比为28。9％;在天然条件下，悦来河段主河道呈现冲刷状态，冲刷深度为1。0 m左右，双口引渠导致取水口附近的泥沙淤积较天然条件有所增加，其中松南引渠下口淤积更为显著，引渠口门处淤积厚度可达1。0m以上。
Influence of the implementation of water intake project in the Yuelai reach of the Songhua River
In order to study the influence of the implementation of water intake project on flow and sediment processes and river topography in the Yuelai reach of the Songhua River,a two-dimensional numerical model for flow and sediment transport is constructed and the influence of the water intaking on flow rate,water level,diversion ratio and channel erosion and deposition is further analyzed.The results show that:the water level at the inlet of the Songbei diversion canal will rise by 0.03～0.04 m,which is caused by the water intake pro-ject.However,the water level at the main river channel near the inlet of the Songnan diversion canal is re-duced by about 0.03 m.With the effect of water intaking,the diversion flow rate of the Songnan lower diver-sion canal increases from 78 m3/s to 323 m3/s,and its diversion ratio increases from 8.8％to 28.9％corre-spondingly.The diversion flow and its diversion ratio of the Songnan upper and lower diversion canal reach to 104 m3/s,its and about 8.5％respectively.The main river channel of the Yuelai reach shows a state of ero-sion under natural conditions,the erosion depth is generally about 1.0 m in 20 years.However,the sediment accumulation near the water intake increases with the effect of water intaking,where the reach at the lower mouth of the Songnan diversion canal deposits more significantly with the deposition thickness of more than 1.0 m at the entrance of the diversion canal.

Songhua RiverYuelai reachwater and sediment numerical modelriverbed evolution

孙艳玲、黄海、关见朝、杜江

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黑龙江省水利水电勘测设计研究院,黑龙江哈尔滨 150080

中国水利水电科学研究院,北京 100048

松花江 悦来河段 水沙数学模型 河道演变

国家自然科学基金青年科学基金中国水利水电科学研究院基本科研专项中国水利水电科学研究院基本科研专项中国水利水电科学研究院基本科研专项水沙科学与江河治理重点实验室项目

52009145SE0145B042021SE110145B0022021SE0199A102021SE110161B0012022

2024

10.16239/j.cnki.0468-155x.2024.02.008

泥沙研究
中国水利学会

泥沙研究

CSTPCD北大核心
影响因子：0.817
ISSN：0468-155X
年,卷(期)：2024.49(2)
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