平原河网地区泵闸合建枢纽布置形式
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TV61

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上海市水务局科研项目(沪水科2018-01);上海市水务局科研项目(沪水科2018-08)


Arrangement types of a combined sluice-pump hub in plain river network region
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    摘要:

    由于泵闸合建后易导致枢纽上下游水流流态复杂化,因此需要合理选择具体布置形式以减轻不利影响。以上海地区拟建的赵家沟东泵闸工程为例,采用平面二维水动力数学模型对工程附近的水流流态进行模拟计算,从水动力条件角度对平原河网地区泵闸合建枢纽的不同平面布置形式进行比选分析。结果表明:从枢纽上下游总体流态看,泵闸对称布置形式的水动力条件优于不对称布置形式;从节制闸排涝时闸下流速分布看,对称布置形式中的“闸+泵+闸”形式比“泵+闸+泵”形式对减轻闸下冲刷更为有利;从节制闸引水时内河侧通航水流条件看,“闸+泵+闸”形式比“泵+闸+泵”形式对内河通航横流的影响明显减小,当采用相同内河侧通航横流限制条件时,“闸+泵+闸”形式比“泵+闸+泵”形式允许的过闸流量明显增大。

    Abstract:

    Due to the complexity of the flow pattern in the upstream and downstream of the combined sluice-pump hub, reasonable selection for arrangement types is required to reduce the adverse effects. Taking the Zhaojiagou East Combined Sluice-Pump Hub in Shanghai as an example, comparison and selection for different arrangement types of a combined sluice-pump hub in plain river network regions were analyzed in the aspect of hydrodynamic conditions based on two-dimensional numerical simulation of the flow patterns near the project. The results show that, symmetric arrangements are superior to asymmetric ones in terms of the overall flow patterns in the upstream and downstream of the hub. In terms of the velocity distribution during flood drainage, the sluice-pump-sluice arrangement is superior to the pump-sluice-pump arrangement in the symmetric arrangement types, because it is more beneficial to reduce the scour downstream the sluice. From the perspective of river navigation conditions during water diversion, the influence of sluice-pump-sluice arrangement on the navigable cross-flow of the inland river is obviously reduced compared with the pump-sluice-pump arrangement. The allowable discharge of the sluice-pump-sluice arrangement is obviously larger than that of the pump-sluice-pump arrangement under the same restrictions on the navigable cross-flow of the inland river.

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陆倩,崔冬,田利勇,等.平原河网地区泵闸合建枢纽布置形式[J].水利水电科技进展,2019,39(3):62-67.(LU Qian, CUI Dong, TIAN Liyong, et al. Arrangement types of a combined sluice-pump hub in plain river network region[J]. Advances in Science and Technology of Water Resources,2019,39(3):62-67.(in Chinese))

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  • 在线发布日期: 2019-05-27
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