周宁抽水蓄能电站下水库泄洪建筑物布置方案研究

发布时间：2018-06-30 10:42

本文选题：周宁抽水蓄能电站 + 联合调洪　；参考：《水利水电技术》2017年03期

【摘要】：针对周宁抽水蓄能电站调节库容小、洪水调节能力差,而且洪水的洪峰流量和洪量大等特点,用调整表孔、底孔结构尺寸的方式进行泄洪规模和表底孔泄洪能力分配的比选,探讨其泄洪建筑物的布置原则。不同方案的对比研究表明:最大下泄流量应以校核洪水下高水位时局部时段敞泄为原则进行设计,以减小闸门控制误差所造成的洪水雍高风险。对于调节能力差、洪水流量大的抽水蓄能电站工程,应布置表孔、底孔进行联合泄洪;底孔的布置应保证低水位时各频率洪水均得到快速下泄,避免在水位上升过程中出现滞洪现象;在总超泄能力满足泄洪要求的前提下,应选择表孔规模较大的方案,实现表孔和底孔泄流能力的优化分配。研究成果对调节能力差、洪水流量大的电站工程建设具有借鉴意义。
[Abstract]:Aiming at the characteristics of Zhouning pumped Storage Power Station, such as small regulating capacity, poor flood regulation capacity, and large flood Hong Feng discharge and flood volume, the scale of flood discharge and the distribution of flood discharge capacity of surface bottom hole are compared by adjusting the structure size of surface hole and bottom hole. The layout principle of flood discharge building is discussed. The comparative study of different schemes shows that the maximum discharge should be designed on the principle of checking the local open time when the flood is high, so as to reduce the flood risk caused by the gate control error. For pumped-storage power station projects with poor regulating capacity and large flood discharge, surface holes and bottom holes should be arranged for joint flood discharge, and the layout of bottom holes should ensure the rapid discharge of flood at all frequencies when the water level is low. In order to avoid the phenomenon of flood stagnation in the process of rising water level, the optimal distribution of discharge capacity of surface hole and bottom hole should be realized under the premise that the total excess discharge capacity can meet the requirement of flood discharge, and the plan of large scale of surface hole should be selected. The research results can be used for reference in the construction of hydropower station with poor regulating capacity and large flood discharge.
【作者单位】：中国电建集团华东勘测设计研究院有限公司;
【分类号】：TV65

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