基于最小下泄流量的水位衔接模拟研究：以大渡河铜街子-沙湾电站为例

王建华; 王乐; 曲田; 邱辉; 李书飞; 曾明; 董轩; 黄克威

doi:10.13928/j.cnki.wrahe.2025.S1.084

水利水电技术（中英文） ›› 2025, Vol. 56 ›› Issue (S1) : 547 -552. DOI: 10.13928/j.cnki.wrahe.2025.S1.084

运行管理

基于最小下泄流量的水位衔接模拟研究：以大渡河铜街子-沙湾电站为例

王建华 ¹ ,
王乐 ²^,³ ,
曲田 ¹ ,
邱辉 ²^,⁴ ,
李书飞 ⁵ ,
曾明 ²^,⁶ ,
董轩 ²^,⁴ ,
黄克威 ⁵

作者信息 +

Simulation on connected water level under minimum discharge flow of Tongjiezi-Shawan Power Station in Dadu River Basin

Jianhua WANG ¹ ,
Le WANG ²^,³ ,
Tian QU ¹ ,
Hui QIU ²^,⁴ ,
Shufei LI ⁵ ,
Ming ZENG ²^,⁶ ,
Xuan DONG ²^,⁴ ,
Kewei HUANG ⁵

Author information +

文章历史 +

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摘要

水位衔接对大渡河流域水资源高效利用具有重要影响。基于2017—2022年的实况和测量数据，利用水文学和水动力模拟方法，分析了大渡河流域铜街子-沙湾电站在最小下泄流量条件下的衔接关系，并提出了相应的最小下泄流量保障方式。结果表明：受水库运行后长期冲刷影响，铜街子坝下水位流量关系曲线较设计阶段出现一定程度的右偏，同流量下对应的水位偏低。沙湾水库库尾回水对铜街子坝下水位存在顶托影响，当沙湾库水位在431 m以上时顶托作用较为明显。铜街子-沙湾为不完全衔接关系，其衔接水位为430.47 m,较设计衔接水位降低1.53 m,采用新的衔接水位能够在满足最小下泄需求的同时，更好的提升上下游梯级之间的水能资源利用效率。

Abstract

Connected water level is an important factor affecting the efficient utilization of water resources in Dadu River Basin. Based on the latest real and measured data, the connected relationship of Tongjiezi-Shawan Power Station in Dadu River Basin under the minimum discharge flow was analyzed by using hydrological and hydrodynamic simulation method, and the corresponding minimum discharge flow guarantee method was proposed. The result show that, under the influence of long-term scouring after reservoir operation, the stage-discharge relation below the Tongjiezi dam shows a right deviation compared with the design stage, and the corresponding water level is relatively low under the same flow. The backwater at the end of Shawan Reservoir has a jacking effect on the water level below Tongjiezi Dam, and the jacking effect is more obvious when the water level of Shawan Reservoir is above 431 m. The latest data shows that Tongjiezi-Shawan has an incomplete connected relationship, with a connected water level of 430.47 m, which is 1.53 m lower than the designed connected water level of 432 m. Adopting the new connected water level can improve the efficiency of water resource utilization between upstream and downstream cascades while meeting the minimum discharge demand.