榆林黄河东线马镇引水工程取水口水位流量关系曲线复核分析

Recheck Analysis of Water Level-discharge Relationship Curve of Water Intake of Mazhen Water Diversion Project in the East Line of Yulin Yellow River

榆林黄河东线马镇引水工程取水口水位流量关系曲线直接影响取水口建筑物的设计,对供水保证率和防洪安全具有重要影响。根据取水口及上下游新测的6处河道大断面,采用恒定非均匀流能量方程推求水面线的方法 ,通过推求不同流量对应的水面线,得到取水口断面水位流量关系曲线。根据复核的水位流量关系曲线和实测的水位流量资料与可行性研究阶段成果综合对比分析,可为取水口工程设计提供更准确合理的依据。

The relationship curve of water level and discharge at the intake of Mazhen Water Diversion Project on the eastern route of the Yellow River in Yulin directly affects the design of intake buildings,and has an important impact on the water supply guarantee rate and flood control safety.According to the six newly measured river sections at the water intake and the upstream and downstream,the water surface line is derived by using the constant non-uniform flow energy equation.By deducing the water surface line corresponding to different flow rates,the water level-flow relationship curve of the water intake section is obtained.Based on the review of the water level flow relationship curve and the measured water level flow data and the results of the feasibility study stage,a comprehensive comparative analysis can provide a more accurate and reasonable basis for the design of the water intake project.