摘要
寸滩水文站水位流量关系变化不仅影响重庆附近防洪形势,亦关系到三峡水库入库洪峰和水量计算的准确性。重点分析了洪水峰型、洪水形态、河道断面变化及三峡水库坝前水位等影响因素,选取长江上游多场历史典型洪水,基于实况比较及数值模拟手段,量化分析了不同水力因素影响下寸滩水文站水位流量关系的变化规律,为保障重庆市主城区和长江流域的防洪安全提供了技术支撑。
The change in stage-discharge relation at Cuntan hydrological station not only affects the flood control near Chongqing,but also affects the accuracy in the calculation of flood peak and water quantity entering into the Three Gorges Reservoir.This paper focuses on the influencing factors such as flood peak patterns,flood shape,changes in river cross-section,and water level in front of the dam.By selecting several typical flood events in the upper reaches of the Yangtze River,and by means of comparison and numerical simulation,we quantitatively analyzed the stage-discharge relation at Cuntan hydrological station under the influence of different hydraulic factors.The analysis provides technical support for ensuring the safety of the urban area of Chongqing and the Yangtze River Basin.
作者
闵要武
杨雁飞
张俊
曾明
MIN Yaowu;YANG Yanfei;ZHANG Jun;ZENG Ming(Bureau of Hydrology,Changjiang River Water Resources Commission,Wuhan430010,China)
出处
《水利水电快报》
2021年第1期17-21,共5页
Express Water Resources & Hydropower Information
基金
三峡水库科学调度关键技术研究项目(SXSN/4578)。
关键词
水位流量关系
水面线
洪水形态
寸滩站
三峡水库
stage-discharge relation
water surface profile
flood shape
Cuntan hydrological station
Three Gorges Reservoir