摘要
感潮河段受径流、潮流共同影响,闸下水位流量关系不易确定,为能够方便、准确的确定河口感潮段水闸闸下水位流量关系,该文以拟建木兰溪宁海闸为例,利用MIKE21水动力模块建立并验证木兰溪下游二维数学模型,考虑水闸泄流遭遇低潮和高潮,仿真计算闸下水位流量关系,用于水闸消能防冲设计和复核水闸泄流能力。结果表明,MIKE21水动力模型能够较好的做到不同下泄流量分别与高、低潮位的匹配,计算结果可靠,能够比较准确的得到宁海闸闸下水位流量关系,为工程建设提供科学依据。
The relationship between water level and discharge under sluice is not easy to determine due to the joint influence of runoff and tidal current.In order to determine the water level-discharge relationship of sluice in the tidal reach of the estuary,taking the proposed Ninghai Sluice of Mulan River as an example,this paper established and validated the 2D mathematical model of the downstream of Mulan River by using the MIKE21 hydrodynamic model.Considering the sluice discharge encounters low and high tide,the relationship between water level and discharge under sluice was simulated and used to design the sluice energy dissipation and sluice discharge capacity.The results showed that the MIKE21 hydrodynamic model can better match the different discharge flow with the high and low tide levels respectively,and the results were more reliable,meanwhile,it can accurately obtain the water level-discharge relation of Ninghai Sluice,therefor,it can provide scientific basis for engineering construction.
作者
王新强
WANG Xinqiang(Fujian Provincial Investigation, Design & Research Institute of Water Conservancy & Hydropower, Fuzhou 350001, China;Fujian Key Laboratory of Hydrodynamics and Hydraulic Engineering, Fuzhou 350001, China)
出处
《广东水利水电》
2021年第10期42-47,共6页
Guangdong Water Resources and Hydropower
关键词
MIKE21水动力模型
数值模拟
感潮河段
宁海闸
水位流量关系
MIKE21 hydrodynamic model
numerical calculation
tidal reach
Ninghai sluice
water level-discharge relation
