水力发电2025，Vol.51Issue(11)：83-88,6.
大型水电站分层取水口叠梁门动水开启水动力特性研究
Hydrodynamic Characterization of Dynamic Water Opening of Stacked Beam Gates at Layered Intake of Large Hydropower Station
摘要
Abstract
The water temperature of large reservoirs is characterized by an obvious layered distribution along the depth,and the low-temperature water flow discharged from power generation will affect the ecological environment of downstream river reaches,whereas the layered water intake method can selectively utilize water bodies of different layers in the reservoir to mitigate the negative impacts of power station discharge on downstream organisms and water environment.Based on computational fluid dynamics technology,the inlet flow state and the force on the stacked beam gate during dynamic water opening process are analyzed.The calculation results show that:(a)when the submerged water depth at the top of stacked beam gate is maintained at about 20 meters,the best layered water intake effect can be achieved;(b)during the lifting process of stacked beam gate,the water flow mainly passes through the middle of two stacked beam gates with the increase of gate block spacing,and the flow velocity is higher than that at the top of gate;(c)the vortices and backflows with different intensities may occur at the bottom of the front of stacked beam gate,the rear of stacked beam gate,and between the intake chamber and the linkage beams,which may cause hydraulic vibration in addition to causing additional hydraulic losses;(d)with the lifting of stacked beam gate,the required opening force gradually decreases;and(e)the opening force of stacked beam gates varies from orifice to orifice because the flow regimes are not identical.关键词
分层取水口/叠梁门/动水开启/水动力特性/启门力Key words
layered intake/stacked beam gate/dynamic water opening/hydrodynamic characteristics/opening force分类
水利科学引用本文复制引用
文勇波,朱珩,白治朋,李爽,肖惠民..大型水电站分层取水口叠梁门动水开启水动力特性研究[J].水力发电,2025,51(11):83-88,6.基金项目
中国长江电力股份有限公司科研项目(Z522302027) （Z522302027）
