摘要
充水过程是长距离输水隧洞调度运行的典型工况之一,往往水力过渡过程比较复杂,难以手工计算。针对引汉济渭工程初期运行安全调度的现实需求,对首次充水的水力过渡过程采用数值方法进行研究。建立了输水隧洞调度模型,采用虚拟流量法分别对加大供水区和保证供水区两种工况进行了数值模拟计算,分析了不同供水流量的首次充水特性。结果表明,首次充水供水流量分别为70 m^(3)/s和18 m^(3)/s时越岭段首端(桩号0+000)、1/4里程(桩号20+450)、中点(桩号40+900)、3/4里程(桩号61+350)流量和水深都平稳增大,沿程不会出现明满流或隧洞脱空等不利现象。
The water filling process is one of the typical operation conditions of long-distance water transfer tunnel. In view of the realistic demand of safety dispatching in the initial operation of Hanjiang-to-Weihe River Diversion Project, the hydraulic transition process of the first water filling was studied and the dispatching model of water conveyance tunnel was established. The virtual flow method was used to solve the problem, and the numerical simulation was carried out for two working conditions of increasing water supply area and ensuring water supply area, and the first filling characteristics of different water supply flow were analyzed. The results show that when the water supply flow of the first filling is 70 m^(3)/s and 18 m^(3)/s respectively, the first end(pile No. 0+000), 1/4 mile(pile No. 20+450), midpoint(pile No. 40+900), 3/4 mile(pile No. 61+350) and Huangchigou flow and water depth increase steadily. There will be no bright full flow or tunnel empty and other adverse phenomena.
作者
王竞敏
李甲振
党康宁
王沛芝
罗畅
白钰
李佳宁
白瑀
WANG Jingmin;LI Jiazhen;DANG Kangning;WANG Peizhi;LUO Chang;BAI Yu;LI Jianing;BAI Yu(Hanjiang-to-Weihe River Valley Water Diversion Project Construction Co.,Ltd.,Shaanxi Province,Xi’an 710024,China;China Institute of Water Resources and Hydropower Research,Beijing 100038,China)
出处
《人民黄河》
CAS
北大核心
2022年第3期128-132,共5页
Yellow River
基金
陕西省水利科技计划项目(2017slkj-27)。
关键词
隧洞充水过程
无压隧洞
虚拟流量
水力特性
引汉济渭工程
water filling process of tunnel
non⁃pressure tunnel
virtual flow rate
hydraulic characteristics
Hanjiang⁃to⁃Weihe River Valley Water Diversion Project
