摘要
西藏旁多灌溉输水洞为无压隧洞,全长16771.5m,设计纵坡1‰,属长洞,输水隧洞采用钻爆和TBM两种施工方法,然而实际施工断面与设计断面存在一定偏差。本文采用MIKE 11水动力模型对灌溉输水洞过流条件进行复核,结果表明,设计情况及各潜在不利情况下的过流条件均满足隧洞无压流设计要求,模型具有良好的适用性,计算速度快。本文采用的计算方法和计算结果可为类似工程提供一定的参考。
The Pangduo irrigation water conveyance tunnel in Xizang is a non-pressure tunnel with a total length of 16771.5m and a design longitudinal slope of 1‰,it is a long tunnel.The water conveyance tunnel adopts two construction methods,drilling and blasting and TBM.There is a certain deviation between the actual construction section and the design section.This article uses the MIKE 11 hydrodynamic model to review the overflow conditions of irrigation water conveyance tunnels.The results show that the design and potential adverse conditions of the overflow conditions meet the requirements of non-pressure flow design in tunnels,and the model has good applicability and fast calculation speed.The calculation method and results used in this article can provide some reference for similar projects.
作者
郝永飞
郑春阳
Hao Yongfei;Zheng Chunyang(China Water Northeastern Investigation,Design and Research Co.,Ltd.,Changchun130021,China;Institute of Water Conservancy Science and Technology of Jilin Province,Changchun130022,China)
出处
《吉林水利》
2024年第11期45-49,共5页
Jilin Water Resources
关键词
无压隧洞
水动力模型
过流条件
Free flow tunnel
Hydrodynamic model
Flow condition
