LIEr,ZENGXiang-ying,ZOUHui-jun,et al.Selection of Drop Shaft in Dadonghu Deep Drainage Tunnel in Wuhan Based on Numerical Simulation[J].China Water & Wastewater,2023,39(15):108-114.
Selection of Drop Shaft in Dadonghu Deep Drainage Tunnel in Wuhan Based on Numerical Simulation
China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU]
volume:
第39卷
Number:
第15期
Page:
108-114
Column:
Date of publication:
2023-08-01
- Keywords:
- Dadonghu Wastewater Deep Drainage Tunnel; drop shaft; type selection; numerical simulation
- Abstract:
- Drop shaft is one of the key components of deep drainage tunnel system. The selection of appropriate drop shaft type directly affects the design and operation of deep drainage tunnel system. This paper compared the performances of two types of drop shaft, namely vortex drop shaft and baffle drop shaft, and simulated the flow pattern, velocity and pressure in Erlangmiao drop shaft which has the largest treatment capacity in Dadonghu Wastewater Deep Drainage Tunnel Project in Wuhan by realizable k-ε model and SIMPLER algorithm. Under the design working conditions, the vortex drop shaft was superior to the baffle drop shaft in terms of gas-liquid separation, flow-stabilizing performance, shaft wall stress condition, and energy dissipation. Considering that the two types of drop shafts had little difference in investment, the vortex drop shaft was eventually selected for the project.
Last Update:
2023-08-01