一种公路隧道排烟系统及排烟角度的优化方法
By optimizing the angle between the smoke exhaust cross passage and the tunnel body in the highway tunnel smoke exhaust system to an acute angle, and by utilizing the fluid dynamics characteristics to increase the downstream air flow resistance and reduce the upstream smoke flow resistance, the problem of low smoke exhaust efficiency in the existing technology is solved, and the smoke exhaust efficiency and civil engineering economy are optimized.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- HUNAN PROVINCIAL COMM PLANNING SURVEY & DESIGN INST CO LTD
- Filing Date
- 2026-04-29
- Publication Date
- 2026-07-17
AI Technical Summary
In existing highway tunnel smoke exhaust systems, the smoke exhaust fan operates with low smoke capture efficiency and severe air short-circuiting due to the mismatch in resistance of the upstream and downstream fluid inflow paths, making it impossible to optimize the balance between smoke exhaust efficiency and civil engineering economy.
By optimizing the angle between the smoke exhaust cross passage and the tunnel body to an acute angle, and utilizing the fluid dynamics characteristics to increase the downstream air flow resistance and reduce the upstream smoke flow resistance, a comprehensive benefit objective function is constructed and iteratively solved to obtain the optimal design angle. This achieves a balance between smoke exhaust efficiency and construction cost, and solves the optimization problem of smoke exhaust efficiency and civil engineering economy.
It significantly improves the smoke capture rate and system disaster prevention reliability under fire conditions, reduces engineering costs, avoids safety hazards caused by excessive excavation or excessive compression, and achieves the best balance between smoke exhaust efficiency and construction costs.
Smart Images
Figure CN122106648B_ABST