长大隧道通风降尘技术研究

Research on Dust Reduction Technology for Ventilation in Long and Large Tunnels

目前,长大隧道施工已成为我国公路网建设过程中不可避免的问题,而施工通风系统设计作为保障安全、快速施工的关键技术成为长大隧道施工组织设计的一项极为重要的研究内容,综述讨论了国内外有关此方向的理论研究现状。同时以大万山隧道为背景,研究了长大隧道施工通风风量、风阻、风机功率等参数的计算,制定了通风降尘方案,通过实践验证了相关通风降尘技术的可行性,以期为长大隧道的施工通风技术提供新的技术思路和技术储备。

At present, the construction of grown-up tunnels has become an inevitable problem in the process of China’s highway network construction, and the design of construction ventilation system, as a key technology to ensure safe and rapid construction, has become an extremely important research content in the construction organization and design of grown-up tunnels. The review discusses the current status of theoretical research in this direction at home and abroad.Meanwhile, the calculation of construction ventilation air volume, wind resistance, fan power and other parameters of grown-up tunnels is studied in the context of Dawanshan tunnel, and a ventilation and dust reduction scheme is formulated. The feasibility of relevant ventilation and dust reduction technologies is verified through practice, with a view to providing new technical ideas and technical reserves for construction ventilation technology of grown-up tunnels.