狭长排污隧洞冬季自然通风的研究

Natural Ventilation in the Long and Narrow Sewer Tunnel in Winter

阐述了山岭排污隧洞外界自然风引起洞内空气流动的原因,以及隧洞内空气流动能量守恒理论,并建立了空气流动的数学模型。以某山岭排污隧洞为理论分析实例,结合空气流动能量守恒定律和质量守恒定律,研究了竖井在隧洞自然通风中的作用,对比分析了冬季无竖井隧洞和有竖井隧洞自然通风的效果,以及风压与热压的关系,并论证了利用自然风稀释排污隧洞内有害气体(H2S)浓度的理论可行性。

By establishing the mathematical modal of air flow, this paper introduces air dynamic theory and energy conservation principle of natural ventilation in the long and narrow sewer ttmnel in winter, With a sample of a sewage tunnel, the importance of the shaft, and the relationship of wind and stack pressure were discussed by comparing it with the tunnel without shaft. The computational result demonstrates the feasibility of natural ventilation to control H2S concentration in the sewage tunnel.