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研究如何设计进入避灾硐室的供风管道以及回风管道的参数,对于如何利用压风系统对避灾硐室进行供氧,而又能保证避灾硐室内人员的安全性具有重要的意义.研究首先根据避灾硐室所需风量确定了避灾硐室压风管道的管径;其次,通过对人体最大承受能力的分析,确定了避灾硐室内最大的超压;然后,利用流体力学相关理论分析了合适的排风管径;最后,通过计算避灾硐室内的绝对压力核对是否能保证人员的安全性.研究结果可为避灾硐室的设计提供依据.
Studying how to design the parameters of the supply duct and the return duct into the refuge chamber has important significance on how to use the pressure ventilation system to supply oxygen to the refuge chamber and to ensure the safety of personnel in the refuge chamber The study first determines the diameter of the air ducts of the air-evacuation chamber according to the required air volume of the emergency shelter chamber.Secondly, through the analysis of the maximum capacity of the human body, the maximum overpressure in the chamber is determined. Then, Mechanics-related theory to analyze the proper exhaust pipe diameter.Finally, whether the safety of personnel can be guaranteed can be verified by calculating the absolute pressure in the prevention chamber.The results of the study can provide the basis for the design of the prevention chamber.