摘要
国家技术标准规定地铁采用自然补风时的总阻力大小,但并未给出补风阻力计算方法;同时标准还规定地铁站台排烟量大小需保证站台楼梯、扶梯口处具有不小于1.5 m/s下行风速,但未给出楼梯、扶梯口风速计算方法。文章基于矿井通风相关理论,提出一种可用于深埋地铁站自然补风通路阻力计算方法,该方法还可计算保证站台楼梯、扶梯口处具有不小于1.5 m/s下行风速时站台排烟量大小。以某深埋地铁站为例,采用文章提出的计算方法,并运用MATLAB软件编程计算站台排烟量大小和补风通路总阻力,为此类工程通风排烟系统的设计提供参考。
The national technical standard stipulates the total resistance of natural compensation in deep buried metro stations when natural compensation is used,but the calculation method is not given.At the same time,the standard also stipulates that the amount of smoke exhaust from the metro platform needs to ensure that the stairs and escalators at the platform have a downward wind speed of not less than 1.5 m/s but does not give a calculation method for the wind speed of the stairs and escalators.A calculation method that can be used for the resistance of natural compensation in deep buried metro stations based on the related theory of mine ventilation is proposed in this paper.At the same time,this method can also be used to calculate the smoke emission of the platform when the downward wind speed is not less than 1.5 m/s at the platform stairs and escalator entrances.Finally,taking a deep buried metro station as an example,the calculation method proposed in this paper was used,and the MATLAB is employed to calculate the smoke exhaust volume and the total resistance of natural compensation,which can provide reference for the design of ventilation and smoke exhaust systems in such projects.
出处
《现代城市轨道交通》
2022年第6期89-93,共5页
Modern Urban Transit
基金
湖南省自然科学基金项目(2020JJ7037)
长沙市雨花区科技计划项目(YHKJ-2020-CZ-17)。
关键词
城市轨道交通
深埋地铁站
自然补风
通风阻力
排烟量
urban rail transit
deep buried metro station
natural compensation
ventilation resistance
smoke exhaust volume
