Constructing a generalized network design model to study air distribution in ventilation networks in subway with a single-track tunnel

Geodynamics and Stress State of the Earth's Interior 2017

Lugin, I.V.^1

Chinakal Institute of Mining, Siberian Branch, Russian Academy of Sciences, Novosibirsk, Russia^1

关键词: Air distribution;    Generalized networks;    Network methods;    Operating modes;    Single-track tunnel;    Station location;    Ventilation network;    Ventilation systems;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/134/1/012040/pdf
DOI  :  10.1088/1755-1315/134/1/012040

来源: IOP

【 摘 要 】

In focus are the features of construction of the generalized design model for the network method to study air distribution in ventilation system in subway with the single-track tunnel. The generalizations, assumptions and simplifications included in the model are specified. The air distribution is calculated with regard to the influence of topology and air resistances of the ventilation network sections. The author studies two variants of the subway line: half-open and closed with dead end on the both sides. It is found that the total air exchange at a subway station depends on the station location within the line. The operating mode of fans remains unaltered in this case. The article shows that elimination of air leakage in the station ventilation room allows an increase in the air flow rate by 7-8% at the same energy consumption by fans. The influence of the stop of a train in the tunnel on the air distribution is illustrated.