SCIENTIFIC AND METHODICAL DESIGN FRAMEWORK FOR SEPARATE VENTILATION SYSTEMS FOR CLOSED-TYPE STATIONS AND DOUBLE-TRACK SUBWAY TUNNELS
The article reviews briefly the current trends in construction of subways in Russia, which are mostly building of closed-type stations and double-track tunnels. The problem of development and design of ventilation systems for the closed-type stations and double-track tunnels under conditions of the subarctic climate is specified. For the closed-type subway station with the double-track tunnel, the relations between the train heat buildup along the platform–tunnel section and the length of the double-track tunnel are determined. For the conditions of subways in Novosibirsk, Moscow and Baku, the relations between the seasonal heat flows from the station halls to soil and the thermal conductivity coefficient of soil are found. Furthermore, the heat exchange between the passenger platform and the double-track tunnel through a baffle is related with the two-train movement as well as with the air temperatures at the platform and in the tunnel. Total heat emission at the station is determined as function of the station occurrence depth and season. The heat exchange versus occurrence depth of the closed-type station is estimated. Permissible range of air recirculation (%) in the total air exchange is calculated subject to the occurrence depth of the station. The separate ventilation scheme is presented, as well as the modes and equipment requirements for the separate ventilation system are substantiated.
: Kiyanitsa L. A.
Kiyanitsa L.A., Graduate Student, Engineer, е-mail: email@example.com,
Chinakal Institute of Mining of Siberian Branch of Russian Academy of Sciences,
630091, Novosibirsk, Russia.Key words
Subway, closed-type station, excess heat, air exchange, recirculation, separate ventilation system, ventilation mode.References
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