Rail transport
engineering that is safe, reliable, and costeffective is a developing
trend in the rail transit system. In this study, key technologies in designing
the fire hydrant system of the NanjingMa′anshan intercity railway and its advantages over conventional
designs are introduced. Initially, through interpreting relevant codes and
analyzing engineering experience, a principle of "pump room protection
distance for fire hydrants within 2 000 m" and a fire water supply scheme
termed "multischeme water supply combination mode
in case of fire" are proposed. The specific contents include the
following: (1) Scheme I, where two adjacent stations are responsible for the
half sections ahead of and behind the stations, is prioritized. (2) For section
lengths less than 2 000 m, Scheme II can be adopted, wherein one station is
responsible for the entire singleline section between
two stations. (3) For sections more than 4 000 m, an independent fire pump room
should be established at the ventilation shaft based on Scheme I to ensure that
the protection distance of all fire pump rooms is within 2 000 m. (4) Each fire
pump room′s water supply units should be fully
segregated. Subsequently, two innovative firefighting
water supply schemes for singlewater source viaduct
stations are proposed: the outdoor lowvoltage and
indoor temporary highvoltage system for viaduct
stations adjacent to municipal roads and near cities with robust firefighting infrastructure; and the indoor and outdoor temporary highvoltage system for those in the middle of municipal roads and
distant from cities with inadequate firefighting
infrastructure. Lastly, a layout principle for fire infrastructures, such as
outdoor fire water tanks and hydrants for viaduct stations, is proposed. It is
recommended that for the outdoor lowvoltage and indoor
temporary highvoltage system, water tanks should be
positioned if the distance between the viaduct station and the tank exceeds 150
m; fire hydrants should be strategically placed at the entrances and exits of
viaduct stations.
ZHOU Jinzhong
,
ZHANG Meiqin
,
FAN Taixing
,
DU Jinhai
. Key Design Technology of Fire Hydrant System in Urban
Rail Transit[J]. Tunnel Construction, 2024
, 44(1)
: 139
-147
.
DOI: 10.3973/j.issn.2096-4498.2024.01.012
