The water supply system
outside the tunnel is always frozen and the in-tunnel pipe network is always over-pressurized
during extra-long highway tunnel construction (10 to 20
km) in high attitude and cold areas. Thus, a case study is conducted on the
Tianshan Shengli tunnel of the Urumqi-Yuli expressway.
The normal high pressure water supply system outside the tunnel and the stable
high pressure water supply system in the tunnel cannot be effectively
implemented. Based on the difficulties in firefighting design of this tunnel, a
firefighting design scheme of setting high-level
reservoir in tunnel and sectional water supply of pipe network is proposed and
discussed in detail. The following conclusions or suggestions are given: (1)
The normal high pressure water supply system is beneficial for water supply of
extra-long tunnels in high attitude and cold areas. (2)
In-tunnel high-level reservoir
is recommended. (3) The number, setting distance, and setting attitude of the
high-level reservoir built in tunnel can be determined
according to the length and slope of the tunnel and related hydraulic
calculation results. (4) The normal high pressure water supply system with in-tunnel high-level reservoir successfully
addresses serious overpressure of pipe network. These demonstrate that the
normal high pressure water supply system with in-tunnel
highlevel reservoir is safe, reliable, economic, and
environmentally friendly.
LIAO Gaixia, WANG Enshi, MIN Quan
. Design of Firefighting and
Water Supply System With High-Level
Reservoir Built in Tianshan Shengli Tunnel[J]. Tunnel Construction, 2024
, 44(S1)
: 311
-316
.
DOI: 10.3973/j.issn.2096-4498.2024.S1.034
