为解决10 km甚至20 km以上的高寒高海拔超长公路隧道消防供水系统设计中洞外设置供水系统被冻结、洞内管网严重超压等难题，通过对乌尉高速天山胜利隧道消防设计的难点，以及常规的隧道外常高压供水系统及稳高压供水系统在该隧道中难以实施等问题展开深入研究，提出天山胜利隧道内设置高位消防水池及将隧道内消防管网进行分区供水的设计方案并详细论述。对于10 km甚至20 km以上的高寒高海拔超长公路隧道消防供水系统的设计： 1）隧道消防给水宜采用高位消防水池供水的常高压供水系统； 2）常规的隧道外常高压供水系统及稳高压供水系统在高寒高海拔超长公路隧道中无法实施，可考虑隧道内置高位消防水池的设计； 3）隧道内置高位消防水池的数量、设置间距、设置高度等应根据隧道的长度、纵坡等综合考虑并进行水力计算后确定； 4）隧道内置高位消防水池的常高压供水系统能解决这类隧道消防供水系统设计中管网严重超压的难题，具有供水安全可靠、施工难度较小、经济、环保等优点。

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 highlevel reservoir is safe, reliable, economic, and environmentally friendly.