随着铁路建设的“跨越式”发展，长大隧道将越来越多，“长隧短打”的施工模式在较长时间内仍会延用，而因此带来的隧道排水问题将更加突出；如何充分利用水沟的排水能力，减少工程投资将尤为重要。根据乌鞘岭隧道建设特点，分析其排水系统的设计难点及其特殊性，给出辅助坑道排水系统与正洞排水系统的衔接设计、洞内水沟水量的平衡及洞外排水系统保温等工程处理措施，为类似工程提供借鉴。

Along with the greatstride development of railway construction, more and more long tunnels will be constructed. The construction method of "constructing long tunnels by dividing them into several short sections" will be used within a long time, and the drainage problems caused by this construction method will be much severer. Therefore, the full use of the capacity of the drainage ditches is very important so as to minimize construction cost. Based on the construction characteristics of Wushaoling tunnel, the author analyzes the design difficulties and particularity of the drainage system and provides the design of the connection between the service gallery drainage system and main tunnel drainage system, the water volume balance between the drainage ditches inside the tunnel and the heat insulation treatment of the drainage system outside the tunnel. This paper can provide reference for similar projects.