Abstract:

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.