无碴轨道底板作为无碴轨道下部基础的主要承载层，其施工质量要求很高，结合隧道作业空间狭小的特点，如何快速、优质完成底板的施工，便成为客运专线隧道施工中的一个重点。通过对大别山隧道无碴轨道底板施工的介绍，以此期望为其它客运专线隧道底板施工提供经验及借鉴。

As the major loadbearing layer of the understructure of the nonballast track, the floor slab of the nonballast track system has high requirements in construction quality. Due to the narrow working space inside the tunnels, the rapid and highquality construction of the floor slabs inside tunnels becomes one of the most important aspects in the construction of passengerdedicated railway tunnels. The construction of the floor slabs of the nonballast track system inside Dabieshan tunnel is presented in the paper, which can provide reference for the construction of the floor slabs in other passengerdedicated railway tunnels.