Abstract: Aiming at the fact that treatment of tunnel collapse usually delays the construction period seriously and increases the construction cost, the construction technology of T76S self-drilling and grouting spiral pipe-roof is introduced in tunnel collapse treatment and an evaluation is conducted regarding the construction process, key technical points and support effect based on the collapse treatment of certain tunnel on Shantou-Zhanjiang expressway.The application effects show that the force borne by initial support is reasonable, the structure is safe and the support effect is good after treatment of the tunnel collapse.