1. safety hazard: after the cover plate of the drainage ditch in the tunnel is damaged, people and vehicles are easy to fall into the drainage ditch, causing casualties and vehicle damage.
2. Sewage leakage: After the drainage cover plate is damaged, sewage will easily leak into the tunnel, polluting the environment and affecting the health of personnel.
3. Flooding disaster: After the drain cover plate is damaged, rainwater easily penetrates into the tunnel, resulting in water accumulation in the tunnel, which increases the risk of tunnel flooding disaster.
4. Road damage: After the drainage cover plate is damaged, it is easy to damage the road when the vehicle is driving, which increases the road maintenance cost.
5. Increased maintenance cost: After the drainage cover plate is damaged, it needs to be replaced in time, which increases the maintenance cost and difficulty.
Therefore, in order to ensure the safety and normal operation of the tunnel, the damaged drainage cover plate must be repaired and replaced in time. At the same time, strengthen the inspection and maintenance of the tunnel, find and deal with hidden dangers in the tunnel in time, and ensure the safe operation of the tunnel.