Tunnel engineering is known as one of the most dangerous jobs, encountering many hazards, such as 1. water and mud gushing, extremely poor geology, and areas with abundant groundwater; 2. Collapse, untimely support, and unreliable support; 3 object strikes, excavation blasting, waterproofing, and secondary lining construction; 4. Falling from height, steel reinforcement and secondary lining trolley operation; 5. Electric shock, high and low power supply lines in the tunnel, distribution box; 6. Mechanical injury, tunnel construction equipment such as excavators and loaders; 7. Vehicles driving, slag trucks and tank trucks driving in the tunnel.
These are common hazards in tunnel engineering.

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