🔹 How it works in tunnels:
Concrete preparation – premixed concrete is fed into the wet shotcrete pump.
Pumping – the machine pumps the mixture through pipelines to the spray nozzle.
Spraying – compressed air atomizes the mixture at the nozzle, creating a high-velocity spray.
Bonding & support – the sprayed concrete adheres to the rock/tunnel surface, forming a dense, strong support layer.
🔹 Advantages for tunnel construction:
High spraying efficiency (up to 40–50 m³/h).
Low rebound rate compared to dry shotcrete (saves material).
Good dust control, improving tunnel air quality.
Forms immediate rock support to prevent collapse.
Can be combined with robotic arms for precise spraying in large tunnels.
👉 Do you want us to make a visual diagram showing how a wet shotcrete machine sprays inside a tunnel, or just a technical description comparing manual vs. robotic spraying?
