Zijing Tunnel Project – Sichuan Road & Bridge Group

Application of Shotcrete Spraying Machine in Tunnel and Underground Engineering

Project Background

In the Sichuan Road & Bridge Zijing Tunnel Entrance Project, to ensure construction safety and efficiency, Aivyter Shotcrete Spraying Machines (AWT20 and AWT3016F) along with intelligent air compressors were utilized. The application of Shotcrete Spraying Machines in this project highlights their remarkable advantages and energy-saving effects in tunnel engineering and underground construction.

Functions and Advantages of Shotcrete Spraying Machine

Functions of Shotcrete Spraying Machine

Shotcrete Spraying Machine is a device used for concrete spraying operations in tunnels, mines, subways, and other underground projects. It works by pumping well-mixed wet concrete (a mixture containing water) to the nozzle, and then spraying it onto the working surface or support surface under high-pressure air, forming a uniform concrete layer.

Main Functions and Benefits:

1. Concrete Support and Reinforcement:

• Applied in tunnel support, mine tunnel support, subway construction support, and culvert reinforcement.

• The concrete layer formed by the wet spraying process effectively prevents rock collapse and improves project safety.

2. Reduction of Dust Pollution:

• Compared with traditional dry spraying methods, the wet spraying process significantly reduces dust pollution during construction, protecting workers’ health and meeting environmental protection requirements.

3. Improved Construction Quality and Efficiency:

• The wet spraying process provides better bonding and uniformity of concrete, with a low rebound rate (generally less than 15%), significantly saving materials.

• Automated Shotcrete Spraying Machines offer high construction efficiency, especially suitable for large-scale continuous spraying operations and long-distance tunnel spraying.

4. Energy Saving and Environmental Protection:

• By integrating high-efficiency Shotcrete Spraying Machines with intelligent air compressors, lower energy consumption and higher concrete utilization rates are achieved.

• Complies with the "2024–2025 Energy Conservation and Carbon Reduction Action Plan" regarding energy-saving and environmental protection requirements.

5. Adaptability to Complex Environments:

• With excellent mobility and flexibility, it is suitable for narrow spaces, complex geological conditions, and diverse engineering requirements.

Contact Us

If you are looking for a high-efficiency, eco-friendly, and energy-saving Shotcrete Spraying Machine solution, feel free to contact us. Our Aivyter Shotcrete Spraying Machines (AWT20 and AWT3016F) are specifically designed for tunnel and underground engineering, enhancing construction efficiency while reducing energy consumption.