In tunnel engineering construction, excavation technology is one of the core technologies of tunnel construction, and concrete spraying in the initial support of tunnels is one of the key processes of tunnel construction. With the further acceleration of the pace of infrastructure construction in my country, the application of wet spraying technology in large-scale engineering construction has become more and more extensive.

　　Advantages of wet spraying technology

　　The wet spraying process replaces the traditional dry spraying process, bringing many significant advantages. First, the wet spraying process reduces the generation of dust during construction by pre-mixing water and concrete before spraying, greatly improving the working environment of tunnel construction workers. This not only helps to protect the health of construction workers, but also reduces pollution to the surrounding environment.

　　Secondly, the application of wet spraying technology significantly reduces labor intensity. The traditional dry spraying process requires workers to operate manually, which is labor-intensive, while the wet spraying process relies on automated equipment, such as concrete wet spraying trolleys. This equipment not only reduces the workload directly involved by workers, but also improves the accuracy and efficiency of construction.

　　Improving construction efficiency and saving costs

　　The introduction and popularization of wet spraying technology has greatly improved the efficiency of tunnel construction. Due to the better adhesion and fluidity of wet spraying concrete, it can be more evenly and firmly attached to the tunnel wall during the spraying process, thereby improving the quality and stability of the support. In addition, the wet spraying process simplifies the construction process and speeds up the construction progress, thereby shortening the project period.

　　In terms of cost, the wet spraying process also shows significant advantages. The traditional dry spraying process not only requires a lot of manual operation, but also often leads to material waste and equipment loss due to dust problems. The mechanization and automation of the wet spraying process not only reduces material waste and equipment wear, but also reduces labor costs, saving construction costs overall.

　　Promote the mechanization process of tunnel construction

　　The emergence of concrete wet spraying trolleys is an important symbol of tunnel construction mechanization. With the development of science and technology, the design and function of wet spraying trolleys have been continuously optimized, making tunnel construction more efficient and safe. These devices are equipped with advanced spraying systems and control systems, which can achieve high-precision operations and further improve construction quality and efficiency.

　　The application of wet spraying technology has played an important role in tunnel engineering construction. It not only improves the construction environment, reduces labor intensity, and improves work efficiency, but also saves construction costs and promotes the mechanization process of tunnel construction. With the continuous advancement of my country's infrastructure construction, wet spraying technology will continue to play a key role in future tunnel projects and contribute more to my country's infrastructure construction.