As the main equipment for spraying anchor support operations, concrete wet spraying trolleys have been widely used in the construction of mine tunnels, railway and highway tunnels, water conservancy culverts, various underground projects, high-rise building foundation pits, military projects, etc. Compared with traditional dry spraying machine operations, the use of wet spraying trolleys brings significant advantages.

　　First of all, wet spraying trolley operations can significantly reduce the dust concentration at the construction site. During the operation of traditional dry spraying machines, dust will diffuse in large quantities beside the machine and outside the nozzle, seriously endangering the health of workers. The wet spraying trolley effectively reduces the generation of dust by adding water during the spraying process, thereby providing workers with a safer working environment.

　　More importantly, the wet spraying trolley operation significantly improves construction efficiency. The concrete rebound rate of the traditional dry spraying process is high, which usually causes material waste. The wet spraying trolley reduces the rebound rate of concrete to about 15%, greatly reducing material loss and improving construction efficiency. In addition, since the water-cement ratio in the wet spraying process is easy to control, the quality of shotcrete can be better guaranteed, improving the overall effect of the project.

　　The use of wet spraying trolleys not only improves construction efficiency and quality, but also reduces the labor intensity of workers. Due to the high degree of automation of equipment operation, workers only need to perform simple equipment operation and maintenance during the construction process, which greatly reduces the input of physical labor. At the same time, since the wet spraying process reduces material waste and dust control costs, the overall project cost is saved.

　　The application of concrete wet spraying trolleys in various engineering construction not only improves construction efficiency and quality, ensures the health of workers, but also effectively reduces construction costs. It has broad application prospects and significant economic benefits.