In the field of modern tunnel construction and underground engineering, hydraulic wet spraying trolleys, as an innovative technology, are gradually replacing traditional dry spraying processes, bringing significant benefits and environmental advantages to the industry. Its core advantage is to significantly reduce the dust concentration in the working environment, reduce the rebound rate, and improve the quality of sprayed concrete, thereby providing strong protection for the health of construction workers and engineering efficiency.

　　1. Dust control, protect the health of workers

　　In the traditional dry spraying process, high concentrations of dust not only seriously deteriorate the working environment, but also pose a potential threat to the respiratory system of construction workers. In contrast, the hydraulic wet spraying trolley greatly reduces the dust generation during the spraying process by pre-mixing concrete with water, effectively improving the working environment and ensuring the health and safety of workers.

　　2. Reduce rebound rate and improve material utilization

　　In the dry spraying process, the high rebound of concrete often leads to serious material waste. The hydraulic wet spraying trolley can significantly reduce the rebound rate of concrete by accurately controlling the water-cement ratio. According to measured data, the rebound rate can be reduced from 15%-50% to below 10%, which greatly improves the utilization rate of materials and reduces costs.

　　3. Improve concrete quality and ensure project quality

　　The advantages of wet spraying technology are also reflected in the improvement of concrete quality. By accurately controlling the water-cement ratio, the hydraulic wet spraying trolley ensures the uniformity and stability of concrete, avoids the poor hardening phenomenon caused by uneven moisture, thereby greatly improving the quality of sprayed concrete and providing a solid guarantee for the durability and safety of the project.

　　The wide application of hydraulic wet spraying trolleys marks a technological innovation in the field of tunnel construction and underground engineering. It not only effectively improves the working environment and ensures the health of construction workers, but also makes important contributions to the economic benefits and sustainable development of engineering projects by improving material utilization and concrete quality.