As an important equipment for mechanized tunnel construction, wet spraying trolleys have significant technical advantages and a wide range of application scenarios. The following is a comprehensive summary:
I. Core advantages and features
1. Efficient construction capability
① The spraying speed reaches 30-40m³/hour, which is more than 5 times the efficiency of traditional dry spraying equipment, shortening the construction period and reducing labor costs.
② The dual power system design can adapt to emergency cleaning needs and reduce downtime.
2. Improved construction quality
① The wet spraying process makes the concrete more adherent, more uniform and dense, and the spraying layer has stable strength.
② The rebound rate is less than 15% (some equipment can be controlled at 5%-12%), reducing material waste.
3. Intelligence and flexibility
① The multi-degree-of-freedom boom supports rotation, pitch, and telescopic operation, and the wireless remote control operation covers a large range of working surfaces and reduces blind spots.
② The intelligent proportioning system of the quick-setting agent automatically matches the concrete output to ensure the setting effect.
4. Environmental protection and safety
① The dust concentration is reduced by more than 90%, which improves the working environment of workers and reduces the risk of occupational diseases.
② Remote operation is far away from the face, reducing the risk of collapse, and equipped with real-time monitoring function.
5. Equipment durability and adaptability
① The engineering chassis and four-wheel drive design are adopted to adapt to complex terrain.
② High-strength steel pipe material and anti-blocking technology extend the service life and have a low failure rate.
II. Main application areas
1. Tunnel engineering
Initial support of railway, highway and subway tunnels to enhance the stability of surrounding rocks.
2. Water conservancy and hydropower
Concrete reinforcement of culverts, dam slopes, underground workshops, etc.
3. Mining development
Tunnel support and mining face spraying to adapt to complex underground working conditions.
4. Municipal and construction
Construction foundation pit support, urban underground projects (such as subway stations).
5. Military and special projects
Rapid support needs for military facilities, emergency projects, etc.
At present, the wet spraying trolley is developing towards higher intelligence (such as GPS positioning, fault diagnosis) and integration (such as pumping anti-blocking, wind path remote control). In the future, it will further enhance the adaptability of large-section tunnels and complex geology, and promote the mechanization of the entire tunnel construction process.