Shotcrete construction technology is widely used in tunnel construction. Dry shotcrete and wet shotcrete are widely used in shotcrete construction in China. With the continuous development of construction technology, a new shotcrete construction technology, wet shotcrete, is gradually used in shotcrete construction.
In the shotcrete process, it has the advantages of high construction efficiency, less dust, low rebound rate, low consumption cost, and effectively makes up for the shortcomings of dry spraying and wet spraying, which not only ensures the safety of workers, but also improves the quality of shotcrete construction, greatly reduces the construction period of the project, and ensures the safety of tunnel construction.
The initial support of the tunnel adopts the wet shotcreting operation of concrete wet shotcreting machine. After the tunnel excavation is completed, 4cm concrete is sprayed to close the rock surface, then anchors are set up, steel frames are erected, and reinforcing mesh is paved and hung. After the initial shotcreting rock surface is cleaned, it is sprayed again to the design thickness.
Common concrete wet shotcreting machines include small wet shotcreting machines, hydraulic pumping wet shotcreting machines, rotary piston wet shotcreting machines, vehicle mounted wet shotcreting machines, wet shotcreting robots, etc. The wet shotcrete machine plays an important role in the construction process of tunnel engineering, providing initial support capacity for the whole tunnel engineering construction, providing basic guarantee for the construction quality of the whole tunnel engineering, improving the safety and quality of tunnel construction.
With the resumption of major projects all over the country and the continuous promotion of the strategy of "adding advice to the construction of railway, highway, subway and other engineering projects, there are countless tunnel construction projects involved. With the continuous development of tunnel construction technology, the national requirements for tunnel engineering quality, operation safety, occupational health and other aspects continue to improve, the demand for wet shotcrete machine is increasing, and the market prospect of concrete wet shotcrete machine will be more and more broad.
