With the increase of the national high-speed rail construction, high-speed rail in many places still have to pass through the mountain area. The wet mix shotcrete machine is used as the anchor spraying support equipment for the initial construction of the high-speed railway tunnel in the mountain area. The development of the national high-speed rail construction of the wet mix shotcrete machine plays a vital role. So what is the specific role of the wet mix shotcrete machine in the construction of high-speed railway tunnels in mountain areas?
As a professional equipment for anchor and shotcrete support, the wet mix shotcrete machine can quickly control or limit the slack deformation of the surrounding rock at the initial stage of the tunnel in the mountain area, and give full play to the bearing capacity of the surrounding rock, which is an important part of the "new Austrian law" construction. . The shotcrete anchor support of the wet shotcrete machine is implemented in the order of arch first and then side wall. The initial support includes system bolts, steel frames, steel mesh, and shotcrete. The initial support shall be applied immediately following the excavation surface to reduce the exposure time of the surrounding rock, suppress the displacement of the surrounding rock, and prevent the surrounding rock from loosening and exfoliating in a short period of time. When the wet shotcrete machine is in operation, the concrete is usually mixed outside the cave, the material is fed into the cave through the concrete conveyor, and the air is supplied by the air compressor. The combination of tidal spraying and wet spraying, the amount of one-shot spraying in the better surrounding rock area is not large, and the technology of tidal spraying concrete is adopted. Tide spraying has relatively low requirements on the quality and specifications of materials, and is easy to operate, but the dust is large, and the quality of concrete is lower than that of wet spraying. Surrounding rock fragmentation requires a large amount of spraying at once, large thickness, high quality of concrete, fast strength formation, and good supporting effect. Wet spraying concrete technology should be used. Both spraying methods are supplied by mixing outside the cave. The anchor rod is drilled by a trolley, and the medicine roll anchor rod is used. The medicine-roll anchor is easier to operate than the mortar anchor, and the quality of the anchor can be guaranteed, and the strength can be improved quickly, so that the anchor can be stressed in time to function. The wet mix shotcrete machine can perfectly complete the initial support task of the tunnel in the tunnel anchorage and shotcrete support construction of the mountainous area with the cooperation of the drilling rig to ensure the smooth progress of the tunnel's later construction work.
As one of the earliest shotcrete machine suppliers, China Coal Group has repeatedly verified and verified the problems encountered during the construction of wet mix shotcrete machine. We have the ability to solve all your construction problems in the construction process. Customers are welcome to come Our factory conducts technical exchanges.
