1. Prepare construction materials.
2. Fill spray.
3. Double spray.
4. Check if the support quality is correct and clean the construction environment.
5. Shotcrete concrete
(1) Open air, adjust the water volume and air volume.
(2) Operate the nozzle and flush the surface from above.
(3) Power transmission.
(4) Adjust the air volume and water volume again according to the feeding conditions, to ensure that the shotcrete surface has no dry spot or no runny.
(5) Machine shocretes in order from the bottom to the top of the wall and the back arch.
(6) The nozzle should be sprayed as far as possible perpendicular to the shotcrete surface.
