Operating method of injection group

[0021] a. Prepare the mortar

[0022] The mortar should meet the construction requirements, and ordinary portland cement can be used, or slag portland cement or pozzolanic portland cement can be selected, mixed with medium and fine sand, or purchased mortar can be directly selected;

[0023] b. Clean the base surface

[0024] Rinse the surface to be sprayed with high-pressure wind water to remove dust, dirt, etc. from the base surface, and make the base surface to be sprayed fully wet;

[0025] c. Connect the air compressor with the wet jet machine, and adjust the air compressor so that the compressed air flow rate of the compressed air output is 9 to 12m 3 / min, the pressure is 0.2 ~ 0.5Mpa, start the wet spraying machine, put the prepared mortar into the spraying machine and spray it from bottom to top to the base surface, the spraying thickness should meet the requirements, generally 15 ~ 20mm;

[0026] d. After the mortar surface layer is formed, its surface should be tr...

[0028] Others are the same as in embodiment 1, except that an additive wave splitter is connected to the nozzle of the wet jet machine, and the additive wave splitter is also connected to the air compressor. The quick-setting agent, fireproofing agent, and waterproofing agent can be evenly mixed into the mortar, and then sprayed onto the base surface.

[0030] Others are as in embodiment 1 or 2, except that reference rods are set on the base surface before spraying, and the distance between the reference rods is not more than 2m, so as to understand the thickness of the mortar sprayed and ensure that the mortar surface is smooth and uniform in thickness.