Concrete sprayer operating procedures:
1. Spray mortar should use wet spray or wet spray, not dry spray.
2, before the initial spray, should be knocked to ask the top, clearing the living. Before the first spraying and the second spraying, the sprayed surface must be flushed with wind and water. When the surrounding rock is not suitable for seeing water, the dust from the sprayed surface can be blown with the compressed air.
3. Before the injection, the floating raft on the two bases of the roadway shall be cleaned and the design requirements shall be met.
4, before the injection should be in the vault, spandrel, arch base line every 10 meters set point pull line, and in the arch base line pull vertical line, strict pull double spray, to ensure spray thickness and flatness.
5. Before the injection, the equipment, tools, and other pipes and lines must be removed. If it cannot be removed, it must be covered and protected. After the injection is completed, the rebounds on equipment and other facilities must be promptly cleaned.
6. When the height of the roadway is more than 3 meters, set up a work bench or use a robot hand to spray.
7. When the spraying machine cannot be directly contacted with the spraying hand, it should be equipped with a special contact signal.
8, the sprayer should be equipped with two people, one gun, one person to assist and responsible for observing the roof and spray conditions, in order to ensure safety and injection quality.
9, before spraying, spray equipment and wind, water pipes, cables shall be subject to a comprehensive inspection and test run. If it is found that the friction plate is seriously worn, the compression screw rod fails, and the nozzle water is not normal. It is strictly prohibited to deal with the fault.
10. Persons engaged in spraying and feeding materials should wear dust masks, long-tube latex gloves, glasses or other labor protection products.
11, before the injection to do a good job of preparation for the recovery of rebound, after the spray to make full use of the rebound.
12. Before blowing the machine down, it is necessary to blow the material inside the machine. After shutting down, the spray equipment and its surroundings must be cleaned and the pipelines must be neatly arranged.
13. Before spraying, the middle and waist points must be covered with yellow mud or other materials, and they must be promptly exposed after spraying.
14. Shotcrete spraying concrete operation sequence: first open the air, then open the water, and finally send the point to feed; end sequence: first stop the material, after the materials in the tank are sprayed, in the power outage, and finally stop the wind.
15. For different types of jets, operate strictly according to their instructions.
16. When the material is fed into the jetting machine, the material shall be sieved and the feeding shall be continuous and uniform. When the machinery is in normal operation, sufficient stock must be kept in the hopper to ensure that the injection is even and continuous, and rebound is reduced.
17. The cement number used for shotcreting or shotcreting is generally not less than No. 425, and cement that has expired and damped and agglomerated must not be used.
18. A special unloading yard should be set up for the tidal spray face. The sand and stones added to the water must first be discharged to the stockyard and used only after 10 hours of infiltration.
19. Sewage shall not be used. Acidic water with a PH value of less than 4 shall not contain harmful impurities that affect the normal setting and hardening of cement.
1. Spray mortar should use wet spray or wet spray, not dry spray.
2, before the initial spray, should be knocked to ask the top, clearing the living. Before the first spraying and the second spraying, the sprayed surface must be flushed with wind and water. When the surrounding rock is not suitable for seeing water, the dust from the sprayed surface can be blown with the compressed air.
3. Before the injection, the floating raft on the two bases of the roadway shall be cleaned and the design requirements shall be met.
4, before the injection should be in the vault, spandrel, arch base line every 10 meters set point pull line, and in the arch base line pull vertical line, strict pull double spray, to ensure spray thickness and flatness.
5. Before the injection, the equipment, tools, and other pipes and lines must be removed. If it cannot be removed, it must be covered and protected. After the injection is completed, the rebounds on equipment and other facilities must be promptly cleaned.
6. When the height of the roadway is more than 3 meters, set up a work bench or use a robot hand to spray.
7. When the spraying machine cannot be directly contacted with the spraying hand, it should be equipped with a special contact signal.
8, the sprayer should be equipped with two people, one gun, one person to assist and responsible for observing the roof and spray conditions, in order to ensure safety and injection quality.
9, before spraying, spray equipment and wind, water pipes, cables shall be subject to a comprehensive inspection and test run. If it is found that the friction plate is seriously worn, the compression screw rod fails, and the nozzle water is not normal. It is strictly prohibited to deal with the fault.
10. Persons engaged in spraying and feeding materials should wear dust masks, long-tube latex gloves, glasses or other labor protection products.
11, before the injection to do a good job of preparation for the recovery of rebound, after the spray to make full use of the rebound.
12. Before blowing the machine down, it is necessary to blow the material inside the machine. After shutting down, the spray equipment and its surroundings must be cleaned and the pipelines must be neatly arranged.
13. Before spraying, the middle and waist points must be covered with yellow mud or other materials, and they must be promptly exposed after spraying.
14. Shotcrete spraying concrete operation sequence: first open the air, then open the water, and finally send the point to feed; end sequence: first stop the material, after the materials in the tank are sprayed, in the power outage, and finally stop the wind.
15. For different types of jets, operate strictly according to their instructions.
16. When the material is fed into the jetting machine, the material shall be sieved and the feeding shall be continuous and uniform. When the machinery is in normal operation, sufficient stock must be kept in the hopper to ensure that the injection is even and continuous, and rebound is reduced.
17. The cement number used for shotcreting or shotcreting is generally not less than No. 425, and cement that has expired and damped and agglomerated must not be used.
18. A special unloading yard should be set up for the tidal spray face. The sand and stones added to the water must first be discharged to the stockyard and used only after 10 hours of infiltration.
19. Sewage shall not be used. Acidic water with a PH value of less than 4 shall not contain harmful impurities that affect the normal setting and hardening of cement.
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