Reactor Shotcrete Operation Procedure

How to operate? What is the shotcrete operation process? Henan Haoli sprayer manufacturers introduced in detail the injection operations of the HaoLi sprayer, the operation procedures of the sprayed concrete, and how to stop the operation. He hoped to help the safe operation of the spray gun.
1. Sprayer preparation work 1 Check whether the installation of bolts meets the design requirements and find problems in time.
2 Clean up debris from the blast site, and install the PZ-5 concrete shotcreting machine in a stable and safe place on the top wall surrounding the rock. The distance from the track can not be less than 0.5m. Connect the wind and water pipelines. The feeding pipeline shall be straight and shall not have sharp bends. The joints shall be tight and no leakage of air shall be allowed. It is forbidden to use non-static antistatic plastic tubes as conveying tubes.
3 Check whether the spraying machine is in good condition, and put the electricity into no-load test run, fasten the friction plate tightly, and no air leakage phenomenon shall occur.
4 Before blasting, the rock face must be washed with high-pressure feng shui. Thickness marks should be placed on the vault and the two gangs of the roadway.
5 Spraying personnel should wear complete and effective labor insurance products.
2. Shotcrete spraying concrete operation process Before the spraying work begins, the old belt should be laid on the spraying site so as to collect the rebound material. The rebound rate should not exceed 10%.
1 open water, open air, adjust the amount of water, keep the wind pressure not less than 0.4MPa, the water pressure should be about 0.1MPa higher than the wind pressure, the amount of water is controlled by the shooter's experience, water-cement ratio 0.4.
2 The sprayer operates the sprinkler and flushes the rock face from top to bottom.
The 3PZ-5 type concrete shotcreting machine was used to deliver electricity, and a shotcreting machine was used to spray the slurry.
4 According to the feeding situation, adjust the amount of feng shui again to ensure that there is no dry spot on the spray surface, no runny, strong adhesion and less rebound material.
5 The sprayer sprays in sections in the order from the bottom to the top wall.
6 The sprayer should be sprayed as far as possible perpendicular to the spray surface. The included angle should not be less than 70 degrees.
7 When spraying, the trajectory of the nozzle should be spiral, according to the diameter of 200-300mm, a circle presses the semi-circular method to move evenly and slowly.
8 The concrete shotcreting machine sprays concrete at a thickness of 50-70mm, and must be re-injected in time. The interval between sprayings shall not exceed 2 hours. Otherwise, use high pressure water to re-flush the sprayed surface.
9 should be equipped with two people, one person holding a spray nozzle, one person assisted lighting and responsible for contact, observe the top of the security and jet quality.
3. Stopping operation of the spraying machine 1 After the spraying is finished, the operation shall be performed in the order of stopping the material, stopping the water, and then stopping the power and then finally closing the wind.
2 After the spraying work is completed, remove the spray head, clean the water ring and the mortar or material inside and outside the sprayer, and wind up the wind water pipe.
3 Clean up and collect the rebound materials, and use clean materials in the shift.
4 Sprinkling concrete began to sprinkle after 2 hours of curing, and core strength was measured after 28 days.

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