1. The liquid injection gun on the working surface is inspected by the column beam member every time, and the problem is detected in time. 2. The working surface is kept at a distance of 10 meters every 10 meters, and the gun tube is 10 meters and a liquid injection gun. Each place in the mining surface can be used in overlapping, and the upper and lower lanes are within 20 meters. A gun to support the advance support and maintain the alley. 3, the work surface should be stored in the toolbox a certain number of spare liquid injection guns, nozzles, "O" seals and other spare parts. 4, when the strut, strict implementation of the procedure after the first injection of the impulse valve nozzle to prevent the pulverized coal into the pillar, firmly injection in the injection, and the injection delay of 5 seconds. 5, do not allow littering to put liquid guns, after using the gun, the gun should be hung on the supervisor or hung on the pillar handle, it is strictly prohibited to drop the injection gun. 6. When a bad gun, bad tube or bad sealing ring is found, it is necessary to immediately stop the pressure change, close the valve or stop the pump, restore the pressure supply as soon as possible, and transport the bad parts in time. 7. When changing the gun, changing the hydraulic pipe, sealing ring, etc., the personnel suspend other work and hide to a safe place, especially the unloading of the column. Servo hydraulic injection machine Micro Servo Motor Injection Moulding Machine,Customized Injection Plastic Mold,90 Ton Injection Molding Machine,Small Plastic Injection Turn Machine (Zhejiang) Co., Ltd , https://www.plasticblowing.com