Accident analysis of roof bolter in Cuncaota No2 Mine
Publish: 2021-04-07 12:47:20
1. The main risk factor is personal injury caused by improper operation
it is suggested that the operator should master the performance, principle and operation method of the drilling rig
1. Before drilling, check whether all parts of the drilling rig are in good condition, whether the operating handles are flexible, whether the lubricating oil is sufficient, and whether the air and water pipes are firmly connected
2. When drilling, hold the handle tightly with both hands, stand upright and steady with two feet apart, pay attention to drilling and nearby conditions at any time, and stop drilling first and deal with it later in case of any abnormality
3. When drilling, air should be supplied slowly. After drilling 50 mm, the air supply should be increased graally
4. In the drilling process, the thrust of the air leg should not be too large or too strong. It is necessary to jack up slowly and start the drilling rig slowly, so as to avoid the accidents of sticking the drill and injuring people by the operating handle
5. When drilling a deviated eye, it is not only necessary to use the thrust of the air leg to stabilize the drilling rig. Two people must hold the drilling rig to avoid the accident of breaking the rod and injuring people
6. No one is allowed to stand within the radius of the handle ring drilling
7. Always check the verticality of the drill pipe and the integrity of the joint.
it is suggested that the operator should master the performance, principle and operation method of the drilling rig
1. Before drilling, check whether all parts of the drilling rig are in good condition, whether the operating handles are flexible, whether the lubricating oil is sufficient, and whether the air and water pipes are firmly connected
2. When drilling, hold the handle tightly with both hands, stand upright and steady with two feet apart, pay attention to drilling and nearby conditions at any time, and stop drilling first and deal with it later in case of any abnormality
3. When drilling, air should be supplied slowly. After drilling 50 mm, the air supply should be increased graally
4. In the drilling process, the thrust of the air leg should not be too large or too strong. It is necessary to jack up slowly and start the drilling rig slowly, so as to avoid the accidents of sticking the drill and injuring people by the operating handle
5. When drilling a deviated eye, it is not only necessary to use the thrust of the air leg to stabilize the drilling rig. Two people must hold the drilling rig to avoid the accident of breaking the rod and injuring people
6. No one is allowed to stand within the radius of the handle ring drilling
7. Always check the verticality of the drill pipe and the integrity of the joint.
2. First of all, you have to go to the provincial training center to participate in the training and ecation of mine manager qualification certificate and mine manager safety qualification certificate, and pass the examination to get the mine manager qualification certificate and mine manager safety qualification certificate; Secondly, you should have a strong professional knowledge level and management ability of the instry. After the examination of the employer, you think that you have the ability to work as a mine manager
first of all, you should go to the provincial training center to participate in the training and ecation of the mine manager qualification certificate and the mine manager safety qualification certificate, and pass the examination to get the mine manager qualification certificate and the mine manager safety qualification certificate, It is the most basic condition to be a mine manager; Secondly, it is necessary to have a strong level of business knowledge and management ability in the instry. After the examination of the employing unit, it is considered that you have the ability to serve as a mining manager
first of all, you should go to the provincial training center to participate in the training and ecation of the mine manager qualification certificate and the mine manager safety qualification certificate, and pass the examination to get the mine manager qualification certificate and the mine manager safety qualification certificate, It is the most basic condition to be a mine manager; Secondly, it is necessary to have a strong level of business knowledge and management ability in the instry. After the examination of the employing unit, it is considered that you have the ability to serve as a mining manager
3. I don't know what kind of machine you have, but the hydraulic press is almost the same. Maybe the valve is broken
4.
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there are too many impurities in the oil, the oil filter should be replaced regularly
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the quality of the valve is not good, the clearance is not good, if it is a domestic valve, the quality is basically inferior
these two possibilities are relatively large, it is recommended to clean the oil first and then
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5. These well-known brands, such as sharp's new procts in the most appropriate gift, PR, however, such as sharp, car air purifier. Compared with other brands of car air purifier, sharp is indeed a leading edge
advantages of China: 1. Generous and decent appearance. All black cup design, from the usual box car air purifier is different, beautiful high-end again. 2. Appearance design, suitable for cup holder in car, high safety performance. Unlike other brands of on-board air purifiers, sharp's easy to put on the car, even if the environment is not less driving. 3. The cleaning effect is guaranteed. The unique ion air purifier is approved by the purification technology department. Car odor, bacteria and virus light sweep. The online assessment is consistent with what I said now.
advantages of China: 1. Generous and decent appearance. All black cup design, from the usual box car air purifier is different, beautiful high-end again. 2. Appearance design, suitable for cup holder in car, high safety performance. Unlike other brands of on-board air purifiers, sharp's easy to put on the car, even if the environment is not less driving. 3. The cleaning effect is guaranteed. The unique ion air purifier is approved by the purification technology department. Car odor, bacteria and virus light sweep. The online assessment is consistent with what I said now.
6. These three mines are all of the same category, and their wages and benefits are almost the same, but what I'm talking about is the total amount of wages given by the company. As for the amount of secondary distribution, it's almost the same, but the range is not big, but the transportation is better. I hope it can help you
7. I haven't repaired the side machine. I can't help you. Take a look at the working principle. The water seal is broken. Check it more
8. The gap is not very big when the bolt machine is drilled to a certain depth, so it is difficult to pull out the drill rod when it exits, and it needs to be idled to clean up the powder inside.
9. There are mainly hydraulic and pneumatic drilling rigs for drilling anchor holes on rocks, and a small number of electric drilling rigs
10. How to calculate the length of service after graation
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