What are the precautions when drilling underground in coal mines?

1) Eat and rest well before entering the well, and do not drink alcohol;

2) It is strictly forbidden to wear chemical fiber clothes and carry cigarettes and ignition items into the mine;

3) Before entering the well, you should wear a miner's lamp, wear a safety helmet, and carry a self-rescuer.

4) When carrying sharp tools, put on a good sheath to prevent injury;

5) Attend the pre-class meeting on time;

6) Consciously abide by the well inspection system, obey the command, line up to enter the well, and accept the inspection.

<> "Hello friends, the following preparations should be made before the opening of downhole drilling: 1Determine the location and depth of the borehole, determine the location and depth of the hole to be drilled, including the coordinates of the transverse and longitudinal direction and the dip angle.

2.Clean up the underground environment and ensure that the underground environment is clean and tidy, so as to avoid the harm caused to the equipment by garbage, oil stains and other substances. 3.

Carry out safety inspections to ensure that drilling equipment and facilities are in compliance with safety regulations, have good reliability, and do not have hazards such as short circuits and leakage. 4.Prepare the necessary materials and equipment, such as drill bits, drill pipes, hydraulic oil, driving equipment, etc.

5.Ensure that the staff is familiar with the working principle and operating procedures of the drilling equipment, and the operation methods and processes are strictly implemented in accordance with the work instructions. 6.

Prepare an emergency rescue plan, and formulate a corresponding emergency rescue plan so that the first spring can deal with the problem in a timely manner in case of an accident and ensure safe production. <>

Summary. There are mainly the following methods of drilling in coal mines:1

Manual drilling method: use a manual drilling rig to drill holes, suitable for small coal mines or shallow coal seams. 2.

Mechanical drilling method: the use of mechanical drilling rigs for drilling, high efficiency, suitable for large coal mines or deep coal seams. 3.

Hydraulic drilling method: the use of hydraulic drilling rigs for drilling, with the advantages of high efficiency, safety, environmental protection, etc., suitable for large coal mines or deep coal seams. 4.

Blasting drilling method: drilling in the coal seam and then injecting explosives for blasting, suitable for places where the coal seam is hard or there are obstacles in the coal seam. 5.

Hydraulic drilling method: Drilling using high-pressure water flow, suitable for places where the coal seam is soft or there is water in the coal seam. The above are common coal mine drilling methods, and the specific selection of which method needs to be comprehensively considered according to the actual situation of the coal mine.

There are mainly the following methods of drilling in coal mines:1Manual Drilling Method:

The use of manual drilling rigs for bi-loss drilling is suitable for small coal mines or places with shallow coal seams. 2.Mechanical Drilling Method:

The use of several mechanical drilling rigs for drilling, high efficiency, suitable for large coal mines or deep coal seams. 3.Hydraulic Drilling Method:

The use of hydraulic drilling rigs for drilling has the advantages of high efficiency, safety and environmental protection, and is suitable for large coal mines or places with deep coal seams. 4.Blasting Drilling Method:

Drilling holes in the coal seam and then injecting explosives for blasting are suitable for places where the coal seam is hard or there are obstacles in the coal seam. 5.Hydraulic Drilling Method:

Drilling with a high-pressure stream of water is used where the coal seam is soft or where there is water in the coal seam. The above are common coal mine drilling methods, and the specific selection of which method needs to be comprehensively considered according to the actual situation of the coal mine.

Can you elaborate on that a little bit more?

There are mainly the following methods of drilling in coal mines:1Manual Drilling Method:

The use of manual drilling rigs for bi-loss drilling is suitable for small coal mines or places with shallow coal seams. 2.Mechanical Drilling Method:

The use of several mechanical drilling rigs for drilling, high efficiency, suitable for large coal mines or deep coal seams. 3.Hydraulic Drilling Method:

The use of hydraulic drilling rigs for drilling has the advantages of high efficiency, safety and environmental protection, and is suitable for large coal mines or places with deep coal seams. 4.Blasting Drilling Method:

Drilling holes in the coal seam and then injecting explosives for blasting are suitable for places where the coal seam is hard or there are obstacles in the coal seam. 5.Hydraulic Drilling Method:

Drilling with a high-pressure stream of water is used where the coal seam is soft or where there is water in the coal seam. The above are common coal mine drilling methods, and the specific selection of which method needs to be comprehensively considered according to the actual situation of the coal mine.

1) Eat and rest well before entering the well, and do not drink alcohol;

2) It is strictly forbidden to wear chemical fiber clothes and carry cigarettes and ignition items into the mine;

3) Before entering the well, you should wear a miner's lamp, wear a safety helmet, and carry a self-rescuer.

4) When carrying sharp tools, put on a good sheath to prevent injury;

5) Attend the pre-class meeting on time; 6) Consciously abide by the well inspection system, obey the command, line up to enter the well, and accept the inspection.

In the process of drilling, all kinds of mechanical equipment are in operation, especially in deep hole operations, which are prone to accidents in the hole, mechanical, and personal accidents; Therefore, the operator is required to carefully observe the operation of the machinery according to the situation of formation drilling, and frequently check the safety protection facilities, find problems and solve them in time, eliminate the hidden dangers of collapse and collapse, and ensure safe production.

1) Measures for deep hole drilling operations.

1) Strictly abide by the drilling safety operation procedures; Conscientiously implement the drilling construction design plan.

2) Correct combination of drilling tools; Insist on lifting down the drill and strictly inspecting it. If the requirements are not met, the hole will not be allowed.

3) Reasonable selection of flushing fluid, do a good job in the formation pressure balance of unstable hole sections and borehole wall protection. The borehole flushing fluid should be selected according to the formation and lithology; When using mud drilling, the mud performance should be tested and adjusted regularly.

4) Control the drilling speed to prevent the instability of the hole wall caused by the suction of flushing liquid and pressure excitation. If necessary, (wellhead) flushing and recharge measures should be taken.

5) Deep hole drilling, the drilling tool must be tightened with a winch before reversing the rod; Do not turn on and off the car too fast or too violently.

2) Precautions for safe operation of drilling.

1) Strictly abide by the drilling safety operation procedures, and strictly prohibit illegal operations and barbaric operations. It is strictly forbidden to drink alcohol before going to work.

2) When entering the airport, you must wear a safety helmet and protective equipment, and it is strictly forbidden to wear slippers and go to work barefoot.

4) Concentrate on operating the lift, and raise it steadily, and do not brake suddenly. When the rough diameter drilling tool passes through the diameter change, casing shoe part, and the stone hole section of the probe, the descent speed should be slowed down.

5) When lifting and descending, the sight of the elevator operator should run up and down with the lifter, so as to prevent the lifter from hitting the platen or drill pipe frame. Do not touch the wire rope with your hands during the lifting process.

6) When the drilling tool raises the orifice, immediately cover the orifice cover, and when the drilling tool is in a suspended state, it is not allowed to visit or touch the core in the core tube.

7) The orifice operator must stand outside the lifting and landing range of the drilling tool. When taking off and hanging the extractor, pay attention to prevent the return rope from bumping. Draw and insert the cushion fork to prevent smashing hands.

8) It is strictly forbidden to grab the pad fork when running the drill. It is strictly forbidden to insert "flying forks".

9) When twisting the pipe, the drill pipe must be straightened, and it is strictly forbidden to start the twisting machine before the thread is not aligned. Before the pipe twister stops rotating, it is not allowed to lift the drilling tool.

10) The orifice operator must stand outside the range of the drilling tool, and pay attention to prevent the return rope from hitting when picking up the introducer. Pumping and inserting the pad fork should prevent the pressure on the hand, and also pay attention to avoid jumping out of the pad fork and hurting people when the drilling tool is lowered too violently.

11) When the rod needs to be reversed during the drilling process, it is strictly forbidden to stop the rod without stopping.

12) The staff on the tower must wear seat belts. It is strictly forbidden to throw anything from the tower to the bottom of the tower.