Underground drilling machine

1. Safety precautions for coal mine tunnel drilling construction default classification 2008-08-17 16:52 read 25 comments 0 font size: large, medium, small 1. Drilling ground operators should pay attention to that because the drilling tool in the hole does not circulate mud (the drill bit is cooled by clean water from 300m), the tap and the rotating part of the drilling tool must be cooled by clean water, Prevent the faucet and drilling tool from burning out. 2. The tools used by the ground operators must be fastened with ropes to prevent falling into the hole and damaging the tunnel construction personnel. 3. The ground wellhead must be equipped with protective railings, and the miscellaneous personnel shall not be close to the wellhead, so as to prevent the construction personnel from being injured by the debris falling into the wellhead. 4. Operators of drilling tools must pay attention to that when the drilling tools are lifted up and down, they must follow the telephone instructions of tunnel construction personnel. When the telephone contents are not clear, they shall not lift the drilling tools to prevent injury. 5. The measurement of the drilling tool running into the hole must be accurate. Before the drilling tool reaches the predetermined position, the lowering speed must be controlled to prevent the drilling tool from suddenly entering the 300m position and hurting people. 6. For every 3 ~ 5m reaming of the combined reaming bit, the 300m roadway position must be raised for flange connection inspection to prevent accidents in the hole caused by bolt loosening. 7. Never drink alcohol before entering the well, so as to avoid accidents caused by unconsciousness. At the same time, it is strictly forbidden to bring kindling items into the well, such as matches, lighters, electronic watches and other items that can cause fire. 8. Consciously abide by the coal mine's "check the body and check the personnel in and out of the well" system, obey the command, line up to enter the well, accept the check, when going up and down the well, strictly abide by the rules and regulations of the wellhead and the bottom of the well, wait at the designated place, wait until the cage stops stably, line up to go up and down the cage in turn. 9. After entering the cage, personnel are not allowed to fight and make trouble; Hold on to the armrest, hands, feet, heads and the tools and articles carried with you are not allowed to expose the outside of the tank, and do not scramble up and down when the cage has not stopped. 10. When walking in the lane, when the vehicle approaches, wait for the side, wait for the vehicle to walk later, and it is strictly forbidden to pick up the car and take the conveyor belt. 11. It is strictly forbidden to enter the place with fence or danger warning sign at the entrance. It is strictly forbidden to walk around the roadway out of curiosity and act alone, causing disorientation and causing unnecessary trouble to the mine. 12. When the combined bit of roadway is butted, attention should be paid to the drilling at the foot to prevent the accident of personnel falling into the hole e to carelessness. 13. When changing the combined bit, the ground and roadway must be contacted by the chief and Deputy captains through telephone. 14. The tunnel construction personnel, at 300m, should pay attention to ensure that the combined drill bit is cooled with clean water to prevent the drill from burning. At the same time, the water supply personnel should not be less than 2. The team leader or deputy team leader should be in charge of the shift, and they should not leave the wellhead at 300m at will. The wellhead must be equipped with safety barriers, and the miscellaneous personnel should not enter. At the same time, the wellhead should be laid with guard board. 15. During normal reaming drilling, the captain and the Deputy captain conct post inspection from time to time by telephone. If they are found to be off ty, they shall be dealt with seriously. 16. During the construction, when any abnormality is found, the tunnel construction personnel shall timely notify the ground personnel and the mine dispatching room by telephone. 17. Coal mine is a high-risk instry. Before entering the well, we must sleep, eat and rest well. In order to keep energetic and energetic and ensure the smooth construction.

2. The core machine is used to detect the drill hole in concrete pavement. Its function is to drill concrete cylinder specimens in concrete pavement field to detect the strength of concrete pavement.

3. Yes
mine boring machine
thirteen cubic meters energy
configure st collector
mine boring machine
thirteen cubic meters energy
configure st collector
mine boring machine
thirteen cubic meters energy
configure st collector

4. Generally, blasting drill is used, and it is also called open-pit down the hole drill. Drilling within 20 meters, the blast hole is 120 mm or smaller, generally using pneumatic DTH hammer operation, with mobile air compressor, so the efficiency is very high. Our company can help you with the scheme design and equipment configuration.

5. If the rock is hard, you can choose diamond bit, so the cost will be lower. If the alloy bit is used, the cost will be higher
drilling machine is a kind of machinery and equipment that uses harder and sharper tools than the target to leave cylindrical holes or holes on the target by rotary cutting or rotary extrusion. It is also called drilling machine, drilling machine, drilling machine, through hole machine, etc. Through drilling precision parts, to achieve the desired effect, drilling machine has semi-automatic drilling machine and automatic drilling machine, with the increase of human resource cost; Most enterprises consider automatic drilling machine as the development direction. With the development of the times and the improvement of drilling technology of automatic drilling machine, it has obvious advantages to use automatic drilling machine to drill all kinds of metal mold strap, strap and jewelry.

6. In the underground operation of coal mine, the phenomenon of drill pipe being clamped often occurs in coal mining, drilling, drilling and so on. The common methods are as follows:
1. Use the drilling machine to move forward and backward, and knock the drill pipe with hammer at the same time,
2. Manually move the rotary rod, hammer the rotary rod, and then use the rotary machine to move forward and backward.
3. If the site conditions permit, hydraulic equipment can be used to pull out the rotary rod,
4, Only when the hole is re drilled in another place can the original rotating rod be abandoned.

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8. Drilling in coal mine? It's drilling, drilling. Drilling is mainly to explore and blast holes. Generally, air hammer or rock drilling jumbo is used to drill shallow holes
boreholes are mainly used for water exploration and drainage, gas extraction, large hole for ventilation, etc

9.

Measurement while drilling (MWD) technology in coal mine is developed from oil drilling technology. However, e to the differences between the construction environment, drilling form, construction purpose and oil drilling, the requirements for measurement method and transmission technology are also different. Specific performance in the following five aspects: 1) poor construction environment in coal mine. In the coal mine underground gas drainage drilling construction to face the coal st, gas, moisture and other environment, not only caused inconvenience to the construction personnel operation activities, but also put forward the requirements of moisture-proof, explosion-proof and other construction equipment. Therefore, the measurement while drilling system generally used in surface drilling can not meet the needs of underground construction in terms of explosion-proof performance

2) according to the layout form and construction purpose of directional drilling in coal mine, MWD is mainly for the purpose of guiding and drilling trajectory description, and provides the measurement results and drilling trajectory to drillers, so that they can control the drilling trajectory at any time. Therefore, the measurement while drilling mentioned here mainly refers to the measurement of attitude parameters. Generally, the formation evaluation while drilling (FEWD) is not carried out for the purpose of exploration. Compared with the measurement while drilling in oil drilling, the requirement of the instrument for the measurement while drilling in coal mine is relatively simple

3) the size of drilling tools used in underground drilling construction is generally small, and the maximum diameter of drill pipe is 89mm, which determines that the diameter of MWD device should be small, so that it can be installed into the drill pipe and can not affect the flow of flushing fluid; The length of MWD should be short, generally not more than 3m, so it is easy to use in underground coal mine roadway. In addition, the construction environment of underground coal mine is bad, and there is no buffer and protection device similar to oil drilling in the drilling process, so the MWD instrument is required to have strong seismic performance

4) measurement while drilling is generally used in the construction of gas drainage hole, water exploration and drainage hole and exploration hole of geological anomaly body in coal mine. No matter the construction cost or the process complexity, it can not be compared with oil drilling. Therefore, the cost of measurement while drilling instrument used in coal mine should not be too high, and it should be simple and practical

5) the layout of borehole in coal mine is mainly near horizontal borehole. In the construction process, clean water is generally used as the circulating medium, and sealing device is generally not used at the orifice, so the drilling technology is different from that of oil drilling. Therefore, in addition to considering the applicability of wire transmission, it is necessary to explore the feasibility of other wireless transmission technologies

10.

Measurement while drilling (MWD) technology in coal mine is developed from oil drilling technology. However, e to the differences between the construction environment, drilling form, construction purpose and oil drilling, the requirements for measurement method and transmission technology are also different. Specific performance in the following five aspects:

1) coal mine construction environment is poor. In the coal mine underground gas drainage drilling construction to face the coal st, gas, moisture and other environment, not only caused inconvenience to the construction personnel operation activities, but also put forward the requirements of moisture-proof, explosion-proof and other construction equipment. Therefore, the measurement while drilling system generally used in surface drilling can not meet the needs of underground construction in terms of explosion-proof performance

2) according to the layout form and construction purpose of directional drilling in coal mine, MWD is mainly for the purpose of guiding and drilling trajectory description, and provides the measurement results and drilling trajectory to drillers, so that they can control the drilling trajectory at any time. Therefore, the measurement while drilling mentioned here mainly refers to the measurement of attitude parameters. Generally, the formation evaluation while drilling (FEWD) is not carried out for the purpose of exploration. Compared with the measurement while drilling in oil drilling, the requirement of the instrument for the measurement while drilling in coal mine is relatively simple

3) the size of drilling tools used in underground drilling construction is generally small, and the maximum diameter of drill pipe is 89mm, which determines that the diameter of MWD device should be small, so that it can be installed into the drill pipe and can not affect the flow of flushing fluid; The length of MWD should be short, generally not more than 3m, so it is easy to use in underground coal mine roadway. In addition, the construction environment of underground coal mine is bad, and there is no buffer and protection device similar to oil drilling in the drilling process, so the MWD instrument is required to have strong seismic performance

4) measurement while drilling is generally used in the construction of gas drainage hole, water exploration and drainage hole and exploration hole of geological anomaly body in coal mine. No matter the construction cost or the process complexity, it can not be compared with oil drilling. Therefore, the cost of measurement while drilling instrument used in coal mine should not be too high, and it should be simple and practical

5) the layout of borehole in coal mine is mainly near horizontal borehole. In the construction process, clean water is generally used as the circulating medium, and sealing device is generally not used at the orifice, so the drilling technology is different from that of oil drilling. Therefore, in addition to considering the applicability of wire transmission, it is necessary to explore the feasibility of other wireless transmission technologies