Features of QYD-800 fully hydraulic core exploration drilling rig
(1) Crawler chassis
Equipped with wireless remote control crawler chassis, suitable for a variety of terrains, in a safe distance to the drilling rig walking control, prevent sudden danger.
(2) Frame
The frame of the welded structure is welded on the crawler chassis, which can improve the rigidity and drilling stability of the slide frame when it is erected.
(3) Slide frame
The sliding frame of welded structure adopts hot rolled carbon channel steel and square steel as power head guide rail, and controls the smooth lifting of oil cylinder through one-way throttle valve.
(4) Drill tower
The drill tower adopts the touchdown base for touchdown fixation, making drilling more stable.
(5) Rotary mechanism
Power head rotation using axial piston pump and inclined shaft piston motor drive, mechanical two gears plus stepless speed regulation, advanced structure.
(6) Push mechanism
The double speed feeding mechanism of cylinder chain is adopted, the movement is stable and reliable, and the power head side translation mechanism is equipped.
(7) Hydraulic clamp
To achieve clamping drill pipe, with drill pipe disassembly.
(8) Hydraulic winch
Hydraulic motor driven hoist, flexible lifting tool or auxiliary equipment.
(9) Hydraulic legs
Four hydraulic legs can quickly level the drilling rig, equipped with hydraulic lock to prevent jack creep.
(10) Control console
All control functions are centralized on the control table, easy to operate, save time and effort.
(11) Hydraulic system
The rig is fully hydraulic driven, hydraulic system adopts load sensitive control, high efficiency, high torque.
(12) Power system
Power system using large factory diesel engine, the national after-sales worry.
(13) Cooling system
Adopt air cooling and water cooling, the way is more diversified, can ensure the long time operation of the machine.

Parameters of QYD-800 fully hydraulic core exploration drilling rig

Note: The product is continuously improved, and subject to change without notice, please refer to the actual product.

1, Operation methods of various drilling rigs
1. Preparation before operation:
(1) The installation of the drilling rig should be firm, the oil level in the gearbox and oil tank should be appropriate, and the safety cover and dust cover must be aligned
All right.
(2) The operating handles of each part should be in the correct position.
(3) When debugging the drilling rig, it is required that all rotating parts operate normally and the switch start should be flexible and reliable. Empty load operation of drilling rig
Walk for 10 minutes. After confirming that there are no issues, the drill rod and drill bit can be connected, the water source can be connected, and the driver can start drilling.
2. The operation methods of various drilling rigs should be carried out according to the instructions provided by each rig.
(1) The operation method of MYZ series hydraulic drilling rig is:
① Use the joystick on the control panel to control the rotation and advancement of the drill rod. When the operating handle is pushed forward from the neutral position,
The drill bit rotates clockwise for drilling or installing drill rods. When the operating handle is pulled back from neutral, the drill bit rotates counterclockwise
Rotating, detachable drill rod;
② The operating handle for pushing the oil cylinder can control the drill bit to move forward or backward. When pushing forward, the drill bit moves forward, and when pulling backward, it moves forward
Head backwards;
③ When rapid advance or retreat is required, the quick operation handle can be operated in the same way as the feed cylinder, that is, pushing forward and pulling
back off;
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2. When installing drill rods, the following issues should be noted:
(1) Firstly, check the drill rod to ensure that it is not blocked, bent, or worn; Unqualified products shall not be used.
(2) When connecting the drill rod, align it with the thread to avoid skewing and water leakage;
(3) When loading and unloading drill bits, strict precautions should be taken to prevent pipe clamps from damaging hard alloy sheets and flat drills
Head and core tube.
(4) When installing drill rods, the second one must be installed after the first one has been installed.
3. When the drill bit is inserted into the hole to start drilling, the pressure should not be too high. It should be lightly pressed and drilled slowly to avoid blade breakage or damage to the variable speed teeth
After the drill bit reaches the bottom of the hole and works smoothly, the pressure gradually increases.
4. When drilling with clean water, water must be supplied before drilling and can only be supplied after the water returns
Press drilling and ensure sufficient flow rate; Do not drill dry holes. When there is a lot of rock powder in the hole, the water volume should be increased and the opening should be extended
Pump time, stop drilling only after thoroughly flushing the hole.
5. When drilling, the driller should carefully observe the operation of the drilling rig, that is, observe the water supply, drilling water supply and drainage, and the inside of the drilling hole
Vibration sound and other situations.
6. During the drilling process, it is necessary to accurately measure the distance. Generally, the drill rod must be measured every 10 meters of drilling or when changing the drilling tool
Verify the depth of the hole.
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7. During the operation of the drilling rig, attention should be paid to observing the bearing parts, hydraulic oil, motor, gearbox, shaft sleeve, and horizontal and vertical shaft teeth
Check for overheating and abnormal sounds in the wheels. If any problems are found, stop the machine immediately, investigate the cause, and handle it promptly.
8. The precautions during drilling are as follows:
(1) Discovering loose coal and rock, loose edges, excessive pressure, visible water or water volume in the hole, sudden increase or decrease in water pressure, and top drilling
When drilling, drilling must be stopped immediately, but the drill pipe must not be pulled out. Personnel must be dispatched immediately to monitor the water situation and promptly report to relevant departments
Report.
(2) When harmful gases are found to be emitted from the goaf during drilling, the drilling should be stopped to strengthen ventilation, and the hole should be sealed with yellow mud. At the same time
Mine dispatch room report.
(3) When there is a sharp increase in gas and the phenomenon of drilling pipes during gas drainage, measures should be taken in a timely manner.
(4) When coal seam water injection drilling is carried out into the roof or floor rock, the drilling should be stopped, the hole should be scrapped, and the scrapped hole should be sealed,
Do not inject water.
9. When replacing the drill bit, attention should be paid to matching the hole diameter with the drill bit diameter to avoid jamming the drill bit.
When stopping drilling temporarily, the drill bit should be withdrawn from the bottom of the hole by a certain distance to prevent coal and rock powder from jamming the drill rod; Drilling should be stopped for more than 8 hours
Pull out the drill rod.
When transporting drilling tools, personnel in front and behind should communicate and cooperate closely to prevent injury accidents.
10. The precautions for drilling tool entry are as follows:
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(1) Before lifting the drill, it is necessary to measure the remaining length on the machine, open the brake device, clutch device, lifting device, and tighten the elevator
The unloading tools should be complete and easy to use, and any problems found should be addressed
Timely processing.
(2) Before drilling, holes must be punched with clean water to remove coal and rock powder.
(3) During the drilling process, the driller must closely cooperate with other workers, and the operation should be light and stable, without sudden braking or jerking
Do not overload the work and do not touch the steel wire rope with your hands. Other workers must stand outside the lifting range of the drilling tools.
(4) After the core tube is drilled, the hole should be immediately covered, and it is not allowed to touch or observe the core inside with hands or eyes.
(5) The proposed rock core must be cleaned thoroughly and arranged neatly and orderly.
(6) After the drill rod is raised, cotton thread should be wrapped around both ends to prevent the drill hole from being blocked or the thread from being damaged. For gas drainage
After drilling, the drill pipe should be plugged with a wooden plug to prevent gas overflow.
3, Seal the hole
1. Before sealing the hole, the coal and rock powder inside the hole must be removed. Generally, the hole is sealed with mortar or directly sealed with a sealing device.
2. Attention should be paid to the following issues when sealing holes with mortar:
(1) Mortar sealing requires casing, which can be made of steel pipe or steel pipe at the outer end and plastic pipe at the inner end. Coal seam water injection hole
The casing can also be made of high-pressure rubber hose woven with steel wire.
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(2) The sealed part needs to be enlarged, and the diameter of the hole is generally not less than 100 millimeters. The sealing depth of coal seam water injection drilling holes should generally be large
At 5 meters.
(3) When sealing the hole, first firmly fix the casing inside the borehole. The fixing method can use wooden plugs around the casing
Methods such as silk and seaweed. The casing generally needs to expose the hole opening by 10-15 centimeters.
(4) After the casing is inserted into the borehole, the cement sand prepared according to regulations can be manually injected or sealed with a syringe, mud pump, etc
The slurry is sent into the borehole outside the casing wall.
(5) Manually sending mortar to seal the hole requires compacting with force while delivering the mortar; When using a pump to seal holes with mortar, the grouting pipe should be fixed
Inside the borehole, the hole opening should be sealed, and the mortar inside the pump should be cleaned with water at the end of the work.
3. The precautions for sealing holes with a sealing device are as follows:
(1) The sealing device should be intact.
(2) When installing the sealing device for elevation drilling, the operator must not face the sealing device directly to prevent it from sliding down and injuring people.
(3) When installing the hole sealer, one person uses pliers to fix the outer cover of the sealer, while the other person uses pliers to tighten the thread; Connecting gas
When connecting the door to the branch pipe, the main valve of the branch pipe must be closed.
(4) When using a hydraulic or mechanical pressure sealer, the pressure should be evenly applied, starting with a small amount and then increasing, and the speed should not be too fast
Apply pressure after the outer wall of the sealing device comes into contact with the borehole wall.
4, Closing work before leaving work
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1. Before leaving work, the work situation and various data of this shift, such as drilling angle, footage, depth of casing placement, and rock core, should be reported
Record the collection status, equipment operation status, etc. comprehensively and accurately.
2. Strictly implement the on-site handover system, and the team leader and recorder should clearly record the situation of the team according to the record form
And sign it.
3. After the completion of drilling, various follow-up work should be carried out under the command of the captain, such as relocation, maintenance and storage of the drilling rig
Replacement of drill rods, joints, and couplings, quality acceptance of drilling holes, and transfer of relevant materials, etc., to prepare for the next construction
Preparation work.
11, Operating procedures for anti outburst effect inspection workers
1, Preparation work before entering the well for testing
1. Before entering the well, a comprehensive inspection and calibration of the required instruments, meters, tools, etc. must be carried out to meet the requirements
Testing requirements.
2. Before testing, it is necessary to clearly record the person in charge and the person in charge of parameter measurement to ensure the accuracy and reliability of the test results.
2, The specific work of testing parameters
1. The operation of using WTC gas outburst prediction instrument to determine the risk index K1 value and drilling debris volume of coal seam outburst:
(1) Preparation work before testing: fully charge the instrument according to the instructions and perform a trial operation to confirm that there are no issues
Only then are instruments allowed to work underground; After arriving at the scene, the instruments were placed steadily and the personnel division of labor was clear.
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(2) The specific operation is as follows:
① Connect the power, preheat the meter for 10 minutes, and zero the instrument;
② Input the critical indicator data of K1 value and Smax (drilling cuttings volume) of this mine into the instrument, or follow the "Prevention and Control of Coal and Tile
Enter the upper and lower limit critical values in accordance with the "Detailed Rules for Highlighting";
③ Select the appropriate drilling location within the coal seam;
④ When measuring, sieve the coal sample with a sieve of 1-3 millimeters, pour the sieved coal sample into the coal sample tank, cover the tank lid, and pour it
Open the exhaust switch and record the time. After 1-2 minutes, tighten the exhaust switch and press the monitoring button at the same time, and the instrument will
Entering and Automatic
Measurement phase;
⑤ After 5 minutes, enter the sampling time data, press the monitoring button, enter the drilling length data, and then press the monitoring button again
The instrument calculates and displays the K value, then pours out the coal sample and proceeds to measure the next coal sample;
⑥ After measuring the K1 values of all coal samples, press the forecast button, enter the Smax value, and then press the monitoring button. The instrument will automatically display
Highlight the level of danger;
⑦ After measuring all coal samples underground (no more than 25 coal samples), turn off the machine according to the method specified in the instrument instructions;
⑧ After bringing the instrument to the well, connect the CYV15-1 micro printer and ATY instrument in the event of a power outage,
Connect the power, press the print button on the instrument, and the printer will automatically print out all test data and predicted results.
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(3) Precautions during operation include:
① The operation should be strictly carried out according to the instructions, and the full potentiometer of the ATY instrument should not be moved at will, and the main switch should not be opened at will
Machine cover;
② If it is not used for a long time (more than 10 days), it must be charged every 10 days;
③ It is necessary to systematically organize and analyze the results of each measurement, and promptly submit them to the leadership for review. Attention should be paid
Observe the signs of sudden attack and the geological changes of coal seams in the geological structure area, and make records and sketches;
④ Operators should carry self rescue devices and take self-protection measures when working underground.
(4) The precautions for measuring the initial velocity of gas outburst are as follows:
① The specific location of the borehole should be determined based on the structure of the coal body, and the boreholes should be arranged strictly according to the design orientation to achieve uniform drilling speed
Evenly discharge the drill cuttings according to the testing requirements.
② When measuring, data should be measured every 1 meter of construction. From the start of drilling, after extracting the amount of drill cuttings for every 1 meter section, stand upright
Pull out the drill rod and insert the sealing device. It is required to read the initial gas emission velocity of the meter section within 2 minutes.
③ When measuring, the timing and reading must be accurate. When the initial speed of gas emission is slow, the measurement time is generally 3-5 hours
If the initial speed of gas emission is fast, the measurement time should not be less than 10 minutes.
④ While collecting the amount of drill cuttings, the number of times the drill rod is pulled is basically the same, and personnel are evacuated and reported to the mine dispatch room.
2. Operation of MD-2 Gas Desorption Parameter Meter for Measuring △ h2 (Unit: Pa):
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① When drilling, remove the drill cuttings from the designated location.
② Use sieves with apertures of 1 and 3mm to sieve (with a sieve with a diameter of 1mm at the bottom and a sieve with a diameter of 3mm at the top)
③ Place the screened sample with a particle size of Ø 1-3mm into the coal sample bottle of MD-2 desorption instrument, and load the sample into the coal sample
The bottle scale line is horizontal (about 10g)
④ After 3 minutes from drilling to the sampling section, start the stopwatch and turn the three-way valve to isolate the coal sample bottle from the atmosphere
Leave.
⑤ Record the reading of the desorption instrument at 2 minutes, which is Δ h2 in Pa
3. When carrying out specific operations, the following issues should also be noted:
① When measuring drill cuttings, it is necessary to ensure that the number of times the drill rod is pushed and pulled per meter is basically the same to reduce testing errors.
② During construction, observe the dynamics of the coal wall at all times. If any abnormal situations are found (such as protrusion or gas exceeding the limit), stop immediately
Homework, evacuate personnel and report to the dispatch room.
③ A portable gas detection and alarm device should be installed at the work site, and only the gas concentration meets the requirements of the Coal Mine Safety Regulations
Timed work is necessary.
3, Inspection of safety protection facilities
1. Before implementing any anti surge measures, the anti surge worker must master the requirements of the anti surge measures and be familiar with the construction operation procedures,
Master the ventilation system and emergency avoidance routes in the construction area.
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2. Emergency prevention workers should regularly inspect the compressed air self rescue device in the construction area to ensure its normal operation, and check the on-site safety measures
Report the progress of implementing harmful measures and promptly report any abnormal situations to relevant leaders.
3. When the prescribed anti outburst measures cannot be implemented due to geological conditions or other reasons, the operation must be immediately stopped
Report to the leader on time.
4. When using long-range artillery, set up a warning; The location where blasting workers practice blasting should be equipped with first aid bags or self rescue
After blasting for 30 minutes, you can enter the working face for inspection.
5. Prominent coal should be cleaned up in a timely manner to prevent spontaneous combustion and explosion. When cleaning up protruding coal, measures must be taken to prevent further damage
Take protective measures in case of accidents.
6. For protruding holes, they should be filled and topped, and the holes should be promptly sealed with arches or grouted to prevent spontaneous combustion.
7. It is necessary to wear isolated self rescue devices and portable gas detection and alarm devices when entering mining faces with prominent hazards.
4, Collection and organization of prominent materials
1. After each outburst, an on-site investigation must be conducted in accordance with the requirements of the "Detailed Rules for Preventing and Controlling Coal and Gas Outburst"
Record and collect relevant information in detail.
(1) Record the prominent time, prominent location, vertical depth from the surface, tunnel name, support situation, coal seam characteristics, and location
Quality structure and adjacent mining conditions, etc.
(2) Investigate the premonitions before the protrusion, the processes that occurred before and during the protrusion, the characteristics after the protrusion, and the damage to the support structure
Report the situation to the relevant leaders.
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(3) Investigate the magnitude of gas pressure before the outburst, normal gas concentration, and gas outburst after the outburst, and report to relevant authorities
Report to the leader.
(4) Draw a system diagram of prominent locations, including coal seam profiles and coal rock column charts.
(5) Investigate the preventive measures taken before highlighting, attach construction drawings, and report to relevant leaders.
(6) Fill in the prominent record card, the data on the record card should be accurate, the attached drawings should be clear, and the main dimensions should be indicated.
(7) For protrusions with a strength greater than 500 tons, a special investigation report must be filled out.
2. In order to do a good job in daily management of conflict prevention, "four diagrams, four accounts, and one card" should be established.
(1) The four drawing boards include gas geological map, dynamic map of prominent coal seam mining face, and the relationship between protective layer and protected layer
Series drawing board, on-site anti-collision construction drawing board.
(2) The four accounts are the basic parameter account, coal pillar account, gas drainage account, and outburst prevention account for the actual investigation of prominent coal seams
Equipment and instrument usage and intact ledger.
(3) One card is the coal and gas outburst card after the outburst occurs.
3. Every year, outstanding record cards for the whole year should be organized to provide materials for system summary.