1. The driver and operator of the downhole drilling rig must undergo special training, obtain a certificate of conformity and hold a certificate.
2. Before construction, the construction personnel should organize the construction personnel to carefully study the technical measures and understand the construction purpose, methods and requirements. The construction should be carried out in strict accordance with the measures. Workers without learning measures are not allowed to enter the site.
First, drilling machine drilling protection measures
1. First add a protective baffle or fence between the rig and the orifice.
2. Set the fence in front of the rig and the rig console
3, the rig body should be fixed firmly, the column should be connected to the safety
4. Ensure that the pressure is even when drilling, and adjust the drilling progress according to the situation inside the hole.
5. It is strictly forbidden to stand after the drilling rig
Second, during the drilling process, there are safety measures for top drilling, clamping drilling and nozzle drilling.
1. Suspend drilling and timely evacuation
2, strengthen ventilation, until the gas is no longer sprayed out, the gas concentration is lower than the limit value before construction
3, personnel should avoid the front of the rig to prevent injury and injury
4. High pressure water injection into the hole to accelerate gas emission and reduce coal seam gas content and pressure
5. Strengthen the ventilation so that the discharged gas concentration is less than 1% before the drilling can be resumed.
6. Personnel evacuated to a safe room or safe place
7. Pull out the drill pipe to a part of the drill pipe and wait for the gas to be released before drilling.
V. Prevention of misunderstanding of coal seam safety measures
According to the geological conditions of the mine, the mine gas geological map must be prepared in time. The map should indicate the mining progress, the scope of protection, the conditions of coal seam occurrence, the geological structure, the location of the prominent points, the strength of the outburst, the basic parameters of gas, etc. Predict and develop the basis for prevention and control measures. When excavating the rock-collecting roadway at the top and bottom of the coal seam, it is necessary to periodically and difficultly geological data, and timely grasp the construction dynamics and changes in surrounding rock to prevent accidental penetration of the protruding coal seam.
Sixth, rig transportation safety measures
1. Personnel responsible for the transportation of the rig must pass the training and pass the examination and be certified to work.
2. When transporting machinery and equipment, it must not be extra long, super wide, super high or overweight. When the machinery and equipment are packed and transported, the consumable parts such as the oil pipe and joints, hydraulic valves, gears, racks, and sliding guide rails should be tightly closed and not allowed to be dragged on the ground during transportation. When carrying the equipment, do not touch the operating handles, and do not bend hard.
4. During the transportation of the rig, during transportation. The transportation of the downhole equipment must be carried out in accordance with the transportation requirements of the inclined shaft equipment.
5. The rig is tied by the drilling rig. The drilling rig, the inclined shaft and the inclined lane are driven. The hook is responsible for the winch. The drilling rig installation and disassembly of the roadway construction unit should be coordinated and assisted. The operation area and the safety supervision department are not sure whether the equipment is bundled. Check to make sure it is correct.
6. The drilling rig construction personnel must obey the inspection and command of the on-site inspection personnel during the operation. The shackle is operated by three people. When the vehicle is lowered, the driver at the bottom yard does not call the bell. When the winch is transported, the driver should concentrate on driving and listening to the signal and without the rope. Strictly implement the "no pedestrians" system.
Seven, equipment installation measures
When manpowering heavy objects, the site must have a unified command, echo each other, and stand up to prevent injury or damage to equipment.
1. When using the chain hoist to lift heavy objects, first check the strength and stability of the cantilever beam. When lifting the heavy objects with the frame, you must set up a person to legging and legging. When pulling a small chain, it should be evenly applied. It should not be too fast and too fast. When lifting heavy objects needs to be suspended, the small chain should be tied on the big chain. When the chain hoist is hung on the roof of the roadway, it must be hung in the preset special. Do not hang on the anchor net or anchor on the anchor cable.
2. Equipment installation should follow the following procedures and requirements
1 Before installing the rig, remove the floating coal and vermiculite, level the bottom plate, set the ground beam, select the appropriate position to place the drilling rig and dig the temporary drainage ditch.
2 The center line of the drill spindle is aligned with the drilling position, and the drill frame is placed. The base between the base and the ground beam is bolted, fixed on the base wood, and the column is placed.
3 The vertical axis of the drilling machine and the cutting edge of the leading edge of the balance wheel must be on a center line. The vertical axis angle must be consistent with the drilling design.
3. Safety facilities required for downhole drilling sites
1 A dedicated telephone directly connected to the dispatching room should be set up near the drill site to ensure normal communication.
2 Before construction, dredge the digging wells and use drainage facilities.
4. Equipment must be dismantled and transported
1 The rig must be bundled and sturdy on the vehicle disc. It is not allowed to be super high or super long. Remove the screws and other components, to use a covered iron or wooden box installed. Parts that are easy to lose, are owned by the driller and must not be loaded.
2 When disassembling and transporting, the air holes and oil eyes of the equipment must be tightly sealed, and the connecting bolts, nuts, shaft seats, pins, etc. should be replaced. When loading and unloading equipment, use special tools. It is strictly forbidden to hit directly with a hammer.
3 When the manual handling equipment is used underground, the equipment should be fastened with ropes, and it should be lightly lifted and lifted. It must be unified by special personnel, and the movements should be consistent.
Eight, drilling machine operation measures
1. Before the drilling machine starts, it is necessary for the ground testing personnel of the production department to check whether the orientation and inclination of the vertical shaft meet the design requirements. The construction inspector checks whether the installation of each part of the drilling rig is stable and conducts trial operation.
2. The following inspections should be carried out before the drilling machine is drilled.
1 The operating system has a complete set of handles, buttons and meters, flexible and reliable.
2 The oil quantity of the hydraulic system and the seal of each oil pipe joint control valve are intact, and the oil pressure system should adjust the zero guide position.
3 Whether the brake device, friction clutch and locking device are normal, if necessary, adjust, the pump rotation is normal, the displacement and pressure should meet the requirements.
4 During the drilling process, it is necessary to observe the color of the water flowing out of the borehole at all times, thereby judging the composition of the drilled coal seam, and timely reporting to the dispatching room and the geodetic surveying department to assist in the treatment.
5 Strictly check the quality of equipment, underground cables and equipment are strictly prohibited from detonation.
Nine, drilling construction safety technical measures
(1) Safety technical measures for drilling construction
1. The downhole rig driver and the driller electrician must undergo special training, obtain a certificate of conformity and hold a certificate.
2. Before construction, the construction personnel should be organized to carefully study the technical measures and understand the construction purpose, methods and requirements. The construction should be carried out in strict accordance with the measures. Workers without learning measures are not allowed to enter the construction site.
3. Personnel participating in the construction must abide by the instructions for going down the well, familiar with disaster prevention measures and underground disaster avoidance routes.
4. Before the construction of the underground coal seam, the objectives, tasks, construction methods and quality requirements of the project design must be carefully understood.
5. Drilling personnel should wear neatly and neatly, and the placket, cuffs and trousers must be tight.
6, the fuselage is placed smoothly, tighten the bottom screw. All kinds of electrical equipment must be explosion-proof, and the protective part and protective cover should be installed in the mechanical rotating part.
7. Check the vertical shaft before drilling, and prepare all kinds of materials, accessories and spare tools, and arrange them neatly and orderly.
8. Normal drilling should maintain uniform pressure and adjust according to the situation in the hole.
9. When drilling with clean water, it is necessary to ensure that there is enough water, and it is not allowed to dry the drill. In order to prevent the buried drill, the pump must be pumped first. After returning to the water, it can be drilled.
10. Record all kinds of data in a timely, accurate and comprehensive manner, and fill in the original construction report.
11. In accordance with the design and construction during construction, there are abnormal situations reported in time.
12. Drilling shall be strictly in accordance with the drilling design drawings of the general working area to ensure the quality of drilling construction.
13. The actual measurement of the borehole, strictly according to the azimuth and slope of the roadway, the on-site technicians fill in the construction progress and the coal seam layer horizon map, and the geodetic survey section accurately fills in the control map of the tunneling control point.
14. The drilling construction personnel must follow the instructions of the geotechnical personnel on duty to accurately control the position of the coal seam. During the drilling process, the drilling must be stopped when the coal point is seen. After the geological personnel make a record, they can continue to drill and must obtain the geological personnel. After agreeing, you can withdraw the drill.
15. According to the drilling data collected on site, the geological personnel sorted out and plotted the actual results of the drilling.
16. During the construction process, the probe on the head must be hung in the upper position of the front of the rig; the wind and gas lock must be complete and effective.
17. When installing and disassembling the drill pipe, pay attention to personal safety. It is strictly forbidden to stand after the drill to prevent the top drill from injuring people.
18. After the drilling is completed, the hole should be sealed in time.
19, the striking tool should drill field using copper products, to prevent spark, ignite the gas.
20. A protective baffle or baffle should be installed between the rig and the orifice and before the rig operating platform to protect the drill from being damaged by prominent coal and rock.
21. When changing the hole or withdrawing the drill, the gas in the borehole must be completely released before the drill pipe can be pulled out to prevent the gas in the hole from being ejected or causing the coal rock to cause injury.
22. Other unfinished matters shall be strictly implemented in accordance with the relevant provisions of the [Safety Regulations for Coal Mines" and [Operational Regulations for Coal Mine Safety Technology".
(II) Technical measures for prevention of gas safety
1. To strengthen the monitoring of gas in drilling, a full-time tile inspector should check the gas condition according to the time and report the change in time.
2. Drilling team management personnel, team leader, must carry portable methane alarm device, and continuously test the methane in the construction scope. If there is an alarm phenomenon (methane alarm point is 1%), it must be reported and processed in time.
3. The position of drilling holes should be observed first to see if there are any safety hazards. Whether the roof support is intact or not, there are hidden dangers that must be dealt with first to ensure that there are no safety hazards before construction.
4. The construction site must be guarded by gas inspectors and safety supervisors, otherwise construction is strictly prohibited.
5. The drilling site must be well ventilated, the air duct must follow the working surface, and the local ventilator must be managed by a special person to prevent unplanned power outages and winds.
6. When drilling the drill, it is necessary to concentrate on the idea, while drilling and observing the change in the hole, it is found that the abnormality is stopped in time.
7. When the harmful gas in the borehole is ejected, the gas is sharply increased, and the drill pipe is drilled, the drill should be stopped immediately to strengthen the ventilation. In accordance with the regulations, measures should be taken in time to report to the relevant departments of the mine.
8. When drilling the hole into the design position, the gas content in the hole must be checked to ensure that there is no overflow before the drill pipe can be pulled out.
9. When the gas concentration in the roadway wind reaches 1%, the operation must be stopped. When the gas concentration in the roadway near the drill field is 1.5%, the operation must be stopped, the personnel should be evacuated, the power supply should be cut off and processed, and the wind power flow within 20 meters near the electromechanical switch. When the gas concentration reaches 1.5%, it must be stopped, the personnel removed, the power supply cut off and processed.
10. When one of the following situations is encountered during drilling, the operation must be stopped immediately, the personnel must be withdrawn, and the headquarters should be returned and listened to.
(1) The gas concentration increases or decreases;
(2) Spraying water, coal or gas inside and outside the borehole;
(3), the drilling pressure is increased, and the top drill and the stuck drill appear;
(4) There are coal cannon sounds and rock break sounds.
(5) When the ambient gas concentration exceeds 1%.