Track rig construction safety measures

First, the construction overview:

The specific construction drilling location, specifications, and dust-proof zones are formulated according to the needs of coal seam water injection.

Second, the operation organization:

1. The drilling rig is divided into early classes and drills. Each class is equipped with 2 drillers, 2 drillers and unloading drills, and 1 slag and drainage.

2. Each class is equipped with the team team and the team leader, responsible for the safety of the job site and the quality of the project.

3. Daily maintenance, complete all maintenance and maintenance tasks in accordance with the requirements of daily inspection, weekly inspection and seasonal inspection.

Third, drilling rig parameters and system requirements

1, drilling rig

The ZDY3200L directional drilling rig is a crawler walking hydraulic propulsion rig. The detailed parameters are as follows:

Specification weight

Total weight 5600kg

Drilling depth 300M

Final hole diameter 94MM

Spindle inclination angle 0 to 60 degrees

Motor rated power 45KW

Drill pipe, drill bit, drilling

Drill pipe diameter / length of each drill pipe 73 mm / 1500mm

Drill diameter 94 mm

2, water supply system

Move the 5212 along the direction of the trough to the left hand to help the 4-inch static pressure water pipe to add a 50 to 38, and connect 38 high-pressure water pipes to supply water to the drilling rig.

4, transport slag, slag route

Shovel the sedimentation tank cinder into the woven bag. When one car is enough, the car must be out of the well.

Fourth, transportation and installation measures

1. Before drilling the rig, carefully inspect the rig, drill pipe, switch and other equipment and components, and confirm that it is in good condition.

2. During the transportation process, the following personnel should check the drilling rig and the attached equipment from time to time, and an abnormality will occur, and report and deal with it immediately. Strictly in accordance with the relevant regulations of the transport team.

3. Before moving the rig, the cadre of the team will set up a warning line 10 meters before and after the drilling site, and send special personnel to watch it. It is strictly forbidden for the unrelated personnel to enter; the team leader checks the top support situation of the operation site and finds hidden dangers immediately.

4. When moving the rig, coordinate and direct the cadres with the team; the rig driver concentrates and operates the rig, paying attention to the personnel, equipment, cables, liquid pipes and commanders' sound and light signals around the rig, and find abnormalities and stop immediately.

5, the team cadres designated to monitor the cable, liquid pipe; personnel need to maintain a distance of more than 5m with the rig, found abnormal, immediately issued a shutdown signal.

6. The accessories are transported to the 5212 slot drill site by special vehicles. When unloading the vehicle, the team will set up a warning line 10m before and after the unloading place, and designate a special person to guard against the proximity or passage of unrelated personnel.

7. Before unloading the parts, the team must carry out strict inspections and checks on the working environment and equipment, and confirm that there is no hidden danger before setting the warning area. During the operation, the team carefully followed the unloading situation, found the abnormality, and immediately stopped the operation; the operator avoided the tendency of the equipment to slide down. If you need to lift the accessories, you need to carry out the drawing test on the lifting anchors used before the test results are qualified. And put a few drills in the rig accessories. Does not affect pedestrians.

8. The power supply of the drilling rig is strictly installed with gas blocking device; the cable must be hung with cable hooks neatly and meet the requirements; the switch must be placed within 20m of the wind side of the drilling site, and carried by a special switch frame and more than 100mm from the ground, and avoid The top plate has a place to drench.

9. Electromechanical equipment such as shifting, switching, junction box, drilling rig, etc., need to set the grounding pole as required to prevent the explosion and imperfections. The drilling rig operation and maintenance personnel shall install the rig components disassembled for transportation according to the instructions and drawings. After the joint inspection and acceptance by the Ministry of Electrical and Mechanical Engineering and the Ministry of Production Technology, the test operation can be carried out.

10. Before the power is received, after the electrician is approved by the power supply department, the power supply is connected according to the “Power Supply System Diagram”. Check the rig cable plug and socket before sending power to ensure clean and dry.

11. After all the preparations have been completed, clean up the debris on the construction site to ensure smooth retreat.

12. Each rotating part of the protective cover and screws must be in good condition and securely fastened.

13. The telephone must be installed in the drill site; the gas sensor should be installed as required, and the power supply of the drill can be reliably blocked.

14. Before the construction, the water supply pipeline should be tested for water to ensure that there is no water leakage and the water pressure and water quality meet the requirements and then connected with the drilling rig water supply system.

15. When the rig moves, it is necessary to lay a belt of 0.5 m wide and 3 m long under two tracks to prevent crushing the road surface. The staff should properly control the handlebars to keep the rig evenly moving forward or backward. It is strictly prohibited to exceed the allowable slope and slope of the rig.

16. When suspending on a slope with an inclination of more than 5°, in addition to the locking rig, an effective method such as padding should be adopted to stabilize the drilling rig.

17. When there are steps on the route with a drop greater than 10cm or a ditch with a width greater than 15cm, it must be leveled and then passed.

V. Drilling construction measures

1. The rig must be fixed in a safe and reliable place, and the rig is fixed firmly and smoothly to ensure the safety of drilling and the accuracy of parameters.

2. Use the slope gauge to adjust the inclination of the opening, or the azimuth given by the geodetic survey, and the inclination to ensure compliance.

3. After the operation is completed, clean and flush the debris on the valve block, track frame, track and cylinder.

4. Before power transmission, make sure that the operating hand valve is closed. (especially rotating and propelling the handle)

5. Turn the power handle to the "on" position.

6. Press the start button on the starter and a small amount of delay is normal.

7. Check the rig for excessive resistance or abnormal sound.

8. Check whether the operating handle is normal, whether there is oil leakage in each joint, and observe whether each pressure gauge is in the normal parameter range.

9. Check if the chuck and gripper switch are flexible. Whether the action is accurate.

10. Check if each pipeline is connected and there is no leakage.

11. Special working conditions

During the construction process, special working conditions, such as stuck drills, top drills, broken rods, etc., are often encountered. If the first time is not processed in time, the following measures will be taken:

(1) When there is a buried drill and a stuck drill, firstly pull the drill with the maximum pull of the drill and the feed force.

(2) When the gas pressure is too high and the top drilling occurs, never allow the front clamp of the drilling machine to open at the same time as the power head, and the removal of the one-way valve drill pipe may cause danger. The lifting of the working condition is to withdraw the drilling tool for a short period of time, then stop drilling, continue to drill after the gas is released, and never forcibly drill.

(3) When a broken rod accident occurs, the special working condition processing equipment will be used, and the combination of the drill pipe + the fishing cone (inside and outside) will be sent to the broken rod for rotary tapping, and the joint will be broken after the connection. The drill pipe raises the bottom of the hole. When tapping with a fishing cone, the mud pump is cooled by opening the water supply. It is usually preferred to use a salvage male cone.

(4) When drilling is close to the fault, observations should be strengthened to ensure safe and smooth passage through the fault.

Six, operating measures

1. When designing the drilling plan, avoid the pressure relief hole and geological drilling. If it is really impossible to avoid, report to the relevant departments in advance and formulate feasible plans and measures.

2. During construction, pay attention to avoiding bolts, anchor cables and drill pipes and drill bits falling in the coal body to prevent damage to the equipment.

3. When arranging the drilling site, strictly implement standardized and standardized management. The technical manuals such as operating procedures and safety technical measures shall be placed on site; the technical parameters of the drilling rig and the power supply system diagram shall be hoisted; and the drilling and rig technicians shall prepare the operation and maintenance records, and the rig operation and maintenance personnel shall fill in as required.

4. Before powering on, the rig driver checks all the operating handles to ensure that they are at “0” position. After starting the machine, idle the test machine for 1 minute to observe whether the pressure, temperature, sound, rotation, etc. are normal.

5. During the drilling process, it is forbidden to work and stay behind the rig. When passing, it should be more than 1.5m away from the rig; in any case, no personnel are allowed to stay before the open drilling.

6. Workers should wear dust masks, eye masks, earplugs and other labor insurance products correctly; when working near rotating parts such as rear grippers, drill pipes, mixers, etc., it is strictly forbidden to wear gloves and tie the cuffs.

7. Water must be injected before drilling, and water can be drilled after returning to the borehole; drilling dry holes is strictly prohibited. When there are a lot of rock powder and coal slag in the hole, the amount of water should be increased, the time of pre-filling should be prolonged, and it is determined that the hole can be drilled after punching the hole.

8. When the drill bit starts to drill, the pressure should not be too large. It is necessary to gently press the slow drill to prevent the chipping or destroying the shift gear. When the drill bit is down to the bottom of the hole, the pressure can be gradually increased after the working condition is stable.

9. During the drilling process, the driller should carefully observe the operation of the rig at all times. When the coal seam is soft, the speed should be increased, the water pressure should be increased, and the drilling method should be adopted to prevent the collapse and the drilling. The accident occurred.

10. During the drilling process, the rig operator pays close attention to the pressure gauge display, making timely and accurate judgments on the geological changes, and reporting and adjusting as soon as possible. If necessary, replace the core drill bit, sample and analyze the drill hole, and develop a further drilling plan.

11. Drilling assistants should ensure that the drill pipe is placed correctly and easy to extract; before installing the drill pipe, check the drill pipe to ensure that there are no blockages and cracks; at the same time, check whether the thread on both ends of the drill pipe is lubricated, whether it is damaged or not, and prevent it from falling. Coal body; when connecting and removing the drill pipe, the drilling mode valve must be closed to prevent accidental injury.

12. When replacing the drill bit, it should be noted that the hole diameter matches the drill bit diameter to avoid jamming the drill bit. When temporarily stopping drilling, the drill bit should be retracted from the bottom of the hole to prevent the coal rock powder from getting stuck in the drill pipe; when the drilling time is long, the drill pipe should be pulled out.

13. Before drilling the drill, first rinse the hole with clean water, and drain the coal and rock powder in the hole until the return water becomes clear.

14. During the drilling process, all staff must work closely together, and the operation should be light and stable. Do not jerk or hard pull, and do not overload the work.

15. Set a sewage dam around the rig to block sewage and coal slag, and clean and drain the drainage ditch in time to ensure clean around the rig.

16. If the rig fails, you need to find out the cause. After the repair is completed, you can start it again. It is strictly forbidden to force the machine to boot.

17. Before the drilling machine is built, the necessary auxiliary support must be added according to the actual situation before and after the drilling machine, and the auxiliary support should be tightened against the coal wall of the roadway to ensure that the drilling machine does not move before and after.

18. When handling the accident in the hole, when the strong lifting is required, the rig body must be reliably tightened against the coal wall of the roadway.

19. Before each class is drilled, it is necessary to check whether the upper and lower supports are loose, or the top plate does not work hard and finds timely treatment.

20, when operating the rotary drilling rig, must be on duty on-site command, there are special care cables, liquid pipes and so on.

21, drilling construction should pay attention to the following points

(1) During the drilling process, it is necessary to pay attention to the water pressure, the amount of water, and the condition of the hole returning to determine the condition of the hole. When encountering soft coal, the pressure and instability, the drilling speed is obviously faster than the original, and the return slag is increased. At this time, the drilling must be stopped. If the pressure gradually increases, the returning water slag condition does not improve, then the drilling is stopped.

(2) During the drilling process, the situation during the drilling process is recorded in detail. (including water pressure, propulsion pressure, lifting pressure, roof condition)

(3) The handover must be completed at the drilling site, and signed by the captains of the handover team. The possible failures of the actual drilling situation and the problems that should be paid attention to during the drilling should be clearly explained to the person in charge of the shift. May know about the situation in the previous class. Provide the basis for the construction of this class.

22. When the drilling construction reaches the design depth, perform a hole cleaning to ensure smooth and smooth drainage. After the drilling is completed, the drill pipe will be withdrawn, placed neatly, the hole safety device will be removed, and the next hole will be prepared.

23. After the drilling is completed, a special person should be set up to seal the hole with a sealing pump.

24. If you need to climb the job, you must have special tools or platforms (the platform must be stable).

Nine, maintenance measures

1. Before the inspection, the electrician with the shift should perform the power-off operation; suspend the safety warning sign and lock it.

2. Before repairing the internal parts such as the electric control box and junction box, the follow-up electrician needs to cut off the upper level power supply, hang the safety warning sign, and arrange special care. Before opening the cover, first check the gas concentration within 20m around the device, and when it does not exceed 0.5%, the cover can be opened.

3. Before repairing and replacing hydraulic components such as filters, valves, pumps, and liquid pipes, the maintenance workers must first relieve the relevant hydraulic lines.

4. When replacing large parts and lifting work, strictly follow the installation technical measures, and require the binding position to be reasonable, and the lifting tools meet the requirements.

5. After the overhaul is completed, the maintenance workers need to tighten the bolts everywhere, the hydraulic components are installed correctly and reliably, the hydraulic pipelines are placed in an orderly and reasonable manner, and the whole machine meets the requirements of drawings and specifications.

6, the follow-up electrician checks the cable placement and hanging conditions every time, the requirements: neat, in line with the regulations.

7. When disconnecting the power supply, it is necessary to apply for a blackout application ticket. The special person is responsible for stopping the power transmission, strictly implementing the system of stopping the power transmission; hanging the “many operation, no power transmission” sign on the power failure switch; after power failure, experience electricity and discharge, Connect the ground wire to the rear of the ground wire. When wiring, you must first connect the load side and then the power supply side. When disconnecting the line, you must first remove the power supply side and then remove the load side. When disconnecting the wiring, it must be operated by a full-time electrician to reliably cut off the upper-level power supply and send someone to take care of it.

8. When relocating equipment, it should be lightly lifted to avoid damage to equipment or injury; it is strictly forbidden to electrify and repair electrical equipment, and it is strictly forbidden to drag and drop cables to prevent electrical equipment from exploding.

9. For different types of grease, special oil cans, oil extractors, funnels, etc.; when refueling or oil change, it is necessary to ensure that all processes of grease are clean and free from pollution.

10. Perform daily, monthly and quarterly inspections on the rig in strict accordance with the instructions and maintenance cards. When arranging the work of the maintenance class, sufficient maintenance time should be guaranteed.

Ten, prevent the drill pipe measures

1. Strengthen inspection, find the bad drill pipe in time, and recycle the well in time.

2. It is strictly forbidden to reverse during the drilling process.

3, with the team cadres to strengthen supervision, drillers operate according to the chapter, do not distract, do not rush.

4. When the conditions in the hole are not good, slow down the speed, strengthen the washing hole or adopt other safe and effective construction schemes; when the conditions are bad, immediately pull out the drill pipe and stop reporting.

5. When there is a sudden drop in pressure and other suspected drill pipe conditions, stop immediately and report in time.

XI, safety points

1. The operation, maintenance and maintenance personnel of the crawler drilling rig need to be trained; at the same time, after passing the technical qualification certification of the manufacturer and the standardization examination of the team and obtaining the “Justmark Certificate”, they will be certified.

2. The operation, maintenance, maintenance, lubrication and maintenance of the crawler drill must be carried out in strict accordance with the provisions of the manual, and fill out the technical form as required.

3. Enter the job site, strictly follow the team cadre and team leader to strictly implement the knock-on top system, carefully check the support situation within the scope of work, and find hidden dangers, must first deal with it, confirm the safety before working.

4. The management of electrical equipment is listed and operated by a full-time electrician.

5, the cable must be hung on the cable hook, and the installation of the gas pipeline can not carry out the cable hanging, if both sets have gas pipeline, the hanging cable should be more than 300mm from the gas pipeline.

6. If drilling gas is found to be abnormal during drilling, water pressure in the borehole, increase in water return, abnormal sound in the coal body, external movement of the coal body, slight vibration of the coal surface, top clamp and nozzle hole, working surface If the slag is abnormal, it must be stopped immediately and immediately reported to the mine dispatching room; it is strictly forbidden to pull out the drill pipe.

7. If the rig or drill pipe is found to have abnormal sound, stop drilling immediately to prevent the card from being drilled, and find out the cause and process it before proceeding.

8. When the drilling rig is running, non-workers are strictly prohibited to stay or carry out parallel operations within 5m of the working place.

9. When the rig is running, it is strictly forbidden to touch the rotating parts by hand or other parts of the body and other tools. When re-drilling, it must be ensured that the auxiliary staff and other personnel have left the equipment.

10. When drilling, you should go slowly at a constant speed, carefully observe the amount of water returned by the hole, find that the water return is not smooth or the rig does not supply water, immediately retreat the drill pipe, and it is strictly forbidden to dry the eye; after returning to the water, the hole can continue to drill.

11. During the drilling, all operators must observe the top and help the situation at any time to prevent the top, the piece from hurting or damaging the machine.

12. When the abnormal situation of the working face needs to be retreated, the team leader and the team leader should immediately organize the evacuation of the personnel along the disaster avoidance route and report the situation to the dispatching room at any time.

13. When there are abnormal noises (squeaky thunder), coal wall displacement, frequent coal cannons, etc., the site personnel immediately stop the operation and report to the mine dispatching room. If there is a continuous upward trend or the gas concentration exceeds the limit, it must be Turn off the power immediately and evacuate to a safe place.

14. When the site encounters geological structures and abnormal signs of gas emission, special safety technical measures must be formulated to release gas pressure.

15. When you encounter the top drill and the drill, you must stop drilling a shift. After the gas is released, you can start the work again.

16. The floor of the roadway should be flat and free of coal or rock blocks to prevent the rig from moving.

17. When walking or transporting materials through the damper, it is forbidden to open two dampers at the same time or open a damper for a long time to prevent the wind flow disorder.

18. After the drilling is completed, the hole should be sealed in time.

19. Before starting a new drilling, use a tile detector to monitor the gas concentration. For areas where the gas concentration cannot be controlled, the tile inspector must measure on site.

20, before the maintenance, the follow-up electrician first cut off the power supply, suspend the power failure warning sign, the team leader sent a special person to look after. After the completion of the overhaul, the inspection and approval of the cadres of the team will be carried out, and the electrician can send power to conduct the test operation.

21. When repairing and maintaining the work, it is necessary to strictly follow the measures and operating procedures. After the repair is completed, fill in the repair card as required, and problems will occur and be reflected in time.

22. Follow the team cadres and team leaders to coordinate on-site command and safety supervision to ensure safe and efficient construction. If an abnormality is found, report it to the mine dispatching room and the team duty room immediately, and take appropriate and effective measures. Confirm the hidden dangers and get the consent of the mine dispatching room and the team duty room before you can work again.

23. When there is a gas abnormality and other factors affecting the safety of the system, the team duty room should be notified at the same time.

12. Monitoring measures

1. The gas field must be equipped with a gas sensor and carbon monoxide sensing. A gas sensor should be installed 30 cm upward from the orifice. Anyone is strictly prohibited from destroying the monitoring equipment to ensure timely and effective monitoring.

2. The inspector of the tile must conduct detailed gas and carbon monoxide inspections of 20 meters near the drilling rig according to the specified number of times. . . .

3. The probe used should be inspected regularly according to the regulations, and the use, calibration, replacement of the account should be established, and two spares are guaranteed.

4. The probe setting alarm value must be less than 0.8%.

5, the team and the team leader must carry a portable tile detector, display readings below 0.8% before they can work.

6. When the gas concentration of the working place reaches 0.8% or the concentration of carbon monoxide reaches 24ppm, stop the operation immediately, withdraw the personnel, report to the dispatching room and the team duty room, and wait for the instruction at the designated place.

7. During the transportation and construction process, it is strictly forbidden to damage the gas pipeline and other ventilation and extraction facilities to avoid gas accidents.

8. Construction materials should be piled up neatly by the lanes and must not affect ventilation.

9. The Tashan Mine must provide a road map for avoiding fire, avoiding gas and avoiding water. Operators must be familiar with the downhole route.

XIII. Other notes:

1. The team leader should report to the duty room regularly and drill the footage, and abnormal situations and holes should be reported at any time.

2. Strictly implement the interconnection security system and do a good job in mutual insurance and joint guarantee.

3. All operators must be organized to study this measure carefully and arrange the exam. Familiar with the operation regulations, safety measures and disaster avoidance routes, and only after passing the examination, can you work on the job.

4. All operators and materials must comply with the relevant pedestrian traffic regulations of the Tashan Mine.

5. Others are mentioned in the section, strictly in accordance with the "Safety Regulations for Coal Mines" and other relevant regulations, and strictly follow the instructions of the manufacturers.

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