Drilling rig construction safety precautions

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1. Building the airport foundation
1.1 The airport foundation should be flat, firm, stable and applicable. the fill portion of the rig base,
Must not exceed 1/4 of the tower base area.
1.2 When building the airport foundation on the hillside, when the rock is firm and stable, the slope should be less than 80°;
When the formation is loose and unstable, the slope should be less than 45°.
1.3 There should be drainage measures around the airport. In valleys, creeks, low-lying areas or in rain
During construction in season, the foundation of the airport should be built with a dam or flood control facilities.
1.4 The airport foundation should meet the requirement that the horizontal distance between the edge of the borehole and the underground cable line is greater than 5m,
The horizontal distance from underground communication cables, structures and pipes should be greater than 2m.
2. Installation, disassembly and relocation of drilling equipment
2.1 The installation and disassembly of the rig shall comply with the following regulations:
a Before installing and dismantling the rig, deal with the rig components, tools, ropes, pick rods and lifting and lowering
Strict inspection of racks, etc. .
b The installation and dismantling of the rig should be carried out under the unified command of the installation captain and the captain.
The staff should be arranged reasonably, and the operation should be carried out in strict accordance with the operating rules.
c When installing and dismantling the drilling tower, the lever used for lifting the tower should have sufficient strength. dismantle
The unloading tower should be disassembled layer by layer from top to bottom.
d It is forbidden to wear nails or hard-soled shoes on the tower.
e Installation and dismantling of the drilling tower should be laid with a worktable, and the length and thickness of the tower tabletop should meet the safety requirements.
f It is forbidden to install and disassemble the drill at night or in strong winds, thunderstorms, fog, snow and other weather above level 5.
Tower work.
2.2 The installation and disassembly of the drill stand should comply with the following regulations:
a. Raising and placing the drill stand should be carried out in an orderly manner under the unified command of the captain.
b Before erecting or laying down the drill stand, the ground anchor should be firmly buried.
c When erecting or lowering the drilling frame, the operator should leave the lifting and landing range of the drilling frame
Control the bandage.
d Diagonal handles should be installed between the legs of the drill stand.
e Steel pipe drill frame should be made of seamless steel pipe, and the drill frame legs should be sleeved on the outside of the connection.
Steel tube hoop reinforcement.
The distance between the outer edge of the drill frame and the edge of the transmission line should be in accordance with the table
1 of the regulations:
2.3 The installation of drilling rig equipment shall comply with the following regulations:
a Various mechanical installations should be stable and level. The transmission wheel should be aligned longitudinally and horizontally flat.
The drive shaft and drive wheel should be kept level.
b When installing the drilling rig, the tangent point of the front wheel of the derrick crane, the center of the vertical axis of the drilling rig and the center of the drilling
Should be a straight line.
c Various protective facilities and safety devices should be complete and intact, and exposed rotating parts should be provided with
Install a reliable protective cover or protective railing.
d Electrical equipment should be installed in a dry, clean and well-ventilated place. .
2.4 Equipment handling shall comply with the following regulations:
a When the equipment is transported by a motor vehicle, there should be a special person to command; when loading and unloading manually, there should be enough
Strong springboard; when hoisting with a crane or hoist, the wire rope, rope clip, hook and hanger legs should be
b When more than one person lifts the equipment, there should be a special person to command and cooperate with each other.
c When the overall migration of the light drilling rig is carried out, it should be carried out on a flat and short distance ground.
Tilt measures.
e Prohibit under high-voltage power lines and slopes exceeding 15° on slopes or on uneven and soft ground
Overall migration of rigs.
f When using lifting machinery to lift drilling rig equipment, the “Safety Regulations for Lifting Machinery” should be observed
3. Lifting drilling tools
3.1 Braking device, clutch device, lifter, traveling block and pipe twisting machine of elevator
And unscrewing tools should be flexible and reliable.
3.2 The use of wire ropes should comply with the following regulations:
a The safety factor of the wire rope should be greater than 7.
b When the lifter is at the orifice, the number of turns of the wire rope of the elevator drum shall not be less than 3 turns.
c. There should be no less than 3 wire rope fixed connection rope clips; the distance between the rope clips and the rope head should be greater than that of the steel wire rope
6 times the diameter of the wire rope.
d Steel wire ropes should be checked regularly; deformation, wear and broken wire ropes should be carried out according to the “Lifting”
Practical code for inspection and scrapping of mechanical wire ropes (GB/T5972-1986) scrapping standard.
3.3 The lift should operate smoothly. It is strictly forbidden to touch the wire rope during the lifting process.
3.4 The lifting device and lifting hook shall have safety interlocking device;
The incision for the introducer should be facing down.
3.5 It is forbidden to touch the core in the suspension drilling tool or the core in the inspection pipe by hand.
3.6 The operation of the pipe twisting machine, the pad fork and the twist fork should be operated by one person; the twist fork should be safe
3.7 It is forbidden to grab the pad fork or forcibly hold the drill pipe when the drill is running.
4. Drill into
4.1 Before drilling, the equipment, safety protection measures and facilities should be checked and accepted.
4.2 When the machine is rotating, it is forbidden to scrub, disassemble and repair the machine parts;
Passing objects across or over drive belts, rotating parts; do not wear gloves on belts or
Waxing; it is forbidden to use iron tools to pull, unload and hang the belt in the transmission.
4.3 When drilling, it is forbidden to support the high-pressure hose or faucet by hand. Repair high pressure hose or water
The faucet should stop.
4.4 When adjusting the gyrator and turntable, stop the machine for inspection, and put the shift handle in the neutral position
4.5 When the turntable drilling rig is drilling, it is strictly forbidden to stand on the turntable.
4.6 When reaming, sweeping off cores, sweeping holes or drilling in karst caves, loose and complex formations,
It should be operated by a flight crew leader or a skilled technician.
5. Handling of accidents in the hole
5.1 Before handling the accident in the hole, the components of the drilling tower (drilling frame), the crane,
Pulleys, wire ropes, rope clips, lifters, hooks, anchor screws, etc. .
5.2 When dealing with accidents in the hole, there should be a squad leader or a skilled technician to operate the lift, and set up
Instructed by special personnel; except for the direct operator, other personnel should evacuate from the danger area.
5.3 It is forbidden to use lifts, jacks or hanging hammers at the same time to pull out accident drilling tools in holes.
5.4 It is forbidden to forcibly pull out the accident drilling tool in the hole due to overloading.
5.5 When hitting the hanging hammer, an impact handle or other limiting device should be installed on the drill pipe at the lower part of the hanging hammer;
It is forbidden to hold, hold the drill pipe or hit the hoop; when manpower pulls the rope to hit the hanging hammer, it should be commanded.
5.6 It is forbidden to use the lift to lift the accidental drilling tool that is jacked up when using the jack-up rod.
5.7 Artificial anti-drilling tools are strictly prohibited from standing within the range of moving rods; it is prohibited to use chain clamps, pipe
Pliers Tools Anti-accident drilling tools.
5.8 The reverse drilling tool of the reverse drilling rig should be rotated at low speed and slowly.
5.9 Use wire rope reverse pipe drilling tools, and the connecting objects should be firm and reliable.
5.10 Drilling and blasting shall comply with the following regulations:
a Before going into the blasting cylinder, the hole diameter, hole depth and deflection should be detected.
b When sending the medicine bag into the drilled hole, it should be lowered slowly.
c Before blasting, the blasting hazard boundary should be determined, and blasting warning work should be done well.
6. Airport security facilities
6.1 Safety baffles shall be provided for the derrick type cranes; safety ropes shall be installed for the hanging cranes.
6.2 The high-pressure hose of the rig faucet should be equipped with anti-winding, anti-fall safety devices and guide ropes.
6.3 Reliable protective railings should be installed on the rig workbench. The height of the guardrail should be greater than 1.2m,
The thickness of wooden tray should be greater than 50mm or use anti-skid steel plate.
6.4 The tower ladder should be firm and reliable; the step spacing should be less than 400mm and the slope should be small
at 75°.
6.5 The laying of the airport floor should be flat, tight and firm; the thickness of the wooden floor should be greater than
40mm or use anti-skid steel plate.
6.6 The installation and use of the movable workbench shall meet the following requirements:
a Workbench should be equipped with brakes, anti-fall, anti-channeling, travel restrictions, safety hooks, hand
safety devices such as a locator.
b The chassis, column and railing of the workbench should be integrated.
c The worktable should be equipped with a hemp rope hand-pull rope with a diameter of 30mm or more.
d The lifting rope of the worktable and the guide rope of the heavy hammer should be made of steel wire ropes with a diameter of 9mm or more.
e The distance between the counterweight of the workbench and the ground should be greater than 2.5m.
f The activity workbench is allowed to take – – person every time.
g When working at heights on the workbench, the manual brake device should be locked before the work can be carried out.
6.7 The installation of dug ropes shall meet the following requirements:
a. The rigging rope should be made of steel wire rope above 12.5mm.
For drilling towers below b18m, 4 ropes should be set up; for drilling towers above 18m, 8 ropes should be set in two layers.
A bandage.
c. The installation of the bungee should be firm and symmetrical; the angle between the bungee and the horizontal plane should be less than 45°.
d The depth of ground anchor shall be greater than 1m.
6.8 Lightning rods or other lightning protection measures should be installed on the rig in the thunderstorm season and in the mine-falling area.
The installation of lightning rod should meet the following requirements:
a The lightning rod and the drilling tower should be separated by a high-pressure porcelain bottle.
b The air-termination device should be more than 1.5m above the top of the tower.
c The distance between the downconductor and the rig rope should be greater than 1m.
d The distance between the grounding electrode and the grounding of the motor, the orifice pipe and the anchor of the rope should be greater than 3m;
Grounding resistance, should be less than 150.
7. Airport electricity
7.1 The power distribution box and the lighting distribution box should be set up separately. .
7.2 For each drilling rig, a switch box should be set up independently to implement “one machine, one gate and one leakage protector”
7.3 Mobile distribution boxes and switch boxes should be installed on fixed brackets, and should be protected from moisture,
Rain and sun protection measures.
7.4 The electrical equipment of the airport shall be protected by fog or protective connection according to the requirements of the power supply system.
land. The resistance of the protective grounding electrical grounding electrode should be less than 40.
7.5 When using hand-held power tools, the “Management, Use,
Inspection and Maintenance Safety Technical Regulations (GB3787–1983).
7.6 For airport lighting, waterproof lamp caps should be used; lighting bulbs should be kept away from the surface of the tab
300mm or more.
7.7 When repairing electrical equipment, the power supply should be cut off, and a warning sign should be hung or a special person should be set up to monitor it.
8. Airport wind and flood protection
8.1 In windy weather, drilling operations should be stopped, and the following work should be done:
aRemove the tower coat and field tent.
b The drill pipe is lowered into the hole, and the impact handle is clamped.
C Check the firmness of the rig rope and ground anchor.
d Cut off the power supply, close and cover the electromechanical equipment.
eCap the orifice.
8.2 Before restarting the drilling operation after strong wind, check the rig, rope, mechanical and electrical equipment,
In case of power supply lines, etc., the drilling operation can be continued after confirming safety.
8.3 During the rainstorm and flood season, when construction is carried out in low-lying areas such as river beaches, ravines and valleys,
The foundation should be raised, and flood control facilities should be built.
8.4 Precautionary measures should be taken for construction in areas prone to landslides, collapses and debris flows.
9. Airport fire prevention and cold protection
9.1 For the machine, a fire prevention organization should be established; operators should master the use of fire-fighting equipment.
9.2 The airport should be equipped with fire extinguishing equipment.
9.3 For heating in the airport, the stove should be more than 10m away from flammable items such as oil, and the distance from the airport tower should be greater than 10m.
The cloth should be larger than 1.5m.
9.4 For construction in cold season, thermal insulation measures and heating facilities shall be provided.
9.5 It is forbidden to directly heat the oil with an open flame, and to bake the diesel oil pan.