1. When mechanical drilling is adopted, after the drilling rig is in place, the drilling rig and the supporting equipments should be fully inspected, such as winches, wire ropes, skids, drilling bits, mud pumps, water pumps, and electrical equipments, etc., whether they are in good condition and normal, and lubricated parts should be checked and passed after refueling before drilling is allowed to start.
2, the use of hydraulic electric positive and negative circulation drilling rig before, should be followed by checking the hydraulic oil, lubricating oil situation, after filling the oil, the plug should be tightened, shut tight.
The rotating parts of the drilling rig belt must be equipped with protective cover, and the power line used should use rubber waterproof cable.
3, all types of drilling rigs in operation, should be operated by the machine or the person in charge of the machine management designated operator, no one else shall arbitrarily boarding, the operator in the shift, shall not be unauthorized to leave the post.
4, each time the removal and replacement of the drill pipe or drill bit, to quickly and quickly, and to ensure that the connection is secure. Strictly prevent tools, iron and nuts, etc. fall into the hole, if necessary, the hole should be covered.
5, the use of impact drilling, the choice of drilling cone, winch and wire rope should be matched, the drilling frame is firmly connected, the performance of the wire rope should be adapted to the requirements of the safety factor of not less than 12. Impact process, we should always check the damage of the wire rope, when the broken wire has more than 5% must be replaced immediately.
6, the use of positive and negative circulation and submersible drilling rig drilling, the cable line to strictly check the cable lead line and the power cable joints, must be tied firmly according to the specified requirements.
7, the use of submersible drilling rig drilling, the cumulative operation of 50 hours, to check once the two ends of the closure of the situation, drilling speed should be based on geological changes, appropriate control to ensure safety.
8, the drilling of faults need to be removed, it is strictly prohibited for operators to go down the hole to deal with the faults, in special circumstances, must go down the hole, should be in the borehole with a protective tube or other protective facilities, by the dive personnel or underwater salvage experience to deal with accidents in the borehole.
9, the use of mud in the borehole, should be set up mud circulation purification system, pay attention to prevent or reduce environmental pollution.
10, the drilling rig stop drilling must be raised out of the hole, placed on the drilling frame, is strictly prohibited to stay in the hole for too long.
11, the use of punch or impact drilling, should prevent collision with the barrel, hole wall and hooked barrel bottom edge, lifting, should be slow and smooth.
12, drilling process, there must be a person, according to the specified indicators, to maintain the height of the water level in the hole and the consistency of the mud, to prevent the collapse of the hole.
13, lifting steel cage, according to its length and lifting height to set the flat beam. Welding, pay attention to the cable shall not touch the water to prevent leakage. Straight lifting, there is a person in command. Pay attention to the lifting range of high and low voltage wires and other air obstacles.
14, filling underwater concrete, should be set up platform, chute, conduit and lifting equipment, after a full inspection to confirm the safety before construction.
15, filling concrete, such as the use of deceleration funnel, funnel should be hung firmly, and should be attached to the insurance rope.
16, night construction, pay attention to lighting safety, traffic safety, overweight safety, electricity safety measures, night construction with the presence of the duty leader, especially in the filling of underwater concrete, there must be a project leader on duty.
17, the drilling rig drilling holes removed to pay attention to the dismantling and displacement of the tower, especially with the crane to pay special attention to the location of the lifting point, choose to ensure the safety of lifting.
18, the mud pool should be given closed, and there are signs to indicate, to avoid people, especially children to the pool to avoid danger.
19, bored pile pit to be surrounded by guardrail, and with more conspicuous marking, to prevent people and machinery fall into the pit.
20, the pit due to rain water storage, in order to prevent falling into the water, the water should be pumped out in a timely manner, and will be around the pit with barbed wire blocked.
21, unbroken drilled pile construction should always pay attention to traffic safety, preventive signage, signposts, must be placed in accordance with the regulations, night construction to set up lights.
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