1、 After entering the construction site, we should pay attention to the following safety precautions: 1
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After the drilling rig is in place, we should conduct a comprehensive inspection on the drilling rig and its supporting equipment, such as whether the winch, wire rope, drill bit, mud pump, water pump and electrical equipment are in good condition; the installation of the drilling rig must be stable and firm, and the drilling frame should be equipped with diagonal bracing or support Wind rope
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The rig platform and operation platform, especially the water rig platform, should be set up firmly, and fully paved with scaffold board, with protective railings and walkways
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Debris and obstacles should be removed in time
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2
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When the drilling rig is in operation, the operator designated by the machine shall operate it
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Other people are not allowed to board the machine for operation, and the operator shall not leave the post without authorization during operation
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3
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Every time the drill pipe and drill bit are removed and replaced, the connection shall be fast and reliable
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In order to prevent tools, iron parts and nuts from falling into the hole, a protective cover should be added at the hole
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4
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The wire ropes on the winch sleeve shall be arranged in order
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It is strictly forbidden for the operator to cross over the hoisting wire rope
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The wire rope on the winch drum shall not be put out completely
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At least 3 circles shall be reserved
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It is strictly forbidden to wind the wire rope by hand
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When the drilling rig is drilling in, the transmission of the winch shall be stopped first, and then it can be started
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5
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When using forward and reverse circulation drilling, the cable should be strictly checked
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When sliding the drill floor, the cable and water pipe should be prevented from squeezing
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During the operation, the cable damage should be dealt with immediately, and the drilling speed should be controlled according to the geological change
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6
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In the process of drilling, a special person must be assigned to maintain the height of water level in the hole and the consistency of mud according to the specified index to prevent hole collapse
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The mud used in drilling should be equipped with mud circulation purification system to prevent environmental pollution
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7
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When the drilling rig stops drilling, the drill bit must be lifted out of the hole and placed on the drilling frame
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It is strictly forbidden to stay in the hole for too long
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When there is a fault in the drilling and it needs to be eliminated, it is strictly forbidden for the operators to go down the hole to deal with the fault
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8
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If the embedded casing is not drilled or the pile casing is not pulled out, the casing cover shall be added or the safety net cover shall be laid; obvious warning signs and protective railings shall be set in the mud pit; after the pile foundation construction is completed, the mud shall be cleaned in time to prevent environmental pollution, and the mud pit shall be backfilled
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9
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Relevant safety measures shall be taken for drilling construction and sinking of reinforcement cage under high-voltage line
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No overhead obstacles are allowed within 2m above the top of drilling tower and crane mast of reinforcement cage
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The lifting and sectional extension of reinforcement cage shall be controlled stably
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During thunderstorm, operators are not allowed to stay under the rig to prevent collision, electric shock and other accidents
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2
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Employees entering the construction site must wear safety helmets, slippers or barefoot are prohibited
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When working at height of more than 2m (including 2m), they must wear safety belts
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When welding steel bars, they should abide by the safety operation regulations for electric welding
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In case of strong wind and fog, they should stop working
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When the wind speed exceeds level 7 or there is a strong typhoon alarm, they should stop the pile machine downwind If necessary, the pile machine should be put down on the ground, and there should be no high-voltage wire within 5 meters around the pile machine
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The distance from the field output line should also comply with the relevant safety regulations
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III
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three level power distribution and two-level leakage protection are adopted in the construction site
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The iron shell of the electrical equipment must be protected and grounded
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When the work is stopped for one hour in the shift, the relevant power switch box shall be powered off and locked, and the power distribution device not used for the time being shall also be powered off and locked
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220 V lamps and lanterns shall be used for outdoor lighting
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Protective wires, flower wires and other wires shall not be used to connect lamps and electrical equipment on the construction site
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Black cables must be used
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Simple iodine tungsten lamps shall not be used for site photo lamps and lanterns
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The outdoor hanging height shall not be less than 3 m and the indoor height shall not be less than 2.4 M
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In thunderstorm days, the drilling rig should stop operation to prevent the construction personnel from being struck by lightning
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If you need more knowledge about tunnel, road and bridge, please pay attention to WeChat official account of “safety in construction of track Luqiao”.
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