winches, wire ropes, pulleys, drill bits, mud pumps, water pumps and electrical equipment.
mechanical drilling is used. after the drilling rig is in place, the drilling rig and its supporting equipment, such as hoist, wire rope, pulley, drill bit, mud pump, water pump and electrical equipment, should be thoroughly inspected, and drilling can only be started after the lubrication parts are refueled and qualified. Before using the hydraulic and electric reverse circulation drilling rig, check the hydraulic oil and lubricating oil, and tighten and close the cock after filling the oil.
when impact drilling is used, the drill bit, hoist and steel wire rope should be matched, the drill frame should be firmly connected, and the performance of steel wire rope should meet the requirements, with a safety factor of not less than 12. During the impact, always check the damage of wire rope, and replace it immediately when the broken wire has exceeded 5%. ?
Extended information:
Relevant requirements for bored pile construction stipulate:
1. For night construction, pay attention to several measures such as lighting safety, traffic safety, overweight safety and electricity safety. The leaders on duty are present during night construction, especially when pouring underwater concrete, the project leaders must be on duty. ?
2. When faults occur in drilling and need to be eliminated, it is forbidden for operators to go down into the hole to deal with the faults. Under special circumstances, if they have to go down into the hole, divers or people with underwater fishing experience should go down into the hole to deal with the accidents in the drilling with liners or other protective facilities. ?
3. Strictly control the mud density and sedimentation at the bottom of the hole when forming the hole. The mud must be completely removed during the first hole cleaning, and the conduit should be lifted slowly during the concrete pouring process, especially at the top of the pile. It is forbidden to lift the conduit greatly.
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