Detailed rules for safety supervision of bored pile construction?

The Detailed Rules for Construction Safety Supervision of Bored Piles is formulated to better handle the actual situation and ensure the safety of construction workers, and every detail is crucial. Zhong Da Consulting Company will introduce the safety supervision rules of bored pile construction to you.

1 For mechanical transportation of drilling holes, the bearing capacity of bridges along the line must be checked in advance, and if necessary, it should be loaded in sections to adapt to the bearing capacity of the bridge, or the bridge should be properly reinforced to ensure transportation safety. 2. When the drilling rig arrives at the construction site for disassembly, the workers must wear safety helmets. 3. During rig assembly, the self-stability of the assembled parts should be maintained at all times, and windproof ropes should be added when necessary, and special personnel should be assigned to command and take charge of safety inspection. 4, drilling machinery in place, to deal with the drilling rig and supporting equipment to conduct a comprehensive inspection. Rig installation must be smooth and firm; The drilling rig should be equipped with poles, cables or cable wind ropes. 5. When percussive drilling, drill bit, hoist and wire rope should be reasonably configured. When the wire rope and the drill bit are fixedly connected by rope clips, the number of rope clips should match the diameter of the wire rope. In the process of impact, the slack of wire rope should be properly controlled. 6. The cables used by forward and reverse circulation drilling rigs and submersible drilling rigs should be inspected regularly, and the joints must be tied firmly to ensure water tightness; For places that are often soaked in water and mud, they should be erected overhead. When moving the drilling rig, don't squeeze cables and feng shui pipelines. 7. All construction power lines, lines, connectors, power distribution cabinets and sockets shall conform to the relevant industry safety electricity standards. 8, submersible drilling rig, generally after the completion of a bored pile to check the closure of a motor. Drilling speed should be controlled according to geological changes to ensure safe operation. 9. When the drill bit approaches the bottom edge of the casing, it should be lifted steadily at a reduced speed, and it is forbidden to collide with the bottom edge of the casing and hook the casing. 10, drilling mud, mud circulation purification system should be set up, and pay attention to prevent or reduce environmental pollution. 1 1. When the drilling rig stops drilling, the drill bit must be lifted out of the hole, put on the derrick and not left in the hole. 12. If the embedded liner is not drilled or the pile liner is not pulled out, the top cover of the liner should be added or a safety mask should be placed. 13. During the whole construction process, such as drilling, drilling welding, pipeline laying and reinforcing cage welding, all types of work must wear corresponding labor protection articles. 14. Before hoisting the reinforcing cage, the welding quality of the reinforcing cage should be comprehensively inspected, and the welding quality of the reinforcing cage meets the requirements of relevant specifications. 15. Before hoisting the reinforcing cage, check whether the hoisting points of reinforcing bars are symmetrically arranged to prevent the reinforcing cage from deviating during hoisting. 16. Before hoisting the reinforcing cage, check whether the steel wire rope and fittings conform to the regulations, and whether all safety protection devices and indicating instruments are complete and in good condition. 17, reinforcing cage hoisting needs unified command by special personnel, and actions should be coordinated; Irrelevant personnel are strictly prohibited from entering the area affected by the hoisting of reinforcing cage. 18, when the reinforcing cage is hoisted, all personnel on site must wear safety helmets. 19. When the crane is tilted and the legs are unstable during the hoisting operation of the reinforcing cage, the heavy objects should be immediately lowered to a safe place, and it is forbidden to brake during the lowering process. 20. In case of severe weather such as gale or rainstorm, heavy snow and fog above level 6, the hoisting operation of reinforcing cage should be stopped.

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