1. Matters needing attention in pile foundation construction:

1, all operators and workers must wear safety helmets, do not wear slippers to work, and do not get drunk.

2, special equipment operators must hold relevant certificates, special equipment operation certificate copy should be posted in a prominent position on the rig.

3. Before the drilling rig enters the site, the construction site must be leveled and filled to ensure that the drilling rig does not tilt or overturn under normal operation.

4. Before the drilling rig starts operation, it is necessary to check whether all parts are in good condition, whether the brakes are sensitive and whether the wire rope is broken. Drilling operation can only be carried out after inspection is qualified. During the drilling operation, the drilling rig should be maintained regularly.

5. The power distributor of multi-purpose distribution box for drilling rig should be intact, locked and managed by special personnel. The protective grounding of all mechanical equipment must be firm and reliable, and the leakage circuit breaker is sensitive.

6. Mud pit must be excavated at the location designated by technicians. Safety protective railings must be set around the mud pit, with the height not less than 1.2m, and relevant safety warning signs should be hung.

7. Don't operate under the hanging hammer when burning hammer, measuring hole depth and taking slag samples. Before starting the operation, the heavy hammer must be landed.

8. When the drilling rig fails and needs maintenance, first lower the hammer to the ground, then cut off the power supply and then carry out maintenance.

9. Completed piles should be backfilled in time to prevent accidents. Piles that cannot be backfilled in time should be closed with safety nets and warning signs should be hung.

2. Power safety:

1, drilling rig construction must implement tn-s, three-pole distribution, two-pole protection, "one machine, one brake, one leakage and one box" regulations, and make safety warning signs for construction electricity.

2. The distribution box shall be managed by special personnel and maintained by special personnel. The signature of the discloser shall be signed by the discloser. Note: This form is made in duplicate, one for the team and the other for the team. Safety disclosure of bridge bored piles Pages: 2/3 Name of construction unit, disclosure of project name, disclosure of pile foundation of Huang Zhuang Bridge of China Coal Third Construction Project No.33 Engineering Office, disclosure time, year, month, year, type of work handover content 3. Three-core rubber cable must be used for lighting on site, yellow-green connection must be used to protect the zero line of lampshade, leakage switch should be installed, the handle should be insulated, the connection must be firm, and the installation position should be far away from inflammable and explosive articles.

4, it is forbidden to pull wires and electrical equipment. Non-working electricians are not allowed to engage in electrical work.

5. All mechanical equipment must be grounded.

6, distribution box, switch box should be installed correctly and firmly, mobile distribution box, switch box should be installed on a solid bracket. The height of the lower part of the fixed distribution box and switch box from the ground shall be greater than 1.3m and less than1.5m; ; The distance between movable type and the ground should be greater than 0.6m and less than1.5m..

3. Safety measures for steel processing plants:

(1) Requirements for the use of mechanical equipment: The mechanical equipment of the steel bar processing plant includes steel bar bender, cutter, straightener, electric welding machine and lifting equipment. Each equipment must be implemented in accordance with the equipment operation procedures, equipment operation procedures and safety signs must be complete, and all electrical equipment must be grounded. Safety regulations for welding: Before welding, first check whether the welding machine and tools are in good condition, safe and reliable. For example, whether the insulation between the electrode holder and the welding cable is damaged, whether the welding machine shell is grounded, and whether the welding machine contacts are in good contact. No work shall be started without safety inspection. The welding machine should be placed in a dry and insulated place.

1. Before use, check whether the insulation of the primary secondary line is good and whether there is a protective cover at the wiring. Whether the electrode holder is in good condition and whether the shell has zero protection. Make sure there is no problem before using it.

2. In wet working environment, in order to prevent electric shock, insulating shoes must be worn, and rubber plates or other insulating pads should be placed under your feet. It's best to change jobs between two wheels so as to look after or monitor each other.

3. During live working, for the sake of safety, the electrode holder shall not move the workpiece to be welded under the arm or hang the welding cable on the neck or neck.

4. When the welding joint is changed and the weldment needs to be connected to the secondary circuit, replace the safety device. When the welding machine breaks down and needs maintenance, or when the welding machine moves away from the work site, the power supply must be cut off after the work is completed or temporarily left the work site. (2) Personnel training: Workers must receive pre-job training before entering the site to improve the safety awareness of operators, who should consciously abide by the basic requirements of site safety; On-site technicians timely investigate and eliminate potential safety hazards to ensure safe and orderly on-site construction. The signature of the discloser shall be signed by the discloser. Note: This form is made in duplicate, one for the team and the other for the team.

Four, reinforcing cage hoisting safety:

1, the reinforcing cage must be made in strict accordance with the requirements of the drawings, and the reinforcing ribs of the reinforcing cage must be welded firmly and reliably to ensure that they will not be damaged during the hoisting process, and can only enter the hoisting process after passing the inspection by the quality inspection engineer and supervision engineer.

2. Before hoisting the reinforcing cage, handover inspection must be conducted. On-site person in charge, foreman and technician shall organize rebar production ZuoYeDui (or operator) and hoisting ZuoYeDui (or operator) to conduct on-site handover inspection. Lifting ZuoYeDui should strictly check the welding of steel bars and the lifting points of steel cages. After passing the inspection, both parties shall sign for confirmation. The quality and safety of the confirmed reinforcing cage shall be the responsibility of the hoisting operation team. Without inspection, it is forbidden to lower the hole of the reinforcing cage, such as the thickness of protective layer and other accessories that do not meet the technical requirements. Otherwise, the hoisting operation team (or operator) will take full responsibility. 3. The crane must pass the local safety performance inspection, and the crane operator must hold relevant certificates.

4. Before hoisting, the safety of wire rope and spreader must be carefully checked, and the safety insurance factor must be greater than 3.5 times of the hoisting weight. If the wire rope is knotted, twisted, broken, corroded and worn by more than 65,438+00%, it must be replaced.

5, lifting point selection must be carried out in strict accordance with the technical disclosure. When the technical disclosure is unclear, the lifting point should be selected on the main reinforcement within the range of13 at the top of a single reinforcing cage, and the free length of the reinforcing cage above the lifting point should not exceed 3m.

6. Before the reinforcing cage is lowered into the hole, it must be tested by the hole finder and meet the technical requirements before it can be hoisted into the hole. The lower hole of the reinforcing cage shall be hoisted in sections, and the length of each section shall not exceed the effective hoisting height of the crane, and shall not exceed 15m.

7. Due to hoisting, welding and other reasons, the collapsed reinforcing cage can't be lowered. When it needs to be hoisted out for inspection or hole cleaning, it must be hoisted out after sectioning and cutting.

8, crane hoisting operations, there can be no personnel stay within the radius of operation.

Verb (abbreviation of verb) field management:

1 During pile foundation construction, site safety management personnel must intensify the investigation of potential safety hazards on site to ensure safe and civilized construction on site.

2. The above related measures should be strengthened in the construction process. If the above-mentioned safety problems occur many times in the construction process, and the rectification is not carried out or the rectification is not in place, the corresponding punishment measures will be given on site.