I. Safety requirements
1. General requirements
1.1 The person entering the construction site must wear a helmet, and the construction operator should wear the necessary protective equipment.
1.2 mud pool must be equipped with protective facilities around the height of ≥ 1.2 m. After the completion of the hole, temporarily not the next process of the hole must be equipped with safety protection facilities or backfill with earth.
1.3 power supply of electrical equipment, should be installed in accordance with the provisions of the "construction site temporary power safety technical specifications" (JGJ46-2005) erection; electrical equipment are required to have good zero protection, and equipped with reliable electric shock protection device.
1.4 It is strictly prohibited to punch holes and hoist reinforcement bars under the high and low voltage overhead electric wires; when moving the pile driving machine, the bracket must keep a safe distance from the high voltage electric wires.
1.5 Distribution boxes and other power supply equipment should not be placed in water or mud, wire joints should be strong and insulated, and the first end of the equipment must be equipped with leakage protector.
1.6 After the installation of the pile driver is completed, it must be accepted by the security department before it is put into use.
1.7 In the whole process of construction, the safety operation regulations of the machinery should be strictly implemented, operated by specialized personnel, and the maintenance of the machinery should be strengthened. 1.8 The working platform must be regular and smooth, and the debris must be removed to prevent the staff from tripping and causing accidents when removing the conduit.
1.9 site unloading (mainly refers to steel and steel plate, steel pipe) before, must check the direction of unloading whether there is someone, in order to avoid personnel injuries. 1.10 Before conduit installation and concrete pouring, there must be a conduit card at the wellhead, a working platform (leaving the position of the conduit), and it is required to ensure the safety of personnel.
1.11 In case of heavy rain, fog and wind of more than grade six, the punching operation should be stopped, and when the wind is more than grade six, the rack should be put down on the ground. After the storm, a comprehensive inspection must be carried out to find problems and deal with them in time.
1.12 Operators should abide by the safety operation regulations of pile driving machine punching, and strictly prohibit unauthorized operation.
1.13 Pay attention to the civilized construction on site, the mud pool should be filled up in time for the mud pool which is not used; the mud pool which is being used should be strengthened to manage
management, not to allow the mud to overflow, and the slag which is fetched should be cleared away in time. Each sewage channel must have a sign, lighting equipment at night to prevent stepping into the mud, fall and injure pedestrians.
2. Requirements of construction process
2.1 Safety measures for pile driving machine and hole formation
2.1.1 After pile driving machine is in place, there should be a person commanding to fill the sleeper at the bottom of the machine, so as to make sure that the machine will not be tilted or dumped during the construction. At the same time, the pile driver and the supporting facilities should be fully inspected for safety. After the pile driver is firmly installed, set up inclined braces and wind ropes for the frame.
2.1.2 Before punching, check whether the lubricating oil of each transmission box is sufficient, whether the joints are firm, and whether the mud circulation system (centrifugal pump) is normal, and confirm that the performance of each component is good before starting the operation.
2.1.3 Before punching, check the wire rope for broken wire, corrosion, embroidery, etc. More than 10% broken wire should be scrapped. Check whether the wire rope latch is firm, whether the nut is loose.
2.1.4 In the process of punching construction, non-construction personnel are not allowed to enter the construction site, punching construction personnel shall not be too close to the drilling rig to prevent mechanical injury.
2.1.5 During the operation, the operator shall not leave the workstation or do other things without authorization. In the process of punching, if the frame shakes, moves or deflects, the machine should be stopped immediately to find out the cause and deal with it before continuing the operation.
2.1.6 When the pile driver enters the hole, it should closely monitor the situation in the hole, whether the frame is tilted, whether the connecting parts are loose, whether there is a sign of hole collapse, and correct the situation immediately.
2.1.7 During the movement of the pile driver, there should be a person who directs and supervises the cable to prevent the pile driver from crushing the cable.
2.1.8 after the hole, the hole must be covered with 5cm thick wooden board or bamboo plywood protection or pouring concrete, in order to prevent idle people or children to fall into the pile hole, the hole is not allowed to pile up heavy objects and materials.
2.2 Steel cage production, installation safety measures
2.2.1 Steel straightening site, prohibit non-construction personnel to enter, steel straightening before, before checking the straightening equipment components are safe and reliable. When descaling and welding the steel bars, the construction workers wear good protective equipment.
2.2.2 In the process of rebar cage processing, the phenomenon of throwing rebar at will shall not occur, and check whether there are people in the direction of rolling before rolling the completed section of rebar cage to prevent people from being smashed. Oxygen cylinder and acetylene cylinder in the outdoor safety distance is ≥5m, and have sun protection measures.
2.2.3 When lifting the steel skeleton, do a steady rise and fall, install securely before decoupling, strictly in accordance with the lifting operation safety and technical regulations for construction. 2.2.4 Reinforcing steel cage installation process must pay attention to: welding or mechanical connection is completed, must check the inspector's foot is retracted, to prevent the reinforcing steel cage when the foot is put down will be twisted or even bring the person into the hole of the accident occurs.
2.2.5 When the crane is working, no one is allowed to walk or carry out other operations within the range of rotation of the boom.
2.3 Safety Protection Measures for Concrete Filling
2.3.1 When filling concrete piles, the construction personnel shall divide the work clearly, unify the command, and do the quick and continuous construction to prevent accidents. 2.3.2 When filling concrete, the spreader of deceleration funnel, funnel and lifting ring should be stable and reliable. When pumping concrete, pipe support should be firm and special bracket should be set up, it is forbidden to tie on other bracket, and it is not allowed to hang heavy objects on the pipe.
2.3.3 The guard cylinder should not stand around people, to prevent inadvertent fall into the hole.
2.3.4 Conduit docking must pay attention to the position of the hand to prevent the hand from being pinched by the conduit.
2.3.5 During the concrete pouring process, when the concrete mixer truck is backing up, the conductor must stand in a fixed position that the driver can see, to prevent the conductor from planting in the process of walking and having a mechanical injury accident. There must be sleepers under the tires. In the process of reversing, there shall be no person behind the car.
2.3.6 During the process of hoisting and removing the conduit by the crane, each on-site personnel must pay attention to the position of the hook in order to avoid smashing the head.
2.3.7 Removing conduit personnel should pay attention to prevent wrenches, screws, etc. falling down. When dismantling the conduit, no other work shall be carried out over it. 2.3.8 Before continuing to pour concrete after lifting the conduit, it must be checked whether it is firmly padded or hung.
2.3.9 Mud pool, pile hole perimeter must be installed warning lights, hanging warning tape, set safety signs.
2.3.10 During the pouring of concrete, the mud should be recycled in time, and the mud should not be discharged on the road or in the sewage pipe.
3. Safety measures for construction electricity
3.1 Electricians must wear insulated shoes when working, and welders must wear protective glasses when working.
3.2 power lines should be used "three-phase five-wire" zero protection system, and to achieve "a machine, a gate, a box, a leakage protection", all mechanical and electrical equipment should be effectively protected from zero.
3.3 site lines must be set up in accordance with the provisions of the neat, not allowed to drag on the ground to prevent crushing, buried in the ground to set up signs, joints according to the standard bandage must be set up after the aerial or joints box, and waterproof measures, pile frame and chassis of all wires are forbidden to have joints.
3.4 Distribution box shall be installed leakage protection switch, the height from the ground is not less than 0.8-1.6m, there should be rainproof measures, and install the door lock.
3.5 rack on the distribution box electrical appliances should be intact, motor zero no less than two places, connecting the protective zero line is firm and reliable, leakage protector action is sensitive. Not allowed to start the motor with load, it is strictly prohibited to use the foot instead of the hand to operate.
3.6 The minimum safe horizontal construction distance between the edge of the pile frame and the high voltage line: 6m for the following 10kV, 8m for the following 35kV, and take corresponding protective measures during construction.
3.7 Electricians can not operate with electricity when wiring, and when dismantling and repairing, they should hang a warning sign of "forbidden to close the gate" at the place where the gate is closed, and send someone to take care of it.
Two, environmental protection and civilized construction
1. Construction of pipeline facilities should be carefully protected.
2. Construction for the fence, warning lights, publicity slogans and signs and other safety, civilized construction facilities should be protected to prevent damage.
3. Construction vehicles in and out of the site must be from the specified entrances and exits, the field speed limit of 5km/hour. With the progress of the project, timely cleanup of the construction site, to maintain the existing road smooth.
4. Take effective measures to control the site of a variety of dust, exhaust, sewage, solid waste and noise vibration pollution and harm to the environment, not in the site burning a variety of toxic substances, there may be oil spills, oil leakage location are to be set up to receive oil pan.
5. The construction site should be equipped with garbage cans, the construction process in a timely manner to clean up all kinds of garbage, waste oil, waste residue, waste mortar and waste concrete, mud shall not overflow.
6. Welding head for welding shall not be discarded, must be collected and disposed of centrally.
7. Field layout "three Qi", "four clear", "four missing", that is: tools stacked head to head, all kinds of turnover materials, fittings and accessories classified and stacked neatly, temporary facilities set up, fire safety facilities placed. Facilities set up, fire facilities placed neatly; work finished site clear, work finished feet clear, the day of work on the day clear, machinery table brush cleaning; not see scattered building materials, components, tools, not see debris, cigarette paper pile, not see the leftover mortar, shavings, waste lead wire pipe, not see the wires anywhere away.
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