I. Safety requirements
1. General requirements
1. 1 Personnel entering the construction site must wear safety helmets, and construction operators should wear necessary protective articles.
1.2 protective facilities must be set around the mud pit, and the height ≥ 1.2m ... After the hole is formed, the next working procedure will not be carried out for the time being, and safety protective facilities must be set up or earthwork should be backfilled.
1.3 the power supply of electrical equipment shall be erected and installed in accordance with the technical specification for temporary electricity safety on construction site (JGJ46—2005); Electrical equipment must have good zero protection and reliable electric shock protection device.
1.4 It is forbidden to drill holes and lift steel bars under high and low voltage overhead lines. When moving the pile driver, the bracket must keep a safe distance from the high-voltage wire.
1.5 power supply equipment such as distribution box shall not be placed in water or mud, wire joints shall be firmly insulated, and the head end of the equipment must be equipped with a leakage protector.
1.6 After the pile driver is installed, it can be put into use only after it is accepted by the security department.
1.7 During the whole construction process, strictly implement the safety operation procedures of relevant machinery, operate by special personnel, and strengthen mechanical maintenance. 1.8 The operating platform must be clean and tidy, and sundries must be removed to prevent the staff from tripping and causing accidents when pulling out the catheter.
1.9 Before unloading on site (mainly referring to steel bars, steel plates and steel pipes), check whether there are people in the unloading direction to avoid injury. 1. 10 Before conduit installation and concrete pouring, conduit clamps must be installed at the wellhead, and a working platform (away from the conduit position) must be set up to ensure the safety of personnel.
1. 1 1 In case of heavy rain, fog and strong wind of magnitude 6 or above, the drilling operation should be stopped. When the wind force exceeds 6, put down the frame on the ground. After the storm, we must conduct a comprehensive inspection, find problems and deal with them in time.
1. 12 The operator shall abide by the safety operation procedures for punching holes of pile drivers, and it is forbidden to operate illegally.
1. 13 Pay attention to the civilized construction on site and fill up the unused mud pit in time; Reinforce the mud pit pipeline in use.
Management, not to let mud overflow, sediment should be removed in time. Every sewage channel must be marked and equipped with lighting equipment at night to prevent stepping into mud and injuring pedestrians.
2. Requirements of the construction process
2. 1 Safety measures for pile driver in place and hole formation
2. 1. 1 After the pile driver is in place, there should be a special person to command the sleepers at the bottom of the machine to be filled, so as to ensure that the machine does not tilt or topple during construction. At the same time, conduct a comprehensive safety inspection of the pile driver and supporting facilities. After the pile driver is firmly installed, add diagonal braces and wind ropes to the frame.
2. 1.2 Before drilling, check whether the lubricating oil of each transmission box is sufficient, whether the joints are firm, whether the mud circulation system (centrifugal pump) is normal, and start operation after confirming the good performance of each component.
2. 1.3 Check the wire rope for broken wires, corrosion and raw embroidery before drilling. If the broken wire exceeds 10%, it should be scrapped. Check whether the wire rope lock is firm and whether the nut is loose.
2. 1.4 During punching construction, non-construction personnel shall not enter the construction site, and 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 his post or do other things without authorization. In the stamping process, if the frame shakes, moves or deviates, stop the machine immediately, find out the reason 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, check whether the frame is inclined, whether the connection part is loose, and whether there are signs of hole collapse. If it is found, it should be corrected immediately.
2. 1.7 During the movement of the pile driver, there should be a special person to take care of the cable to prevent the pile driver from crushing the cable.
2. 1.8 After the hole is formed, the orifice must be covered with a 5cm thick wooden board or bamboo splint to protect or pour concrete, so as to prevent other personnel or children from falling into the pile hole, and heavy objects and materials are not allowed to be piled up near the orifice.
2.2 Safety protection measures for fabrication and installation of reinforcing cage
2.2. 1 Non-construction personnel are strictly prohibited from entering the steel bar straightening site. Before steel bar straightening, check whether all parts of straightening equipment are safe and reliable in advance. Construction personnel should wear protective articles when removing rust and welding steel bars.
2.2.2 In the process of reinforcing cage processing, steel bars shall not be thrown at will. Before the finished segment reinforcing cage rolls, check whether there is anyone in the rolling direction to prevent injury. The safe distance between outdoor oxygen cylinders and acetylene cylinders shall be ≥5m, and sun protection measures shall be taken.
2.2.3 When hoisting the steel skeleton, it should be steadily lifted and lowered, and it can be decoupled only after the installation is firm, and the construction shall be carried out in strict accordance with the safety technical regulations for hoisting operation. 2.2.4 Attention must be paid to the installation of reinforcing cage: after welding or mechanical connection, it is necessary to check whether the inspector's feet are retracted, so as to prevent the accident of spraining the feet or even bringing people into the hole when the reinforcing cage is lowered.
2.2.5 During crane operation, no one is allowed to walk or carry out other operations within the rotating range of the boom.
2.3 concrete pouring safety protection measures
2.3. 1 When pouring concrete piles, the construction personnel should have a clear division of labor and unified command, so as to achieve rapid and continuous construction and prevent accidents. 2.3.2 When pouring concrete, the rings of distributor, funnel and deceleration funnel should be stable and reliable. When pumping concrete, the pipe support should be firm and special support should be installed. It is forbidden to bind it to other supports, and it is not allowed to hang heavy objects on the pipeline.
2.3.3 Don't stand around the gasket to prevent the gasket from accidentally falling into the hole.
2.3.4 When the catheter is docked, attention must be paid to the position of the hand to prevent the hand from being pinched by the catheter.
2.3.5 In the process of concrete pouring, when reversing the concrete mixer, the commander must stand in a fixed position that the driver can see, so as to prevent the commander from falling down while walking and causing mechanical injury. Sleepers must be placed under the tires. When reversing, no one is allowed behind the car.
2.3.6 In the process of lifting and dismantling the catheter with a crane, all field personnel must pay attention to the position of the hook to avoid head injury.
2.3.7 Dismantling catheter personnel should pay attention to prevent wrenches and screws. So as not to fall. When removing the catheter, no other operations shall be carried out above the catheter. 2.3.8 Before continuing to pour concrete after the conduit is hoisted, it is necessary to check whether the conduit is padded or hung firmly.
2.3.9 Warning lights, warning belts and safety signs must be installed around the mud pit and pile hole.
2.3. 10 In the process of concrete pouring, the mud shall be recovered in time, and it shall not be discharged into the pavement or sewage pipe.
3. Construction electricity safety measures
3. 1 Electricians must wear insulating shoes when working, and welders must wear protective glasses when working.
3.2 The power supply line adopts the "three-phase five-wire system" with zero protection system to achieve "one machine, one brake, one box and one leakage protection". All mechanical and electrical equipment should effectively prevent zero connection.
3.3 The on-site lines must be arranged neatly according to regulations, and no dragging is allowed on the ground to prevent rolling. When buried underground, signs should be set up. After the joint is bound according to the standard, it must be overhead or set with a joint box, and waterproof measures should be taken. All wires on the pile frame and chassis shall not have connectors.
3.4 The distribution box shall be equipped with a leakage protection switch, and the height from the ground shall not be lower than 0.8-1.6m. Rainproof measures shall be taken, and doors shall be installed and locked.
3.5 The distribution box on the rack should be in good condition, the motor should be connected to zero at least twice, the protection zero line should be solid and reliable, and the leakage protector should be sensitive. It is forbidden to start the motor with load, and it is forbidden to use feet instead of hands.
3.6 The minimum allowable construction distance between the pile frame edge and the high-voltage line is 6m below 10KV and 8m below 35KV, and corresponding protection measures should be taken during construction.
3.7 Electricians should not operate with electricity when wiring. During maintenance, a warning sign "No Closing" should be hung at the closing place, and a special person should be appointed to take care of it.
Second, environmental protection and civilized construction
1. Care should be taken to protect pipeline facilities during construction.
2. In the process of construction, fences, warning lights, propaganda slogans, signs and other safe and civilized construction facilities should be protected to prevent damage.
3. Construction vehicles must enter and leave the site from the specified entrances and exits with a speed limit of 5 km/h.. With the progress of the project, clean up the construction site in time and keep the existing roads unblocked.
4. Take effective measures to control the pollution and harm of various dust, waste gas, sewage, solid garbage and noise vibration on the construction site, and it is forbidden to burn all kinds of toxic substances on the construction site. The oil pan should be located where oil leakage or oil leakage may occur.
5. Set up trash cans on the construction site, and clean up all kinds of garbage, waste oil, waste residue, waste mortar and waste concrete in time during the construction process, and the mud shall not overflow.
6. The welding head shall not be discarded at will, and must be collected and processed in a unified way.
7. Site layout should be "three neat", "four clean-ups" and "four no shortage", that is, tools should be stacked at one end, reusable materials and components should be stacked neatly by classification, temporary facilities should be erected neatly, and fire control facilities should be placed neatly; Clear the site after work, clear the feet after work, clear the operation on the same day, and clean the mechanical platform; No scattered building materials, components, tools, sundries, cigarette butts, paper piles, mortar, shavings, waste lead wires and short tubes are left behind, and no wires are allowed to walk anywhere.
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