Road construction safety knowledge?

Road construction safety is very important, and safety work must be done before construction can begin. Below are some that I have compiled for your reference.

1. Construction preparation

Before construction, the site must be treated with "three connections and one level". When building temporary access roads, the safety of vehicles and pedestrians must be ensured. There are clear signs and traffic control measures. Conduct surveys to understand the temporary water and electricity consumption at the construction site and draw sketches. Provide water and electricity safety education to all construction workers, and strictly abide by the certification system for special staff.

Before construction, clearly mark the pipelines buried underground and provide detailed explanations to the construction personnel. When excavation passes through dangerous structures such as cracked walls and crooked chimneys, they must be supported and reinforced in advance. Set up protective fences for level points and electric poles, and formulate practical and feasible safety construction plans for road sections that are prone to collapse during rainy season construction.

Safety signs, dangers, warnings, symbols and slogans prescribed by the state are hung in the construction area to warn people of the scope of protection and dangerous areas.

2. Safety of roadbed construction

Before roadbed construction, a strict construction organization design should be prepared, strict construction specifications and safety technical operating procedures should be formulated, and on-site command and scheduling personnel should be implemented. All construction personnel will conduct safety technical briefings, arrange safety protection facilities on the construction site, and equip construction personnel with necessary safety protection supplies. Only when everything is ready can the roadbed construction begin.

During roadbed construction, dedicated personnel must be designated in the construction area to manage traffic and provide unified command for personnel, vehicles, and machinery. To avoid personal and mechanical accidents. When the excavator is constructing, a certain construction site must be guaranteed, and personnel are not allowed to enter within the turning radius. Earth-moving vehicles entering the construction site must be directed by dedicated personnel to ensure safety. Pedestrians are not allowed to pass through the construction site. When piling soil, necessary sidewalks must be left in the piling area, and soil piling against walls should be avoided as much as possible. When soil must be mounded, the height should not exceed 1 meter, and good drainage ditches should be provided. When carrying out rolling construction, it is necessary to ensure that the edge of the road roller is left with a sufficient safety distance to prevent unsafe accidents during rolling. When using electric tamping for construction, the rope must be strong and reliable to prevent the presser foot from hurting people. The ramming wire must be well insulated, and the start and brake switches must be sensitive and safe. When man and machine cooperate in construction, there should be a certain safe distance between man and machine. During roadbed construction, there should be dedicated safety officers to manage the construction safety on site.

3. Construction safety of base layer and surface layer

When constructing the base layer of triple soil, attention should be paid to preventing environmental pollution and affecting the physical and mental health of residents. Fences should be set up when necessary. No one is allowed to stand around the machine. To ensure that the machine can move forward and backward freely, there must be a dedicated person on site to direct the machine to prevent personal injury or death. During paving construction, construction workers should pay attention to avoid construction machinery in time and obey on-site instructions. After the construction is completed, the site must be cleaned up, and remaining materials must not be dumped on the roadside to affect pedestrian safety.

Before surface layer construction, traffic in the construction area must be closed off with wooden horses, barrier ropes, etc., clear warning signs such as red flags or red lights must be set on the barrier, and dedicated personnel must be assigned to monitor the traffic. Before construction, the integrity of machinery and equipment must be carefully checked, and maintenance work must be done. During the construction of concrete pavement, attention should be paid to regular inspections, transportation vehicle safety, and electricity safety, etc. When passing vehicles run over you, you must carry out traffic management and pay attention to avoid passing vehicles at all times. Pay special attention to the following construction safety: When installing the formwork, all materials must be stacked neatly to prevent tampering and puncture injuries. During installation, the height of the formwork is required to be accurate. When adjusting the height of the formwork, be sure to avoid squeezing your fingers. Before mixing concrete, check whether the transmission part, clutch and brake of the mixer are flexible and reliable, and whether the wire rope is broken or damaged. The connecting screws of each part of the mixer should be firm, and the transmission part should have a protective cover. The motor wiring is good. Do not put your hands or tools into the mixing drum while the mixer is rotating. When the mixer fails, the power supply should be cut off immediately for repair. When the mixer is lifting the hopper to pour materials, personnel are not allowed to clean the waste under the hopper to prevent accidents. When the mixer is stopped for more than 1 hour, the remaining materials in the mixing drum should be cleaned up. When paving and vibrating concrete, you should first check whether the vibrator circuit is intact to prevent leakage and circuit breakage, which may cause accidents.

During the vibrating construction, there should be a dedicated person pulling the soft wire forward simultaneously with the vibrator to prevent electric shock accidents caused by twisting or pressing the wire during the vibrating construction.

After the cement concrete pavement is poured, a certain period of curing is required. During the health care period, the passage of heavy vehicles or vehicles with strong vibrations should be prohibited.

4. Construction safety of accessory structures

When constructing precast masonry:

When transporting precast blocks, you should first check whether there are any cracks in the precast blocks to prevent handling Sudden breakage of the medium can injure people. When transporting, two people should carry each other and stack them neatly and steadily. During the transportation, the two of them coordinated to prevent their hands and feet from being crushed. When installing, hold it firmly and be careful when moving. After the installation is completed, collisions between pedestrians and vehicles are prohibited during the health maintenance period.

When constructing wells:

Workers must wear safety helmets correctly. Use chute or hoist to transport bricks and stones downward. When lifting, the rope must be strong and tied tightly, and the upper and lower workers must cooperate in a consistent manner. When the well is more than 1.2 meters long, scaffolding or simple shelves must be set up. When building masonry, prevent bricks, stones, tools, etc. from falling and injuring people.