1. Security system measures
① Safety work should adhere to the policy of "safety first, prevention first", establish and improve the safety guarantee system and safety production rules and regulations, follow the Technical Specification for Safety in Highway Engineering Construction compiled by the owner, formulate effective safety technical measures, improve the internal data management of safety production, and carry out safety-up site construction and safety production inspection activities. Implement the safety technical disclosure system before construction, the safety production inspection system during construction and the safety production assessment system after construction.
(2) Formulate safety precautions to eliminate hidden dangers of accidents, and formulate corresponding systems and measures for personnel engaged in aerial work, blasting operations, construction machinery, transportation operations, etc. Take key preventive measures to nip unsafe factors in the bud and ensure the realization of safety objectives.
(3) The safety technical disclosure system shall be implemented step by step, and the management department shall organize relevant personnel to make written safety technical disclosure for the project or special project. The personnel participating in safety technical disclosure shall perform the signing procedures and save the data, and the full-time safety officer of the project management department shall supervise and inspect the implementation of safety technical measures and make records.
④ Strengthen the safety education on the construction site.
(5) Seriously implement the safety inspection system.
The project management department shall ensure the implementation of the safety inspection system, formulate rectification measures for the safety problems found in the inspection according to the principle of "four don't let go", designate special personnel to rectify within a time limit, and ensure that the principle of "managing production must manage safety" is truly implemented.
6. Three days before entering the construction site, formulate on-site rules and regulations, including safety system; On-site access management system; On-site safety system; Environmental protection and health system; Waterproof system; The surrounding and adjacent protection system shall be submitted to the engineer for approval, and all construction personnel shall be informed to abide by the system during the project implementation.
2. On-site equipment management, electricity utilization, flood control and flood control safety technical measures
(1) Construction machines, vehicles and equipment shall be managed and operated by special personnel, so as to achieve "three determinations" (personnel, machines and posts), "three excellences" (management, use and maintenance), "four skills" (use, maintenance, inspection and troubleshooting) and "four understandings" (management, structure and troubleshooting)
(2) Do a good job in site management, safe electricity use, fire prevention and flood control. On-site management is orderly, roads are smooth, materials are neatly stacked, full-time electricians must be responsible for on-site electricity consumption, and low-voltage lines are installed in a standardized manner. Protection and fire prevention facilities are configured in accordance with the regulations and are in good condition and effective, and the safety signs are complete and conform to the regulations. Set up a rainy season flood control team, assign special personnel to be on duty, strengthen contact with meteorological departments, do flood control work well in advance, and avoid loss of personnel and property.
(3) The construction site signs, safety nets, heat insulation boards, protective covers, safety railings, anti-slip boards and other safety facilities shall be complete and intact, and shall not be moved without authorization. All personnel entering the site must wear safety helmets.
(4) Pay special attention to the fire safety of warehouses or stacking points where materials and equipment are stored and the living quarters of construction personnel, and set up enough fire-fighting equipment, fire hoses and fire hydrants for emergencies.
3. Safety control measures for construction machinery and aerial work
① Safety control measures for construction machinery
A. All kinds of machinery operators and vehicle management personnel must have operation certificates, and operators are not allowed to operate machinery that does not conform to the operation certificates; Mechanical equipment is not allowed to be operated by personnel without operation certificate, and files shall be established for mechanical operators, who shall be managed by special personnel.
B. The operator must strictly implement the inspection system before work and the inspection and maintenance system after work according to the specifications.
C. When the machinery and equipment are parked at the construction site, choose a safe parking place, and have special personnel to guard at night.
② Safety technical measures for aerial work.
The aerial work involved in the construction of bridge and culvert in this contract section is the focus of safety precautions, especially the mechanized construction of high slope.
A. All personnel entering the construction site must wear safety helmets, labor protection articles, safety belts and other safety tools as required.
B. Operators are not allowed to wear slippers, high heels, hard shoes and skirts to enter the construction site.
C guardrails or protective nets shall be set at the place where the aerial work is away from the edge 1.2 ~ 1.5 meters, and shall be not less than 1.2 meters, and shall be stable and reliable.
D. restrict the personnel engaged in shelf construction to hold relevant certificates; During formwork construction, scaffolding with a height of more than 2m shall be completed by scaffolder.
E escalators, workstations, scaffolding, protective railings, safety nets, etc. The erection for construction must be firm and reliable, and can only be used after passing the acceptance. Shelf engineering conforms to the requirements of Technical Specification for Safety of Working at Height in Building Construction and Operating Rules for Safety Technology of Construction and Installation Workers.
4. Safety technical measures for bridge and culvert construction
(1) The slope coefficient shall be determined according to the soil conditions for foundation pit excavation. For the foundation pit with soft geology, temporary support should be made to support it with excavation. Earthwork for foundation pit excavation should be abandoned at the selected site, and the spoil pile should be at least 1m away from the edge of foundation pit to prevent safety accidents caused by pit wall collapse. During excavation, the accumulated water in the foundation pit should be removed in time to avoid water soaking the foundation pit.
(2) In the construction of digging pile for bridge foundation, when the foundation pit is deep, hang up the ladder and safety rope. A fence was set next to the hole, and ventilation equipment was installed in the hole. The lifting equipment is reliable and meets the construction requirements.
(3) Before installation of pier reinforcement and formwork, scaffolding, platforms, railings and escalators should be erected. When pumping concrete is used, the conveying pipe should be installed separately from the scaffold. When pouring concrete with a bucket, avoid the bucket colliding with the scaffold. When using concrete vibrator, carefully check whether the vibrator shell and rubber power cord are damaged. , the operator should wear insulating gloves to operate.
(4) When the formwork is dismantled, it shall be carried out according to the prescribed procedures. Fasten the hook first, and then remove the template. In the process of demolition, materials and tools shall not be thrown downward to prevent people from falling from high altitude.
⑤ During high-altitude open-air operation, herringbone frame hoisting and large-scale component hoisting, the influence of wind on the operation should be considered to ensure the safe operation of equipment and personnel, and the operation should be stopped in case of gale of magnitude 6 or above;
6. The aerial work must fasten your seat belt, set protective railings around and hang up the protective net. People should walk carefully, and it is forbidden for non-construction personnel to get up and down the pier.
All landowners bridge deck railings must be installed accurately and firmly to prevent falling objects from hurting people.
⑧ A protective net is set around the construction site, and warning signs are placed to prohibit non-construction personnel and vehicles from entering the construction area.
Pet-name ruby pretensioning method after tensioning construction, irrelevant personnel shall not enter the tensioning operation area. Tensioning equipment and tools (such as jacks, oil pumps, pressure gauges, oil pipes, wedge drivers and hydraulic control jacking valves, etc.) must be checked for completeness. ) meet the requirements of safe construction. Operators should unify signals and wear safety supplies.
Attending the prefabrication yard will hoist the trolley with crane, transport it with flat trailer, install beam and slab with crane, and construct arch culvert, especially take protective measures according to safety regulations to ensure project quality and construction.
5. Construction measures in winter, rainy season, night and busy farming season
① Winter construction measures
(a) according to the annual plan and construction organization design, reasonable arrangement of winter construction projects, to ensure the balance and continuity of engineering construction; Prepare winter construction scheme and technical measures, and conduct technical disclosure and training for relevant personnel. The materials department will implement relevant engineering materials and cold-proof materials in advance.
(b) In order to prevent the sudden drop of temperature and freezing injury of the project, pay attention to the weather changes at any time before and after the winter construction and take anti-freezing measures in time. For projects related to winter construction, all preparations should be made in advance, measures should be taken in advance for various facilities and materials, and protective measures such as anti-freezing, gas poisoning prevention and water pipe freezing cracking should be strengthened, and special personnel should be assigned to check the cold prevention and deal with various problems in time.
(c) The foundation of the foundation shall not be frozen after the completion of the project construction, and the anti-freezing measures shall be checked at any time to ensure the project quality.
(d) When concrete is constructed in winter, according to the requirements of engineering category, meteorological data, material source and design documents, through economic analysis, the economic method that meets the requirements of construction specifications is selected.
Concrete winter construction should do the following:
A. When concrete is constructed in winter, when the original temperature of the material can't meet the specification requirements, firstly, the mixing water is heated by thermal calculation, and the cement is only insulated without heating.
B the temperature during concrete pouring and curing shall not be lower than 10℃ when using heat storage curing and not lower than 5℃ when covering heat preservation. In winter construction, the concrete mixture ratio should be accurately selected and the measurement should be strictly controlled. The mixed antifreeze must be tested and reported to the supervision engineer for approval before use.
C. During concrete curing, thermal insulation measures such as thickening formwork, double formwork and covering with straw curtain should be taken.
D. The heat preservation and curing time of concrete shall be no less than 28 days, and the time of formwork removal shall be appropriately extended.
E concrete pouring shall be carried out at the highest temperature every day, and construction shall not be carried out at night.
F. The concrete at the top of the pile foundation is buried with soil to ensure the quality of concrete. In the process of concrete pouring, indoor and outdoor specimens with different temperatures are made twice to compare and check the quality of concrete.
The following measures should be taken in winter masonry construction: take necessary anti-freezing measures to prevent masonry from freezing; Mortar strength does not meet the design strength of 70% shall not be frozen; The preparation and masonry of winter construction mortar shall be mechanically stirred in the greenhouse for at least 2min. Mortar should be transported in insulated containers, and it is not allowed to be transported halfway. Mortar is used with mixing, and it will be used up within 0.5h at a time.
(2) Construction measures in rainy season
(a) Get in touch with the local meteorological and hydrological departments, keep abreast of the weather forecast and flood situation, so as to arrange and guide the construction more reasonably, set up a leading group for flood control, and comprehensively lead and organize flood forecast and flood control and flood fighting.
(b) During the rainy season, construction prevention, waterproofing and drainage of various temporary facilities shall be well done to ensure the smooth drainage ditch, so as to ensure the timely removal of surface water during the rainy season construction. Prepare enough materials before the rainy season to ensure the smooth progress of the construction, and assign special personnel to maintain the service road to ensure the smooth flow of the service road during the rainy season.
(c) When filling embankment in rainy season, attention should be paid to controlling the water content of filler. If the filler is too wet, it should be dried before use to ensure that the filler is in the best water content state. It is forbidden to construct impervious soil filler in moderate rain or continuous rainy days. After the rainy day, the subgrade surface must be dry before the construction of the next procedure can be carried out.
(d) When filling the embankment, the filler shall be excavated, transported, laid, leveled and compacted. Each compacted layer constructed in rainy season shall be made into 2 ~ 4% drainage cross slope. Embankment slope should be kept flat at any time, without pits, and loose soil should be compacted before the end of work.
(e) Roadbed slope protection should be followed up in time to ensure slope stability and soil and water conservation in rainy season. In the rainy season, we should adhere to the inspection system of "in the rain and after the rain", check the drainage facilities of dikes, deal with problems in time, and keep the sidewalks unblocked.
③ Construction measures at night
(a) Lighting lamps and lanterns for mechanical vehicles constructed at night shall be in good condition, and sufficient lighting shall be ensured at the construction site to ensure the safety of construction at night.
(b) When construction is carried out at night in the construction site near residential buildings, the time shall not exceed 10 as far as possible, so as not to disturb people's rest.
(c) During construction at night, safety personnel, technicians and quality inspectors shall work in shifts, strengthen quality and safety inspection and technical guidance during construction, prevent uncontrolled and blind construction at night, and ensure the engineering quality of construction at night.
④ Construction measures in busy farming season
(a) Arrange the labor force of each construction project reasonably, arrange the projects and processes that require less labor force in the busy farming season, try to employ long-term and temporary workers who are not disturbed by busy farming, and consider leaving enough mobile labor force in advance to supplement the affected processes.
(b) In off-season and peak construction period, consider hiring local labor nearby to increase the employment rate of local farmers.
(c) Prepare enough materials and purchase them locally before the busy farming season, so as to prevent the insufficient production of materials in the busy farming season from affecting the project progress.
(d) Actively handle the relationship with local people to ensure smooth construction roads in busy farming season.
6. Civilized construction, environmental protection, cultural relics protection and other measures
(1) civilized construction guarantee measures
Civilized construction is a comprehensive reflection of corporate image, management level and overall quality, and also a concrete embodiment of employees' mental outlook.
(1) Deeply understand and respect the local customs, adhere to the principle of mutual assistance and mutual benefit, gain the support of the masses, and give full play to the advantages of local human and material resources.
(2) Civilized construction education, enhance the awareness of civilized construction, and establish the image of civilized construction of enterprises.
(3) According to the approved construction organization design and layout, build production facilities and living facilities, make rational layout, occupy less cultivated land as far as possible, complete the "three links and one leveling" in time, create a good construction environment and create a civilized construction site. The construction of the construction camp should meet the requirements of fire control, environmental protection and hygiene, the domestic electricity consumption should meet the safety regulations, and the domestic garbage should be disposed of in time according to the regulations. The roads in the construction area should be smooth and tidy, without littering and scattering; Pouring apron slope around the structure and keeping it clean; The drainage system is unblocked. Construction waste should be piled up in a centralized way and handled in time. The layout of the mixing station is convenient for construction and as far away from residential areas as possible. All materials shall be neatly stacked and clearly marked, and different materials shall not be mixed.
④ Set up "four cards and three standards" on the construction site, indicating the name of the construction project, project legal person, survey and design, construction supervision, name of the construction unit and person in charge.
⑤ Mechanical equipment shall be parked in an orderly manner, and construction vehicles shall be driven in a disciplined manner, with courtesy first, so as to ensure traffic safety and construction safety.
⑥ The construction site should always be kept clean and orderly, with civilized construction and finished materials, so as to protect local water resources and buildings and avoid losses.
(2) Environmental protection measures
Environmental protection guarantee system
(1) set up an environmental management organization headed by the project manager, and define the division of responsibilities of all levels and departments in environmental protection work.
② Establish and improve the construction environment management system and various environmental management rules and regulations.
(3) Carry out environmental protection work and responsibilities, check daily construction at any time, and correct problems in time when found.
(4) According to different construction stages, timely adjust the content of environmental protection work to ensure the quality of work.
⑤ Conduct routine environmental inspection once a week, and record the inspection results.
(3) Environmental protection guarantee measures
(1) The principle of "overall planning, rational layout, prevention first, comprehensive treatment and strengthened management" and the principle of "whoever pollutes will be treated and whoever destroys will be restored" must be implemented in the construction environmental protection work.
(2) Educate the construction personnel on environmental protection-related laws and regulations, so that the construction personnel can firmly establish environmental awareness, consciously abide by relevant laws and regulations, and carry out construction in strict accordance with the design.
(3) During the construction, borrow soil, spoil soil and treat sewage in strict accordance with the design documents and relevant agreements and requirements signed by Party A and the local environmental protection department, and take effective preventive measures to avoid and reduce the pollution and damage to the environment caused by improper construction methods. The slope toe of all spoil ground should be protected, and the pile top should be well drained. It is forbidden to dump waste soil into rivers and valleys at will. Trees along the line shall not be cut and destroyed at will. During the construction of temporary works, the environmental protection of temporary works shall be done in strict accordance with relevant laws and regulations.
(4) The domestic garbage, engineering garbage and waste oil in the living area of the construction site should be piled up by classification and transported to the place designated by the local environmental protection department in time. It is strictly prohibited to dump garbage and spoil near rivers, ditches and spoil sites. Septic tank is set for domestic sewage treatment, which is not directly discharged; Put an end to the burning of toxic wastes (waste engine oil, waste plastics, etc.). ); When pumping water from the local surface and underground, keep the water holding and pumping equipment clean, avoid polluting the water source, and pay attention to saving water.
(5) After completion, the temporary land occupation will be resumed in time, and the spoil ground will be covered with farmland, or grass and trees will be planted for greening, so as to protect the environment and benefit the people.
⑥ For the operation surface, loading and unloading and transportation projects that are easy to produce dust, formulate operation procedures and sprinkler systems, maintain humidity and control dust. Fine-grained bulk materials such as cement that are easy to fly will be stored in the warehouse, and the bulk materials will be piled up in the open air for compaction and covering.
(3) Cultural relics protection measures
(1) Educate the construction personnel on the laws and regulations of cultural relics protection, enhance their awareness of cultural relics protection, and consciously abide by relevant laws and regulations.
(2) Before the commencement of construction, the personnel of the cultural relics management department shall be invited to give lectures on the spot to introduce the distribution and characteristics of local cultural relics, so as to further enhance the cultural relics protection consciousness and sense of responsibility of the on-site construction personnel, and understand and know the protection methods when cultural relics are found on the construction site.
(3) If cultural relics or items of archaeological and geological research value are found during the construction, the site shall be immediately closed, and special personnel shall be appointed to protect them, and report to Party A and relevant departments as soon as possible, and they shall never be disposed of without authorization.
(4) Main technical measures to prevent air pollution:
The air pollution during the construction period is mainly caused by dust generated by lime-soil mixing, operation and transportation of construction vehicles and road construction machinery. In order to reduce the air pollution in the construction site and protect personal health, the following measures are taken:
(1) The mixing equipment is tightly sealed, or provided with dust-proof equipment;
(2) Transport vehicles are covered with colored plastic sheets to prevent cars from polluting the environment along the way. Sprinkle water on the road surface during construction;
(3) When mixing cement to stabilize subbase, pay attention to moisture retention to avoid dust;
(4) During tunnel construction, the construction procedures and operating procedures shall be strictly observed, and corresponding safety facilities such as dustproof, waterproof and rockfall prevention shall be provided during construction to ensure the personal safety of construction personnel.
⑤ Provide all necessary labor protection articles for mixer drivers and anchor spraying machines to protect workers' health.
5] noise prevention measures
(1) Reasonably arrange personnel to operate road machinery by turns, so as to reduce the time of exposure to high noise, or interspersed with high noise and low noise work.
(2) For the construction personnel close to the noise source, in addition to taking labor protection measures such as wearing protective earplugs or helmets, their working hours should also be shortened appropriately.
(3) Pay attention to the maintenance and normal operation of machinery, and try to keep the noise of road construction machinery at the lowest sound level.
(4) In order to ensure the rest of the residents on the construction site, the construction time shall not exceed 150m from the residential area.
[6] Main technical measures of soil and water conservation
(1) Protect the ecology, do a good job in soil and water conservation, strengthen the education and management of construction personnel, and strictly abide by the relevant laws and regulations of the state and local governments.
(2) The Engineering Department is responsible for soil and water conservation, equipped with full-time environmental protection personnel, established and improved the soil and water conservation guarantee system, adhered to the principle of "prevention first, comprehensive prevention and control, and overall planning", grasped the key points of soil and water conservation work, and took targeted measures to ensure that water sources, vegetation and land were not polluted and destroyed.
(3) Before construction, invite local environmental protection and land departments to investigate hydrology, geology and vegetation along the line, and formulate detailed measures to ensure soil and water conservation during construction.
(4) Carry out the construction in strict accordance with the design, minimize the excavation trauma and reduce the damage to vegetation. Abandoned sand, stone and soil must be transported to the designated place for stacking. After the completion of the project, the borrow yard and living and production land must be ploughed again or planted with trees and grass, and a drainage system should be built to prevent soil erosion.
(5) Drainage facilities should be given priority in subgrade engineering, and soil and water conservation projects such as slope planting and slope protection should be constructed simultaneously with the main project to prevent soil erosion caused by rain.
Once the cooperation and cooperation measures with adjacent contract sections and other relevant units.
(1) In order to ensure the smooth progress of the project as planned, our company will take the initiative or under the guidance of Party A to coordinate with relevant local departments, design, supervision and contractors of adjacent contract sections, and cooperate with the construction of units of adjacent contract sections.
(2) the project intends to do a good job in construction education, so that all construction personnel can take care of the overall situation.
(3) When measuring the pile position and elevation of this contract section, it is necessary to go deep into the two pile positions and elevation points of the adjacent contract section, and inform the other party of the measurement results in time to ensure the accuracy of the measurement.
(4) For the construction at the junction of adjacent contract sections, we actively consult closely with the construction units of adjacent contract sections and make overall arrangements to ensure the smooth progress of the construction.
⑤ Help each other in construction, and major projects such as adjacent sidewalks, temporary bridges and power lines can be convenient to each other. Actively maintain, take the initiative to provide water, electricity and other help to the other party, and provide it to subsequent units for use.
Take protective measures for semi-finished products and completed projects.
(1) For the completed project, the construction team will arrange special personnel to patrol and protect it, and make patrol records until the formal completion acceptance is delivered to Party A. ..
(2) Precast beams and other components shall not be loaded or hoisted when they do not reach the specified strength.
(3) When the strength of culvert mortar concrete does not meet the design strength, it is forbidden to pass and water.
(4) After the abutment and subgrade are segmented, enclosures and various signs shall be set to prevent mechanical damage and damage to the subgrade surface as a service road.
(5) After the bank protection project is completed, special personnel shall be arranged for inspection after heavy rain, and any problems found shall be repaired in time. Make the waterproof and drainage system unblocked, and ensure that the embankment and cutting are in good condition and the national highway traffic.
⑥ Arrange the construction sequence reasonably to avoid the pollution and destruction of the completed project by the follow-up project.
Levies land saving measures
(1) In the overall construction planning, temporary facilities should occupy as little cultivated land as possible on the premise of meeting the needs of the project. Based on the principle of suiting measures to local conditions, simplicity and convenience, all kinds of temporary houses will be set up nearby, and the existing roads, houses, venues and other conditions near the line will be fully utilized.
(2) During the construction period, any vegetation and any land outside the design scope shall not be destroyed at will. During the construction of bridges and culverts, the land within the scope of land requisition shall be used as the construction site as much as possible, and barren hills and slopes shall be requisitioned as the construction site as much as possible.
(3) The cement warehouse is heightened to increase its capacity. Try to build construction access roads or use existing access roads within the scope of land acquisition, and set up meeting points at the same time to reduce the width of access roads and achieve the purpose of occupying less land.
(4) Keep close contact with the local government, especially the land management department, make full use of idle sites and reduce temporary land lease.
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