Where is the construction organization design of cable trench?

Construction organization design of cable trench

Chapter I Compilation Description

The first section compilation basis

Xiaoqing River Binhe South Road Comprehensive Treatment Cable Tunnel and Cablization Project 1. 1 Bidding Document;

1.2 Design drawings of Xiaoqing River comprehensive treatment for cable tunnel and wiring project of Binhe South Road;

1.3 information and materials available at the site during the civil construction of our unit;

1.4 Various construction specifications applicable to this project specified in the tender documents;

1.5 Construction experience of cable tunnel and cable engineering in our unit.

Section II Compilation Principles

2. 1 On the basis of fully understanding the bidding documents, adopt advanced, reasonable, economical and feasible construction scheme.

2.2 Reflect environmental awareness in the construction organization, protect the environment, and have more detailed environmental protection measures.

2.3 The construction technology conforms to the construction specifications, design requirements and requirements of the tender documents, and strives for perfection.

2.4 The division of construction tasks is reasonable, and the construction progress conforms to the actual situation.

2.5 Adopt advanced and supporting construction equipment and technology to ensure the project quality and time limit for a project.

2.6 According to the geological conditions and climate characteristics of this project, the construction scheme is optimized in a targeted manner.

Section III Engineering Technical Specifications This project will be constructed in strict accordance with the current construction acceptance specifications.

3. 1 Code for Construction and Acceptance of Masonry Engineering (GB50203—2002)

3.2 Technical Standard for Site Inspection of Masonry Engineering (GB/T503 15-2000)

3.3 Description of Code for Acceptance of Construction Quality of Concrete Structure Engineering (GB50204-2002)

3.4 Standard for Quality Inspection and Evaluation of Municipal Drainage Engineering (CJJ3-90);

Chapter II Project Overview

The first section project location and scope

This project is located in the middle line of the newly-built Binhe South Road in Jinan. The specific contents are: cable trench 2.0m×2. 1m, total length 1.43km, 18 manhole, 3 X-joints (otherwise 1 undetermined) and 8 T-joints,/kloc-0. Power pipe bridge is used to cross the bridge, the lower part is bored pile foundation and the upper part is steel truss.

The second quarter time limit for a project requirements

This project officially started on August 28th. According to the requirements of the headquarters, the cable tunnel construction will be completed before June 65438+1October 65438+May. According to the actual situation of this project, combined with the labor force and mechanical equipment strength of my bid section, all the construction tasks of this contract will be completed within the required time limit.

Chapter III Main Construction Methods

The first section cable trench construction process flow chart

Construction process flow chart of cable trench

The groundwater level in the ditch is shallow.

Engineering survey in the second quarter

Survey control is the foundation of construction, so I will use the plane control points and elevation points used in civil construction to carry out construction survey, and carry out the survey in strict accordance with the engineering survey specifications.

2. 1 According to the actual situation of this project, temporary leveling points should be set up during the construction process, generally not less than 60m from the cable trench construction site and not less than 25m from the structures. When the construction leveling point pile cannot be preserved, its elevation should be measured to a stable structure, and its accuracy should not be lower than the grade requirements of the original leveling point. At the same time, establish a review system for all leveling control points, especially after rainy days, repeatedly close leveling points and correct them in time to avoid elevation discrepancy caused by sinking points and collisions.

2.2 Construction surveyors should review all kinds of data and related geometric dimensions provided by the design drawings to be constructed for each project, carefully study and be familiar with the drawings, understand the design intent, be aware of them, and solve the discrepancies with relevant personnel such as design and supervision in time.

2.3 All kinds of point-line angles, elevations and other data calculated and collated by the surveying industry must be checked by two people before lofting can be carried out. After the accuracy of survey and lofting meets the design requirements, please ask the supervision engineer to conduct on-site acceptance, sign the inspection sheet for approval, and then make disclosure to the construction team. The disclosure shall be made in written form with sketches, with clear contents and accurate figures, signed by the handover personnel and filed for future reference.

In the process of construction, surveyors must take every step of the survey seriously (indoor and outdoor), make sure that the basis is correct, the calculation is accurate and meticulous, proofread step by step, eliminate deviation, reduce losses and ensure that the engineering survey is foolproof.

2.4 Completion measurement Completion measurement is not only the basic basis for acceptance and evaluation of whether the project is constructed as designed, but also the basis for management, maintenance, reconstruction and expansion after project delivery. Therefore, as-built drawings and as-built data are important technical files of national infrastructure projects, which must be drawn and sorted out according to regulations and preserved for a long time.

The key to complete the completion survey is to systematically accumulate the data of various inspections and re-surveys from the beginning of construction preparation, especially for concealed works. The completion position must be measured in time before backfilling or the next process.

Design drawings, design change notices and negotiation records shall be kept intact during the whole construction process. With the progress of the project, each project should be completed in time for inspection after completion, and the unfinished projects should be kept in mind and accumulated at any time. Records, lofting, re-examination and inspection reports of each working procedure shall be bound into volumes according to the division of labor and properly kept.

Section 3 Cable Trench Construction

3. 1 trench excavation construction

The excavation depth of the trench is mostly miscellaneous fill, so this project adopts artificial and mechanical sloping 1: 0.5, and there are 0.8m wide working faces on both sides of the trench. If the cross section is not suitable for mechanical excavation due to the influence of surrounding buildings or other obstacles, manual excavation will be adopted. During the excavation, the excavated residual soil will be stacked nearby, but the stacking point is not less than 5 meters away from the groove edge. Dig the trench bottom elevation in strict accordance with the design, and set a collecting well with a diameter of φ500 and a depth of 0.5m every 50m in the area with abundant groundwater. During trench excavation, temporary construction drainage should be carried out, and the collected water should be pumped to the drainage system outside the construction scope by a water pump to keep the pipeline under waterless conditions. After the foundation trench excavation is completed, conventional borehole detection shall be carried out, and the depth of borehole detection shall not be less than 2.5m ..

3.2 basement treatment construction:

During pipeline construction, the excavation shall reach the design elevation. Please ask the designer, supervisor and owner to inspect the trench on site to ensure that the cable trench foundation meets the design requirements. The design requires the bearing capacity of the foundation at the bottom of the ditch to reach 120 kpa. Because the foundation of the foundation trench in my bid section can't meet the design requirements, the electric power design institute, the management company and the supervision unit * * * decided to carry out 3: 7 lime-soil replacement construction for the foundation trench that can't meet the design bearing capacity. According to the requirements of all parties, the replacement construction test section was carried out in our bid section, and the replacement thickness was finally determined to be 0.6 meters, and the width of each side was 0.6 meters.

3.3 Cushion and floor construction:

Before floor concrete construction, steel bars shall be bound in strict accordance with the design and specification requirements. If the steel bars are rusted or greasy, they should be treated in advance, and the steel bars should be bound in a full state. Floor reinforcement design drawings are divided into two layers. Because there are no support rods on the design drawings, in order to ensure the smooth progress of the construction, I bid for additional support rods after asking the supervision unit and the management company. The supporting ribs are arranged in a quincunx shape at the interval of1.0m.

C20 concrete floor adopts bamboo veneer as side formwork and is fixed with square wood and steel bars. Commercial concrete is used in my bid section. After the commercial concrete enters the site, slump test is carried out to observe its workability. Can't meet the requirements of concrete shall not be used. According to the specification requirements, concrete test blocks should be made, and the test mode should be cured under the same conditions as structural concrete. As far as possible, the bottom slab concrete shall be poured as a construction section (60m) according to the designed deformation joint. When pouring concrete, advance paving in parallel from one end to the other end, flatten and compact with a flat vibrator, manually collect slurry, smooth and smooth, track and measure at any time in the process of concrete pouring, and make records, strictly collect slurry according to the elevation, use a leveling ruler to detect, manually collect slurry for not less than three times, and chisel out the concrete floor surface at the junction of side wall and floor slab, so as to facilitate the firm combination of wall and floor slab. The bottom plate shall be cured with wet water in sacks 14 days.

3.4 Wall construction:

When the concrete strength of the bottom plate reaches 2.5Mpa (that is, three days later), the wall can be built, and the wall dividing line is released by the surveyor before the wall is built. Before use, the wall clay brick should be soaked in clear water, and the joint between the bottom plate and the wall should be chiseled clean, and the wall should be built with M7.5 cement mortar clay brick. Masonry mortar must be full, in case of water leakage, build by laying bricks or stones mortar to scrape, staggered joints up and down smoothly. In the process of wall-building, the embedded parts of cable supports should be buried every 800mm along the ditch length in time, with the two sides staggered by 0.4m (when constructing in sections, the position of embedded parts should be calculated before construction).

3.5 cover structure

The capping of the table cap is cast on site. After the wall masonry is completed, tie the top steel bar and set up the formwork. Before pouring, first pour a layer of mortar at the joint between the wall and the cap, and then pour the cap concrete.

3.6 Plastering construction

After the capping pouring is completed, the interior and exterior walls and the bottom plate shall be plastered with 20mm thick 1:2.5 waterproof mortar according to the design requirements (for the dosage of waterproof agent, please refer to the selection instructions of waterproof agent), and the wall plaster shall be formed at one time from bottom to top. And covered with sacks for maintenance.

3.7 Cover Structure

Prefabricated cover plates are centrally purchased by professional manufacturers and then transported to the construction site for installation. Before installation, the surveyor will set out the position of each board with ink lines, and then lift the cover plate to the top of the cover mechanically according to the corresponding position. After the cover plate is in place, use 1: 2 cement mortar to fill the joint, and use 1: 2.5 waterproof mortar to pour the 40mm thick surface layer.

3.8 Backfill construction

After the cover plate is installed, backfill should be carried out on both sides of the trench wall in time. Before backfilling, the water and sundries at the bottom of the ditch should be removed. Backfill materials shall be lime or cement improvement materials. At the same time, the height difference of manual backfilling on both sides of the trench shall not exceed 0.3m, and it shall be tamped by electric rammer. The compactness of backfill materials shall be compacted according to the requirements of specifications (not less than 90%). When backfilling, it shall be carried out in layers from high to low according to the drainage direction of foundation pit, and the thickness of layers shall be less than 0.3m Silty soil or large blocks containing organic matter and construction waste shall not be backfilled in the trench.

3.9 Cable bracket installation:

After the wall plastering is completed, the cable bracket can be installed. Cable bracket is welded by channel steel and angle steel, and its cross arm and vertical iron are chamfered, and the layout is determined under the condition of ensuring its geometric size. The material is HPB235 steel. The height of weld should be greater than or equal to the thickness of base metal. After welding, the cable bracket shall be derusted, and the whole bracket shall be coated with plastic to prevent corrosion. The thickness of plastic coating shall not be less than 0.4 mm. There shall be no flash burr on the cross iron of the bracket, and the included angle shall be polished smoothly. The joints of all components are welded on both sides, and the welding thickness is greater than 6mm；; After welding, the welding slag is removed and coated with a layer of antirust paint and two layers of silver paint; The grounding belt is laid inside and outside the whole trench, and a grounding electrode is placed every 50 meters.

The fourth quarter rainy season construction technical measures

4. 1 The moisture content of sand in rainy season should be determined frequently. When mixing mortar, appropriate field mixture ratio should be provided with the moisture content of sand to ensure the strength of mortar.

4.2 Construction concrete pouring in rainy season shall be arranged as far as possible in no rain or light rain weather, and a canopy shall be set up to cover it.

4.3 The rainy season is inconvenient for construction and transportation, so attention should be paid to the supply of construction materials, which can be properly reserved before the rainy season.

4.4 The construction site and processing workshop shall be provided with a reasonable drainage system to ensure smooth water flow, no water accumulation, smooth construction access road, good road arch and convenient drainage, and return to work quickly after sunny days.

4.5 Provide necessary rain boots and raincoats for the construction personnel, and take necessary anti-skid measures for the construction sidewalk to ensure safety in production.

4.6 All mechanical and electrical equipment shall be rain-proof and moisture-proof, and grounding protection devices shall be installed for electrical equipment.

4.7 Raw materials, semi-finished products and other materials that are afraid of rain should be stacked in the shed or indoors with good ventilation, so as not to make cement wet in the rain.

Section 5 mechanical equipment and labor force planning

5. 1 mechanical equipment configuration

According to the characteristics of heavy construction tasks and tight construction period, I plan to equip this bid with the following mechanical equipment:

5.2 Staffing

I will send high-quality engineering and technical personnel, skilled construction management personnel and migrant workers to ensure that the project is completed on time with good quality and quantity. There are 4 construction managers, 2 test surveyors, and workers 120 in peak production period. As the construction period of this project is very tight, it is considered to arrange according to 1.5 working days every day to ensure that the whole project can be realized as scheduled.

Section 6 Quality Assurance Measures

Quality assurance measures Establish a quality assurance system with the chief engineer as the main body and strengthen quality management. Seriously carry out self-inspection, mutual inspection and mutual inspection, adhere to the "three inspections" system, and do not carry out the "three inspections" of self-inspection, mutual inspection and mutual inspection according to regulations, and are not allowed to transfer to the next process. At the same time, the person in charge of the project, with the cooperation of the quality management functional departments, manages and grasps the implementation of various standardization work in the project to ensure the information communication of the same departments, so as to ensure that the relevant quality requirements are accurately conveyed and implemented.

The trial matching and testing of various materials are approved by the owner, management company and supervision before use. All raw materials and semi-finished products must have material certificates and factory reports, and steel and cement must have quality inspection test reports. Unqualified products are not allowed to be put into use, and materials without factory certificate, factory report and re-inspection report are prohibited.

After the completion of each working procedure, the next working procedure can only be carried out after the full-time quality inspector has passed the self-inspection and obtained the supervision visa. All concealed works can only be carried out after the supervision personnel have passed the acceptance visa.

Strengthen quality awareness, conduct systematic and standardized pre-job training for all technical managers and employees, including migrant workers, enhance the concept of quality control, and hold quality analysis meetings regularly or irregularly to improve the quality of all staff.

Concrete pouring should be carried out in accordance with the requirements of the specification for cement sampling inspection, and the silt content and crushing value of sand and stone should be detected at the same time. Do not meet the requirements shall not be used. When pouring concrete, concrete slump test and concrete block should be done well according to the specification requirements, and sent to the laboratory for compressive strength test on time.

Before the construction survey, carefully check the instruments, eliminate the errors in the survey in time, and control the cable tunnel axis with total station. Use level to control the elevation of each part.

The problems found in the construction shall go through the formalities of alteration or visa according to the specifications, and become effective only after being approved by Party A's supervision or design visa.

Strengthen the standardization, standardization and procedural management of quality inspection and construction quality.

Do a good job in finished product protection: focus on protecting the completed pipelines on both sides of the power trench.

Quality records are the basis of quality traceability, so as to be true and detailed.

All management and operation personnel of the project department hold relevant certificates, and if the project quality is unqualified or quality accidents occur due to the absence of commanders and unlicensed operation, the person directly responsible shall be investigated for responsibility, and the leaders in charge shall be investigated for responsibility at the same time.

Measurement management system in construction: measuring instruments must be verified and labeled by the Technical Supervision Bureau, and cards should be established uniformly and kept by special personnel.

The complete set rate of metering equipment is 99%, the inspection rate is 100%, and the working inspection rate is 95%. Check and adjust the measurement of concrete mixing equipment regularly and irregularly.

Measuring instruments are often checked and recorded to eliminate measurement errors.

All measuring and testing instruments shall be properly stored.

Section 7 Technical Organization Measures to Ensure Project Safety in Production

Carry out the policy of "safety first, prevention first" in construction, and strictly implement the relevant laws and regulations of national and local governments and industries. The safety production goal of the project is to achieve "five noes" (that is, no death, no serious injury, no collapse, no accident, no fire), reduce general accidents, and control the minor injury rate below 3%.

7. 1 Safety Assurance System of Project Management Department

Establish a graded safety assurance system headed by the project manager, organize its implementation, strictly implement the responsibility system for production safety, and equip the construction site with full-time and part-time safety officers. Carry out the target management of safety production, implement it layer by layer, and put the responsibility on people.

7.2 Establish and improve the safety management system

All personnel of the project management department should receive safety training and education before starting work, especially for migrant workers and outsourcing workers, and take up their posts after passing the examination.

According to the characteristics and requirements of different parts and processes, safety disclosure shall be made to operators before construction, and shall be checked and implemented during construction.

Organized by the project manager, with the participation of relevant management personnel from various functional departments and construction areas, a joint safety inspection will be conducted at the construction site once a month. Each construction area shall be inspected once a week, and safety personnel and management personnel of ZuoYeDui shall inspect the site once a day and fill in the safety inspection log.

7.3 Construction site safety assurance measures

Under the leadership of the project manager, the project department is responsible for the formulation, supervision and management of safety technical measures. Set up a comprehensive management team for traffic safety, construction safety and civilized safety with the project manager as the head and the safety officer as the head of safety production technology.

7.3. 1 Establish a comprehensive management team for traffic safety, construction safety and civilized safety with the project manager as the head and the safety engineer as the head of safety production technology.

7.3.2 Do a good job in listing construction, publicize the project name, project scale, time limit for a project, responsible persons at all levels and schematic drawings of the project, and accept social supervision.

7.3.3 Before trench excavation, find out the elevation of underground pipelines, excavate sample holes, insert red flags, monitor and protect them at any time during construction.

7.3.4 Set totally enclosed safety barriers around intersections and trenches, set up red lights for warning, and assign special personnel to monitor and command passing vehicles.

7.3.5 According to the soil conditions, do a good job of sloping, dewatering or supporting grooves. Building materials shall not be piled up beside the ditch to prevent the earth wall from collapsing due to vehicle vibration. Construction personnel shall not change the construction design without authorization.

7.3.6 The mechanical excavation and transportation of earthwork shall be carried out by special personnel, and the personnel for trench slope cleaning and bottom cleaning shall keep a certain distance from the bucket.

7.3.7 During the construction period, all staff members must wear signs and safety helmets to enter the site.

7.3.8 Strengthen the safety management of on-site electrical appliances. All lines shall be installed in accordance with the regulations, and all electrical appliances shall be equipped with leakage protectors.

7.3.9 Strengthen on-site fire safety management, and set fire-fighting equipment in stacked flammable materials and key warehouses.

Section 8 technical organization measures to ensure the construction period

8. 1 shorten the construction preparation period and form normal construction capacity as soon as possible. Before the commencement date is determined, our unit will immediately organize the main project manager and other relevant personnel to enter the site, conduct detailed construction investigation, actively carry out construction preparations such as retest and temporary works, and shorten the construction preparation period.

Organize the transportation of construction machinery, equipment and materials. Machinery and equipment are urgently needed to enter the construction site within one week to meet the construction needs.

8.2 Establish efficient construction organization and effective management system. Deploy management personnel with rich practical experience and prime of life, and an integrated construction team with construction experience and strong combat effectiveness, which will be uniformly deployed according to the needs of the project to form an efficient and capable project management department and ZuoYeDui.

The management department leads and participates in all the work before construction, so that the construction team can be familiar with the engineering characteristics, the owner's requirements and the contents of the tender as soon as possible, and effectively realize our time limit commitment.

Strengthen on-site construction organization and command, so as to achieve correct command, effective command, high efficiency and strong adaptability. The management system, headed by the project manager and the project department engineer, makes decisions on major construction issues, determines major construction plans, and is fully responsible for the construction progress management.

Establish and improve the post responsibility system, the construction personnel shall establish posts and responsibilities, strictly implement technical standards and technological measures, clarify the construction discipline, and construct according to the design requirements.

Deepen the reform, improve the competition mechanism and incentive mechanism, implement risk contracting for all employees, implement tasks at different levels, link the construction progress with employee welfare, honor rewards and punishments, and fully mobilize the enthusiasm of all employees.

8.3 Adopt new technologies and equipment to speed up the construction progress, strengthen the dynamic management of construction, actively adopt new technologies and equipment, and rely on science and technology to speed up the construction progress: carefully arrange the construction, strengthen management, compile the implementation construction organization design on the basis of in-depth investigation, review and thorough understanding of design documents, earnestly implement it, and constantly optimize it in practice.

Pay special attention to the programmed operation and standardized construction of construction, form production capacity as soon as possible through reasonable organization and correct construction methods, improve construction progress and ensure construction quality.

Do a good job in the overall planning and network planning of the project, scientifically organize, reasonably arrange and balance production, and fully consider the influence of winter construction.

Firmly grasp the management and construction of key processes, control the circulating operation time, reduce the connecting time of processes and improve the construction efficiency.

Pay attention to relying on science and technology and technological progress. Adopt new technology and new workers, organize QC team to tackle key problems in construction technology, fully listen to reasonable suggestions from all sides, and carry out post technology innovation activities to ensure the smooth progress of construction production.

According to the requirements of the total construction schedule, the construction production plan is prepared, and compared and checked in the implementation process to find out the gap and reasons, improve management and promote construction. In order to realize the scientific and informational construction management, a microcomputer is used in the construction management.

8.4 Improve the degree of mechanized operation to improve the construction progress. According to the operation route in the construction scheme, mechanical equipment with sufficient, good condition and reasonable configuration shall be provided to undertake the construction tasks of this bid section.

Strengthen the dynamic management of management, use, maintenance and repair of construction equipment, improve the utilization rate of mechanical equipment, and make the mechanical equipment run safely, efficiently and with low consumption.

Establish a skilled and hard-working mechanical maintenance team to improve the intact rate of mechanical equipment and ensure the normal operation of each mechanized production line.

According to the production plan, order and technology in advance, carefully prepare the mechanical parts plan, and have enough inventory to ensure the supply of mechanical parts.

8.5 Strengthen material reserve, ensure material supply, prepare material supply plan in advance according to production plan, order and process, and have sufficient inventory to ensure the supply of engineering materials.

Send a special team to maintain the access road and ensure the smooth flow of materials transportation vehicles.

In winter construction, seasonal influence should be considered in advance, and sufficient materials and personnel should be prepared at the construction site to minimize the influence of winter on construction.

Section 9 technical organization measures to ensure civilized construction of the project

Project intends to seriously implement the provisions and requirements of the local construction site civilized construction management measures. Carry out modern management science, organize construction scientifically, do a good job in civilized construction on site, and strive for civilized demonstration sites in cities and districts.

Establish and improve the civilized construction guarantee system of the project department, implement the project manager responsibility system, and the project manager will be fully responsible for the civilized construction during the construction period.

9. 1 Specific organizational measures for civilized construction

9. 1.65438+

9. 1.2 The roads on the construction site shall be kept clean and tidy, and the temporary roads shall be hardened to meet the requirements of construction and driving. The site drainage system is complete and unobstructed.

9. 1.3 Bulk materials, finished products, semi-finished products and machines and equipment piled up on the construction site shall not encroach on roads and safety protection facilities, and the materials shall be packed in an orderly manner.

9. 1.4 The installation and use of on-site power lines and facilities must conform to the specifications and safety operation procedures.

9. 1.5 Brick wall enclosures shall be set up in the temporary area, gates shall be set at the entrances and exits according to the unified image of the enterprise, and a doorman system shall be established, with special personnel guarding and registration. Non-construction personnel are not allowed to enter the construction site, and closed management is implemented.

9. 1.6 The main management personnel at the site wear badges, and the construction personnel wear site passes.

9. 1.7 All foundation pits shall be provided with unified protective devices.

9. 1.8 During the construction process, keep the roads on site unobstructed and the drainage system in good condition, designate special personnel to remove the construction waste at any time, keep the scene clean and tidy, construct in the area where vehicles and pedestrians pass, and set up construction signs.

9. 1.9 During the construction period, do a good job in site security, assign special personnel to manage and take necessary anti-theft measures, establish and implement fire prevention management system, set up fire control facilities that meet the requirements and keep them in good condition, and take corresponding fire control safety measures when using flammable and explosive materials.

9. 1. 10 The construction work area is clean and tidy, the office and living area are bright and tidy, and charts are hung on the wall to receive visitors politely. Treat construction units, supervisors, designers and quality inspectors with civility and courtesy. Carry out healthy and civilized cultural and sports activities in your spare time.

9.2 Measures to reduce nuisance and environmental protection

9.2. 1 The environmental protection team of the project department strictly abides by national and local laws and regulations on environmental protection, formulates environmental protection measures for this project, and establishes the environmental protection team of the project department, with the project manager as the team leader, to be fully responsible for environmental protection during the construction period. The construction site should determine the responsibility area of environmental protection according to the zoning, and clearly list the responsibility area.

9.2.2 Measures to prevent dust pollution of roads on the construction site and roads near the construction site, assign special personnel to implement water spraying and dust prevention measures to ensure no dust. Covering measures should be taken for temporary soil on site to prevent sandstorm. Materials liable to generate dust such as cement and sand should be stored in the warehouse or tightly covered, and dust prevention measures should be taken during transportation. Environmental protection inspection shall be carried out before construction machinery enters the site, and those with excessive exhaust gas emission shall not be used.

9.2.3 Measures to prevent construction noise pollution Arrange the construction projects reasonably to avoid construction at night with high noise. Low-noise equipment and machinery are selected for construction, and noise reduction measures are taken for artificial construction noise. Strengthen management and control to minimize noise nuisance. The anti-noise anechoic room of high-noise mechanical equipment can effectively eliminate noise hazards.

9.2.4 Health and epidemic prevention measures The health management system of temporary living, office facilities and canteens at the site complies with relevant local regulations. The site and living area are always kept clean and tidy, and there is a special person who is responsible for cleaning, and the person in charge of health in each construction area is clear. Seriously implement the health management system. Domestic sewage and construction wastewater are discharged into the existing sewage pipeline after precipitation treatment. Set up enough garbage pools and trash cans, do a good job of sanitation regularly, clean up garbage, apply pesticides to kill insects, and store and consume domestic garbage and construction dregs separately.