Chapter I Project Overview
I. Introduction to the project
According to the geological situation of the whole line of my section is red sandstone geology, in order to ensure the quality of construction of the roadbed 95 area, the Ministry decided to carry out the lime improvement of the strongly weathered red sandstone, and planned to carry out a roadbed lime improvement test in the whole width of the K21+584-K21+800 in September 1st 2005, the test section is 0.216km long. On September 1, 2005, we planned to carry out the roadbed lime improvement soil filling test on the whole road section from K21+584 to K21+800, and the length of this test section is 0.216km. The soil extraction site was chosen in a mountain at the right of K22+480, and the laboratory of the ministry has already carried out the geotechnical test on the weathered soil of the red sandstone of the mountain and determined that the mixing amount of the lime in the improved soil is 5%, and the indexes of the improved soil after mixing the lime can meet the requirements of filling in the area of 95.
Chapter II: Personnel, equipment and material organization and supply
I. Personnel and equipment in place
According to the requirements of the contract, the main personnel and equipment of the Ministry have all entered the site, as shown in Appendix 3: "Table of Main Machinery and Equipment" and Appendix 4: "Table of Main Testing, Quality Inspection and Measuring Instruments and Equipment".
1, the main construction personnel
Project Manager Mechanical Deputy Manager
Director Engineer Constructor
Construction Manager QC
Measuring Manager Surveyor
Testing Manager Testing Manager
The second, the supply of materials
Main materials such as lime in Zhijiang purchased, and then transferred to the site by car. transfer to the site, other materials are purchased from Zhijiang County or Huaihua City and transported by car.
Chapter III Construction Organization and Plan
Section I Organizational Setup
This project is set up as the first level management organization of "Project Manager Department of Contract Section 5 of Huaixin Expressway", which consists of six sections: Engineering Technology Section, Quality Inspection Section, Mechanical and Material Section, Contract Section, Finance Section, and Office***, and the specific organizational form of the organization can be found in the Appendix 1, "Organizational Organization of the Contractor's Construction Site".
Section II Construction Plan Arrangement
According to the requirements of the overall construction plan, and combined with the characteristics of the Hunan climate, the construction of the 95 area of lime-amended soil is scheduled for after the rainy season, the planned date of commencement of September 1, 2005, the completion date of November 30, 2005, the total construction period of three months.
Chapter IV Construction Program and Construction Methods
I. Construction Preparation
1, 93 areas of the roadbed for full acceptance, acceptance of the indicators qualified before the construction of 95 areas.
2, construction equipment and supply of raw materials, finished products have been transported to the site.
Two, construction program
1, in the roadbed before filling according to the elevation of the lower bearing layer and each truck load to determine the size of the square grid, and then send a person to direct the pouring of soil, when the feed reaches 50m ~ 100m, the first bulldozer by the bulk pile, rough leveling, followed by the civilian workers to spread the lime, by the road mixer mixing machine, and then organizing the civilian workers to put the line, restore the control stakes. Every 10m a section, each section 8 points, measure its elevation, control the thickness of loose paving, by the grader fine leveling, by the 18T light wheel roller grinding, straight section from both sides to the middle of the grinding, super-high section from the inside to the outside of the grinding, each time to overlap the grinding 1 / 3 wheel width.
2, test road filling, each layer of rolling once after the compaction test, until the compaction degree reaches the specification requirements, to determine the number of times of rolling, in the roller after the collection of light to measure the elevation of each section of the control pile, and before the control of loose paving thickness of the elevation of the comparison, to determine the precise loose paving coefficient.
3, each layer of filling is completed, by the quality inspector for quality control of the roadbed, the main test items are smoothness, compaction, width, elevation, slope gradient, roadbed bending, as well as longitudinal slopes, transverse slopes, and so on, after passing the test, fill in the relevant application information, and report to the supervisory engineer acceptance.
4, taking into account the rainy days of the construction period, the Department of the construction of the corresponding emergency program, such as weather changes in the construction, immediately stop feeding, immediately into the filler has been leveled and crushed to prevent rainwater infiltration in the next sunny day before the construction of the sun until the filler to reach the optimum moisture content and then construction, to ensure that the quality.
Three, construction precautions
1, site mixing before the lower surface clean. Sieve the prepared soil over the size particles, and level it after paving and sprinkling to make the surface smooth.
2. Spread the lime evenly on the leveled surface.
3, timely check the moisture content of the mix, when it is equal to or slightly greater than the optimal value of mixing soil and lime to make it uniform.
4, construction should be used first light and then heavy roller rolling.
5, the use of water sprinkling to maintain, not less than 7 days.
Chapter V Quality Assurance System and Measures to Ensure the Quality of the Project
Section I Quality Policy, Quality Objectives
I. Our quality policy is: rely on science and technology to develop the Division, when the road and bridge soldiers; so that customer satisfaction, casting high-quality projects.
Two, the quality of the target: the project a pass rate of 100%, the project was rated as a good project.
Section II Quality Assurance System
I. Quality Assurance System
Our company has been awarded the ISO international quality certification in 98, the project to implement the ISO9001 quality assurance standards, and the establishment of quality assurance system. Quality assurance system consists of ideological assurance, organizational assurance, technical assurance, construction assurance, system assurance of five major components, the details of which are shown in the "Quality Assurance System Block Diagram".
Two, quality management organization and management responsibilities
1, quality management organization
Project manager, deputy project manager, technical personnel, quality inspection personnel involved in the composition of the quality management team is the highest quality management of the project's leading institutions, leadership and organization, implementation, and implementation of the project's quality objectives. Quality management organization see "quality management organization block diagram"
2, quality system responsibilities assigned
2.1 project manager quality responsibilities
Organization to develop specific measures, according to the quality plan, the implementation of the quality responsibility system, the full implementation of the quality management of the project works, hosting, reviewing and implementing comprehensive quality management measures.
2.2 Quality responsibility of the person in charge of technology
Organize to formulate quality assurance measures for the project works, strictly manage the construction technology and quality inspection of the project works, implement the quality plan of the project works, and strengthen the control of the construction process.
2.3 Quality responsibilities of the director of the laboratory
①According to the standards of inspection and testing, norms and regulations, responsible for the inspection of raw materials in production.
②Guide, check and supervise the inspection and test personnel to carry out their work, and actively deal with inspection and test work in the technical problems.
③Collect and organize inspection and test reports on time, and report them in time.
2.4 quality inspector quality responsibilities
Site station, grasp the quality of production dynamics, control of the construction process, timely feedback of various information to assist the leadership to analyze the quality of the situation, put forward corrective and preventive measures, supervision and implementation, and make quality records.
2.5 safety officer quality responsibilities
In-depth construction site, grasp the safety dynamics of production, illegal command and illegal operation, timely stop, the right to suspend production, and put forward corrective measures.
Organize safety inspections, make a written report on the problems identified, and make improvements on a deadline.
2.6Quality responsibilities of material workers
①Familiar with various material specifications and acceptance standards, and strictly control the incoming materials.
②Practice planning materials, strengthen the site management and use of materials.
③Establish the material in and out of the approval system, strict implementation of the system of receiving and issuing materials.
Section III of the project quality self-inspection system
Quality self-inspection system consists of the construction process control, self-inspection system, inspection process quality assurance measures, on-site quality management and other parts of the composition, see the "detection process quality block diagram", "on-site quality management mode of operation box", "on-site quality inspection flow chart".
1, the quality of the inspection process diagram
2, on-site quality management mode of operation diagram:
3, on-site quality inspection flowchart:
Section IV quality assurance measures
"Ensure the quality of the project, the control of the construction progress" is the quality of the construction of the project is the key to the smooth progress of quality The key. In order to ensure the quality of the project, control the construction progress, the use of effective quality assurance measures, and establish a sense of total quality management.
I, to ensure the quality of the roadbed project the main technical measures
1, before the start of the detailed implementation of the construction of the organization plan, to determine the responsibility of the sub-projects, make a good job of technical briefing.
2, selected roadbed construction personnel and equipped to meet the construction of machinery, testing, measuring equipment.
3, according to the design requirements and relevant technical specifications to develop roadbed construction work instructions and test plan, and report to the supervision engineer for approval.
4, reasonable selection of roadbed fill and determine the use of parts; filling and digging junction treatment to eliminate uneven settlement; strengthen the coarse-grained soil filling and rock-filled roadbed compaction; reasonable control of special soil construction status and use of special soil.
5, the original ground treatment and filling before rolling to achieve the required compaction.
6, in the filling process, at any time to detect the moisture content of the filler. If the moisture content of the filler does not meet the requirements, sprinkling or drying treatment, so that it reaches the range determined by the compaction test, and then leveled with a grader, roller rolling.
7, the earth and stone are compacted by heavy vibration roller, strictly control the compaction speed and the number of times of compaction to ensure the quality of compaction.
8. The back of the platform is filled with gravel soil with good water permeability, and the thickness of layered loose paving is not more than 15cm, and the dead center of the back of the platform is compacted by small tamper, and the compaction degree is not less than 95%.
Chapter VI measures to ensure that the schedule
A, schedule guarantee system
Schedule guarantee system by the organization, resources, technology, measures and systems to ensure that the economic guarantee is composed of five major parts of the various parts of the target requirements and then decomposed to the functional departments, construction teams, teams and individuals, sub-departments, levels of implementation, to ensure that the overall plan to achieve. For details, please refer to "Block Diagram of Schedule Guarantee System".
Two, the use of new technology, new equipment, improve construction efficiency
1, the construction of technical problems affecting the construction progress, and actively organize research. Fully absorb the rationalization of all aspects of the proposal and widely carry out the activities of technical innovation to improve the construction progress and economic efficiency.
2, strengthen the technical training, improve the construction personnel's operating technology proficiency, master and apply new technology, new equipment, new technology, reduce project costs, improve construction efficiency.
Three, strengthen the construction management, the implementation of the responsibility of the contracting system
1, the establishment of the project target responsibility system as the core of the management system. Decision-making by the project manager of major construction issues, to determine the major construction programs. When the actual progress lags behind the requirements of the construction organization design, put forward measures to speed up the construction progress.
2, the establishment, sound job responsibility system, the project personnel fixed positions and responsibilities, deepen the reform, the use of competitive bidding and performance pay system, so that the job responsibilities, job performance and economic benefits linked.
Chapter VII Safety Assurance System and Civilized Construction Management Measures
Section I Safety Production Assurance System
One, the production safety management objectives
This project to do to put an end to the workers killed in the line of duty accidents, to put an end to the fire and the traffic liability accidents, to put an end to all serious accidents, the safety of the rate of minor injuries is strictly controlled in the following 3 ‰.
Two, safety production assurance
The project department in the project before construction according to DBJ08-903-98 "construction site safety production assurance system" requirements to establish by the ideological assurance, organizational assurance, work assurance, system assurance, economic assurance of the five aspects of the safety production assurance see the "Safety Production Assurance System Block Diagram". At the same time, the preparation of safety construction guarantee plan and special construction organization design, and strictly according to the guarantee plan and special construction organization design requirements for the management and implementation.
Block diagram of safety production guarantee system
Section 2: Main measures and systems to ensure safety production
One: Safety production organization guarantee measures
Establishing a safety leading organization headed by the project manager personally and establishing a safety responsibility system at all levels of the department, recruiting regular safety meetings, checking the implementation of the rules and regulations on safety production, and establishing a safety reward and punishment system, which is described in detail in the "Safety production reward and punishment system". Production safety reward and punishment system, see "production safety organization chart".
Block diagram of production safety organization
Two, production safety management system
1, production safety management system for enterprise workers
Enterprise workers should consciously abide by the rules and regulations of production safety, and strictly do:
①construction workers into the site must wear helmets, and the correct use of personal labor protection products;
② three meters above the height of the work, there is no springboard or platform, fasten the safety belt;
③ work at height, are not allowed to throw down or up tools, materials and other items;
④ non-professional electrical and mechanical operators are prohibited from using or messing around with electromechanical equipment;
⑤ all kinds of electric machinery and equipment, there must be a reliable and effective safety grounding and lightning protection devices;
6 blasting and lifting area, non-operators are prohibited to enter the boom vertical below is strictly prohibited to stand;
7 special operators licensed to work.
2, the main functions of the production safety management system
Technical departments:
①Strictly comply with the requirements of production safety in the preparation of the project's construction design, and the preparation of safety and technical measures;
② of the enterprise's use of new technologies, new materials, new structures, new technologies, new equipment, the preparation of safety and technical procedures.
Construction and production departments:
①In the organization of construction and production, the construction and production departments should conscientiously implement the safety and technical measures in the construction design;
②Strict implementation of rules and regulations to ensure safe production and safe operating procedures;
③Scientific planning and management of the construction site, the establishment of a good order of safe production and civilized construction.
Mechanical power sector:
①Strengthen the inspection, repair and maintenance of machinery and equipment, early inspection, early prevention, prohibit the operation of machinery with disease, prohibit the car "three super";
② to ensure that the safety devices are complete, sensitive, reliable, to ensure the normal and safe operation of equipment.
Materials department:
Ensure the timely supply of safety facilities, materials, tools and labor protection supplies, and meet the quality requirements for safe production.
Three, safe production technology guarantee measures
1, construction machinery safety control measures
1.1 All kinds of machinery operators and vehicle drivers, must obtain the operation certificate, the machinery operators to establish a file, special management.
1.2 Operators must strictly implement the pre-work inspection system and work during the attention to observation and post-work inspection and maintenance system.
1.3 The cab or operation room should be kept neat and clean, it is strictly prohibited to store flammable and explosive substances, it is strictly prohibited to operate the machinery after drinking, and it is strictly prohibited to operate the machinery with disease or overloading.
1.4 It is strictly prohibited to repair, maintenance, adjustment and other operations on the running machinery and equipment.
1.5 command construction machinery operators, must stand in a safe place can be seen and should be clearly defined command contact signal.
1.6 the use of wire rope machinery, in operation is strictly prohibited to use gloves or other objects to contact the wire rope. When towing machinery or heavy objects with wire rope, personnel should be away from the wire rope.
1.7 lifting operations in strict accordance with the "safety and technical regulations for the use of construction machinery" (JGJ33-86) and "safety and technical regulations for construction and installation workers," the implementation of the requirements specified.
1.8 Regular organization of electromechanical equipment, vehicle safety inspection, the safety problems identified during the inspection, in accordance with the principle of "three do not let go" to investigate and deal with the development of precautionary measures to prevent the occurrence of mechanical accidents.
2, construction site electricity safety measures
2.1 construction site to develop a detailed construction of electricity organization design, "construction organization design" must be approved by the unit of technical approval and safety supervisor audit, and at the same time the development of electrical safety procedures, electrical installation procedures, electrical operation and management procedures and electrical maintenance and inspection system, to do a good job of handover, electrical maintenance operation records and grounding The electrical installation regulations and electrical operation and management regulations and electrical maintenance inspection system are also established.
2.2 construction site electrical equipment are in line with the Ministry of Construction "construction site temporary power safety technical specifications" (JC46 a S8), transmission lines using three-phase five-wire system and "three-level distribution of two-level protection" requirements, wires (cables) are in accordance with the requirements of the erection, do not drag, all types of boxes are in line with the Municipal Construction Committee, the standard power box, the main distribution system, the main distribution system, the main distribution system and the main distribution system, the main distribution system and the main distribution system. All kinds of electric boxes are in accordance with the standard electric boxes stipulated by the Municipal Construction Committee, and the total distribution box and sub-distribution box are installed in appropriate locations with repeated grounding protection measures, and the value of repeated grounding resistance is not greater than 10 ohms. Implementation of "a machine, a gate, a box" system.
2.3 construction site dedicated transformer neutral point directly grounded power lines, are used TN one S zero protection system, transformer neutral point grounding resistance is not greater than 4 ohms, the metal casing of the electrical equipment are connected to the special protective zero line.
2.4 power distribution room in line with the "four defense once" requirements, the establishment of a corresponding management system, configure the necessary safety supplies.
2.5 electrical equipment and transmission lines installed, must be accepted by the technical department before use. There are two electricians on duty for night construction, and the power supply should be cut off on holidays or after the work is finished.
2.6 The site of hand-held power tools and small electrical equipment to have a person responsible for the management of electrical equipment in and out of the warehouse should be carefully inspected and acceptance, and do a good job of daily inspection, repair and maintenance work, not allowed to operate with disease.
2.7 Low-voltage wiring and the use of all to comply with the relevant provisions of the lighting lines, lamps and lanterns and other installation height to meet the prescribed requirements. Cafeteria and bathroom lighting to use moisture-proof lamps and lanterns, and must be installed leakage protector, its leakage current is not greater than 30 mA, action time is not greater than 0.1 seconds. Flammable and explosive places to install explosion-proof appliances.
2.8 electrician licensed to work must wear good personal protective equipment, and strictly enforce the electrical safety regulations. Electrician work to strictly implement the "installed correctly, with safety, repair in time, dismantled thoroughly" of the sixteen-word policy.
3, safety protective equipment set measures
3.1 helmet: the quality of helmet must be tested by the relevant departments before use;
3.2 safety belts: the quality of safety belts must be tested by the relevant departments before use; two years after the use of safety belts, according to the provisions of the sampling test, the sampling test fails to be used only after replacement of the safety rope;
3.3 safety net: no damage to the net rope, and tie firm, taut, tight splicing; net width of not less than 2.6m, the mouth from the wall shall not be greater than 15cm, outside high inside low, every 3m support, angle of 45 °; standing net with the construction layer to enhance the network higher than the construction layer of more than 1m. Between the net and the net splicing tight, the gap is not more than 10cm.
4, safety inspection system
Development of production safety self-examination and self-correction methods, day and night inspections by full-time safety officers, regular safety inspection meetings, found that the problem and hidden trouble in a timely manner to rectify, deal with, and nip in the bud potential safety hazards.
Four, the construction site fire prevention measures
1, the construction site to implement the full closed security management, to eliminate interference with the entry of idle personnel, fire prevention and theft on duty.
2, the construction site oil depot, pyrotechnic supplies warehouse, acetylene, oxygen cylinder warehouse and other flammable and explosive locations hanging fire and smoke warning signs, and equipped with appropriate fire extinguishers, fire buckets, fire axes.
3, all the construction machinery and vehicles ships are equipped with the necessary fire extinguishers, fire axes.
5, flammable, explosive dangerous goods management system
1, all purchases of blasting detonators, explosives must be reported to the public security department for review.
2, blasting construction with pyrotechnic materials to set up a special warehouse, warehouse away from buildings and crowds, sealed, fire, explosion, moisture, by the person in custody, receiving and sending, strict system of collocation.
3, oil warehouse, fuel storage irrigation should be away from the living area, and do the appropriate protection, set up fire and smoke warning signs, and equipped with appropriate fire extinguishers, fire buckets, fire axes.
Sixth, safe construction of the reward and punishment system
1, all employees of the project to establish a top-to-bottom safety responsibility management system, strict inspection and implementation and through the safety leadership group to organize annual, quarterly, monthly evaluation activities, the failure to take fines, deductions and personal penalties, personal sanctions, transfer from the original post and other penalties.
2, through the project the whole process of safety construction management, the key safety points, fixed to the person, the site of the violation of safety education, resulting in safety accidents, the parties and responsible for the deduction of the month's bonus, and according to the size of the responsibility is responsible for the compensation of 1-12% of the cost of the damage.
Section III civilized construction management measures
A civilized construction program
Establish the civilized construction leading group with the project manager as the leading core, formulate the civilized management system, and set up the civilized construction guarantee system, see "Civilized Construction Guarantee System Block Diagram". Through the ideological and political propaganda of the party, government, industry and society to drive all the workers, grasp the site of civilized construction, through the site of civilized construction to drive the whole project of civilized construction, inertia checking implementation in place, the award of excellence and punishment, so as to achieve the goal of the provincial civilized construction of advanced units.
Civilized construction guarantee system
Two, civilized construction management measures
1, according to the requirements of the proposed road and other temporary works of the detailed design and description, submitted to the supervising engineer for approval.
2. The temporary works such as roads to be constructed include the installation of safety facilities such as signs, guardrails and warnings.
3. In case of conflict and interference between construction and existing roads, the diversion of construction or construction of temporary roads approved by the Supervising Engineer shall be completed before the construction.
4. If the existing road is used as a temporary road, it is necessary to prevent the transportation vehicles from damaging or injuring the road due to overloading. Transportation of large construction equipment and overweight pieces, should obtain prior permission from the road department before shipment. If necessary, the road should be repaired, widened, reinforced and set up the necessary traffic signs.
5. During the construction period, personnel should be equipped to maintain the temporary roads to ensure the normal use of temporary roads and structures.
6, according to the construction organization design reasonable arrangement of production and living facilities. Set up construction and management of offices, housing, health care, workshops, work sites, warehouses and storage yards and fire fighting facilities.
7, in order to avoid damage to the project and the safety and convenience of the people passing nearby, in the residence and construction site at the appropriate place, set up the necessary lighting, guards, fences, warning signs and other safety protection facilities.
8, organized by the project manager, respectively, in the site appearance, material management, environmental control and other aspects of comprehensive management to determine the responsible person, to take "clear standards, responsibility to the person" management target responsibility system, civilized construction in practice.
9, correctly handle the supervision, the owner of the relationship, according to the terms of the contract and supervision procedures, responsible for the owner.
Section IV Environmental Protection
I. Environmental Protection Targets
1. Ensure that the violation document is zero;
2. Pollutant emission meets the standard, and the noise and dust pollution in the city, sensitive area or the place where the contract has requirements are implemented according to the national standards.
Two, environmental protection measures
(a) dust control measures
1, construction machinery shoveling, unloading, transporting earth and other aspects of water sprinkler to reduce dust, four winds or more than the weather does not carry out earthwork.
2, the construction site as far as possible not to pile up the earth, need to pile up should be taken to cover, surface sprinkling, timely sprinkling and other measures to reduce dust.
3, the construction road should be hardened as much as possible, and the unhardened part should be sprinkled frequently.
4, in and out of the construction site of the vehicle with clay to be washed to prevent the mud on the road and scattered.
5, site mixing station area of the ground for hardening.
6, the designated person to clean the site, road surface, clean up, clean up the work site, should be sprinkled, the slag should be used containers for transportation, is strictly prohibited from the height to the ground to throw construction waste; equipped with a special sprinkler, the construction site and transportation roads are often sprinkled wet, reduce the dust.
7, the use of bagged cement on site, should slow down the unloading speed to prevent dust.
8, timely cleaning of construction debris, garbage, sorting, transported to the waste ground, to prevent secondary dust.
(2) construction sewage control measures
1, through the construction process modification, technological innovation and other methods to reduce wet work, reduce water consumption, chemical use, reduce the amount of sewage and pollutants generated.
2. Construction wastewater and sewage containing sediment are all treated with sedimentation before being discharged into the local water system, so as to prevent sewage from overflowing around and generating pollution. Sediment in the sedimentation tank by a person responsible for frequent cleaning, and the emptying of the sediment to do proper disposal.
3, close to the construction of living water sources, with trenches or dams with living water sources separated to avoid pollution of living water sources.
4, cleaning machinery, construction equipment wastewater is strictly prohibited from being discharged directly into the river, strict control of maintenance machinery waste disposal.
6, the cofferdam in the water construction using bags of soil or gravel, to avoid soil and water pollution of the river.