First, the characteristics of professional engineering The landscape greening project around the ancient city of Suzhou has a large workload, heavy tasks and tight construction period. The selection and configuration of plant materials in this greening project has the following characteristics: 1. There are many kinds of plants. Plant species include evergreen trees, deciduous trees, evergreen shrubs, deciduous shrubs, evergreen grass local cover plants, aquatic plants, herbs and flowers. A series of fruit trees have been added to the tree. There are 70 species of plants, including 9 evergreen trees and shrubs, 34 deciduous trees and shrubs, 8 fruit trees, 2 bamboos, 9 ground cover plants and 8 aquatic plants. 2. The landscape effect is obvious, and the combination of trees, shrubs and grass (ground cover) can be formed after the project is completed; Collocation of flowers, fruits and leaves; High, medium and low are scattered, with rich levels and distinct seasons; The artificial plant community with beautiful spring, birds and flowers and evergreen seasons shows biodiversity and wetland ecological landscape. 3. According to the schedule of the project, deciduous trees should be planted first, then evergreen trees, deciduous trees in winter and autumn and evergreen trees in spring, so as to improve the survival rate and preservation rate of planting. 4. This project is a medium-sized and highly specialized project. According to 70 kinds of plant materials used in the project, this paper briefly introduces the applicable conditions and key points of planting and maintenance of each variety, and supplements them to the supervision implementation rules in the form of attachments for reference. Two, supervision is based on the national laws and regulations on engineering construction, engineering construction documents approved by the relevant departments, construction supervision contract and construction contract, professional supervision and management of the greening landscape project entrusted by the project construction unit. The supervision basis during and after the project implementation is: 1, Urban Greening Regulations of People's Republic of China (PRC) and the State Council; 2. People's Republic of China (PRC) industry standard Code for Construction and Acceptance of Urban Greening Projects (CJJ/T82-99); 3. Regulations of Jiangsu Province on Urban Greening Management; 4. Quality inspection and evaluation standards for special sub-projects of garden civil engineering in Jiangsu Province; 5. Technical Specification for Planting Urban Garden Plants in Jiangsu Province (for Trial Implementation); 6. Technical Specification for Conservation of Urban Landscaping Plants in Jiangsu Province (Trial); 7, "Jiangsu Province Landscaping Engineering Quality Evaluation Standard (Trial)". Three. Supervision content 1. Assist the construction unit in the feasibility study of the project; 2. Optimize the design scheme, design unit and construction unit; 3. Review the design documents; 4. Controlling project quality, cost and construction period is called "three controls"; Supervise and manage the performance of construction contracts, safe production and information processing, which is called "three management"; Coordinating the working relationship between the construction unit and relevant parties in project construction is called "one coordination". Four. Key points for supervision and control of garden sketches (1) The stacking and cross section of rockfill (including boulder peak) 1 must meet the design requirements; 2, the foundation must comply with the design requirements, must be solid, solid, stable and dense; The dimensions of foundation piles and earthwork must be controlled within the allowable deviation; 3. Watching the stone peak alone depends on the size of the space; 4, stone, stone color, shape must meet the design requirements; 5. Stacked overlap should be cleaned up, the stone should be placed firmly, the texture trend is consistent, and the stone should not have obvious cracks, damage and peeling; 6. Lap sealing must be sealed with high-grade cement mortar grouting hook, and the mortar width should be 1.5-2CM, which is smooth by the way and similar in color to rock filling (boulder peak); 7. Rockfill bodies (including solitary stone peaks) must be supported or hoisted after being stacked or erected, and can only be removed after the mortar strength reaches the standard and is approved by the supervisor; 8. The main ornamental surface and height of rockfill body (including boulder peak) should meet the design requirements. (2) The layout and positioning of lying stone, point stone, stubborn stone 1, lying stone, point stone and stubborn stone must meet the design requirements; 2, lying stone, stone, stone foundation to achieve a certain degree of compactness, beware of instability and slippage; 3, lying stone, stone, stone placed quantity must comply with the design requirements; 4. The stone quality, color and shape of lying stone, point stone and stubborn stone should basically meet the design requirements; 5, lying stone, stone, stone ornamental surface should comply with the design requirements; 6. The mountain ranges of lying stones, pointed stones, stubborn stones and stacked stones (including Gushi Peak) are consistent, suitable and complement each other; 7. The plant configuration of stacked stones (including solitary stone peaks), lying stones, point stones and stubborn stones should be few but fine, few and beautiful, rich in connotation and tasteful. (3) Lu Yuan 1, the width and depth of subgrade excavation in Lu Yuan must meet the design requirements, and the construction enterprise can proceed to the next working procedure only after the inspection by the trench supervisor and the inspection sheet for concealed works is issued; 2. The strength and compactness of subgrade must meet the design requirements; 3. The thickness of ballast and gravel of subgrade cushion must meet the design requirements; 4, mortar and concrete must comply with the design requirements, completes the mixture ratio test. When using commercial concrete, relevant commercial concrete data must be issued, and mortar (strength) test blocks should be prepared at the same time; 5, concrete pavement in the maintenance period (14-28), the construction enterprise must do a good job of maintenance in accordance with the provisions; 6, concrete pavement must be clean, no cracks, no peeling, no potholes, no water; 7. The garden road pavement is made of granite, and the joints must be smooth and reasonable, and the cracks and slopes meet the design requirements and construction specifications, without water accumulation; 8, pebble paving and ash should be uniform, beware of peeling phenomenon; 9, pebble narrow surface should not exceed 3CM, pebble embedded in mortar depth should be greater than 1/2 particles; 10, pebble arrangement should not be too fine, and it should meet the design requirements; 1 1, granite pavement and pebble pavement must be coordinated in color matching, and the color difference should not be too large; 12, Sidestone: 1) Sidestone can be placed vertically and horizontally, but it must be straight; 2) The edge of the kerb shall be built within 5M, and the error shall not exceed15mm; ; 3) Corner contact of kerbs must be smooth and the height should be strictly protected. (4) The flower bed 1, and the layout and positioning of the flower bed must meet the design requirements; 2. The width of the flower bed base groove must meet the design requirements; The density of the trough bottom must meet the design requirements; 3, brick or stone along (edge) must comply with the design requirements and construction specifications; 4, mortar mixture ratio must comply with the design requirements; 5, brick plaster thickness, flatness to meet the design requirements; 6, stick stone to smooth, seam to straight. (5) the flower gallery (frame) 1, and the flower gallery (frame) must meet the design requirements and construction specifications; 2, flower gallery (frame) base groove must comply with the design requirements, its strength, compactness, material thickness must comply with the design requirements and construction specifications, supervision inspection groove and issue a concealed engineering inspection sheet, the construction enterprise can proceed to the next process; 3, mortar mixture ratio must comply with the design requirements; 4, flower gallery (frame) frame body reinforcement, binding and reserved steel solder joint connection must comply with the design requirements; 5, flower gallery (frame) column, corbel beam pouring concrete, the template must be solid, pressure-resistant, seamless, no slurry leakage, the inner surface of the template must be smooth; Before pouring concrete, the construction enterprise must fill in the inspection form, and the next working procedure can be carried out only after it is approved by the supervisor; 6, the construction enterprise must strengthen the management of pouring, fixed personnel watering on time, make the pouring in a wet state, at the same time do a good job of strength block test, block must be made of steel mold; 7. After the curing period and strength are reached, the construction enterprise can dismantle the formwork only with the approval of the supervisor; 8, column and bracket beam installation, must be carried out in strict accordance with the construction plan, to ensure the quality and safety, to ensure the stability of the framework, when necessary, can set up scaffolding to carry out the operation, the verticality of the column must be controlled within the allowable deviation (5MM); 9, column, bracket beam surface treatment must comply with the design requirements. Five, the control points of garden plants in the preparation stage before planting 1. Before construction, the supervision department should go to the site to check the plane and elevation of the design drawings. If the drawings are inconsistent with the actual situation, the supervision department shall report to the construction unit (owner) in time, and the construction unit shall require the design unit to make design changes; 2, adjust or dismantle the plants in the original green space, when necessary, with the consent of the construction unit, can move out of the original green space plants; 3. When underground pipelines or overhead lines are found in the tree hole during construction lofting and positioning, the construction must avoid according to the specifications, select another point, fill in a change order at the same time, and implement the next working procedure after being approved by the supervisor and reported to the construction unit; 4, the construction unit shall provide the supervision department with planting design drawings (plan, elevation, profile, landscape) design description, design budget and superior approval and other information; 5. The regulatory authorities should urge the construction enterprises to make a detailed investigation on the environment, soil quality, underground water level, underground pipelines, buildings, trees, overhead lines and adjacent spaces in the planting area, and formulate technical measures to ensure survival; 6, supervision department to urge the construction enterprises to make water, electricity, transportation organization plan; 7. The supervision department urges the construction enterprises to do a good job in earthwork balance plan, respectively implement the source and destination of earthwork and construction spoil, and prepare the construction plan and emergency plan according to the garden sketch and greening project progress. Key points of control in the construction stage of garden plants (1) Key points of quality control of garden plants 1. Garden plant varieties must meet the design requirements. It is forbidden to have serious pests and weeds when entering the seedlings, and it is forbidden to have quarantine pests and weeds, no fertilizer damage and no drug damage, otherwise the seedlings will be returned; 2, plant material specifications must comply with the design requirements, a little margin, after pruning to ensure the specification requirements; 3. Tree quality requirements: a) The trunk must be straight, the bark is intact, the crown is intact, and the feet do not fall off; B) vigorous growth, developed root system, full crown, good growth, no partial crown, small ancient trees are strictly prohibited from entering the site; C) The soil ball is complete, firmly bound, and the root system is not exposed; D) Five quantitative indexes such as tree height, crown diameter, branching point, DBH and soil ball size must be met, of which five are excellent and three are qualified; Two quantitative indicators are unqualified; E) The construction enterprise must produce the seedling list (certificate) and the tree quarantine certificate. 4. Shrub quality requirements: Shrubs must have a complete crown, no partial crown, no foot, and strong trunk branches; The soil ball is complete and firmly bandaged. At the same time, we must meet the four quantitative indicators of height, crown diameter, ground diameter and soil ball size, of which four are excellent; Three quantitative indicators are qualified; Those who reach the quantitative index of 1-2 are unqualified. 5. Quality requirements of the ball: the ball must be leafy and have a complete crown shape, which meets the design requirements. At the same time, three quantitative indexes, crown diameter, height and soil ball size, must be met, three of which are excellent; Reaching two quantitative indicators is qualified; Failure to reach 1 quantitative index. 6. Quality requirements of color block plants: color block plants must grow healthily, with many branches, perfect crown shape, no foot loss and no pests and diseases. At the same time, it must meet three quantitative indexes: height, canopy diameter and soil ball size, and three of them are excellent; Reaching two quantitative indicators is qualified; Failure to reach 1 quantitative index. 7. Quality requirements for annual and biennial herbaceous flower seedlings: They must be robust transplanted seedlings (the height varies with varieties), and Mao Ye has complete root system with more than 3-4 tillers. At the same time, plant height, crown diameter or tiller number must be met, and both quantitative indicators are excellent; 1 The quantitative index is unqualified. 8. Quality requirements of perennial flowers: Perennial flowers must have developed roots and 3-4 buds. 9. Quality requirements of tubers and bulbs: Tubers and bulbs must be complete, plump, free from rot, pests and rodents, and have more than two bud eyes or buds. 10, climbing plant quality requirements: climbing plants must have strong main vines and developed roots, and the seedling age is more than 2 years. 1 1. Quality requirements for grass blocks and rolling lawns: 1) Grass blocks and rolling lawns must grow evenly, with dense roots and no exposed spots; The height of grass is not more than 5CM, the thickness of soil is not less than 2CM (3CM tall fescue), and the weeds are not more than 5%; The length and width of grass blocks and rolls are moderate, and the specifications of each roll (block) are consistent. 2) Grass for rhizome propagation, with no more than 2% weeds and no pests and diseases; 3) The thickness of planting belt is less than 1CM, the seeds are evenly distributed and full, and the germination rate is over 95%. 12. Quality requirements for grass seeds and flower seeds: 1) Grass seeds and flower seeds must have factory inspection reports or descriptions indicating seed quality, such as variety, strain, place of origin, production unit, harvest year, purity and germination rate. Before use, germination rate test must be done to adjust sowing amount. Do not use expired and pest-infested seeds. 2) It is illegal to use it without showing the seed germination rate test report. (2) Inspection methods and measures for the quality of garden plants 1. After the garden plants enter the site, the construction enterprise must fill in the inspection form for the materials and equipment entering the site. 2. The construction enterprise adopts the method of random sampling for the garden plant materials entering the site, selects a certain proportion of plants for quality evaluation, and fills in the results in the Quality Inspection and Evaluation Form of Plant Materials Sub-projects, and reports the inspection sheet and quality evaluation form to the greening supervision engineer of the project supervision department in time. 3. After receiving the above information, the supervision engineer shall carry measuring tools for re-inspection. 1) inspection quantity: randomly select 10% of trees and shrubs according to the quantity, not less than 10 plants or all of them; Not less than 20 shrubs or all shrubs, each with a point; Lawn and herbaceous land are randomly selected according to 3% of the area, taking 3M2 as a point, but not less than 3 points; Randomly select 5% flowers according to the quantity, and 10 plant is 1 minute, but not less than 5 points; 2) Professional supervision engineer will fill in the inspection results in the nursery list of * * * greening project. 3) If any plant materials that do not meet the design requirements are found in the re-inspection, the construction enterprise shall be immediately notified to deal with the plant materials that do not meet the requirements, and the excellent plant materials shall be resolutely returned and supplemented. 4) The project supervision department shall timely deliver the on-site material and equipment use inspection form, plant material component project quality inspection evaluation form and * * * green chemical engineering seedling list to the construction unit; 5) For a large number of colored shrubs, in addition to spot-checking the quantity according to regulations, professional supervision engineers can also take the method of standing by to check the quantity, and can also check whether a certain number of plant materials meet the quality requirements; 6) For trees (evergreen trees above DBH 15cm, deciduous trees above 25CM) or extra-large trees, professional supervision engineers must check in advance, go deep into the source of seedlings, and guide seedling selection, seedling number, emergence, trimming and shipment; Strictly control the plant materials that do not meet the requirements of quality specifications, strictly control the pass, and prohibit any unqualified seedlings from entering the site. 7) The supervision department of big trees or extra-large trees should measure their individual trees and register them according to different blocks.
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