Introduction of lawn slope protection construction technology?

What is the basic situation of lawn slope protection construction technology in construction enterprises at present? What are the requirements for process construction and what is the basic situation? The following is the related content of "Architectural Terminology of Lawn Slope Protection Construction Technology Specialty" compiled by Zhong Da Consulting, and the basic situation is as follows:

Bian Xiao inquired through the architectural knowledge column of the construction industry encyclopedia website Construction Network, and sorted out the relevant technical conditions of turf slope protection construction technology. The basic contents are as follows:

First of all, let's learn about the construction technology of turf slope protection:

work progress

Engineering construction is divided into the following procedures: construction preparation → survey and lofting → site preparation → topsoil preparation and laying → grass seed sowing → completion cleaning → management and maintenance → handover and acceptance. In order to facilitate the construction enterprise personnel to further understand the specific content of turf slope protection construction technology, Zhong Da consulted and compiled relevant information, as follows:

Surveying and Setting-out Construction Surveying and Setting-out shall be carried out in accordance with the Standard of Code and Regulations for Engineering Surveying (GB 50076-93).

The measuring instrument adopts advanced theodolite and level.

Before measuring and setting out concrete, the grid should be laid out according to the construction scheme, with the spacing of 20 meters, and the layout and protection of control piles should be done well. 2.3, the whole lofting survey work must abide by the principle of "from the whole to the local, first control the broken part".

Topsoil laying

Before the project starts, the turf construction area should be arranged according to the drawings and requirements, and the ground should be leveled, the soil should be loosened and the topsoil should be laid according to the site conditions to ensure the survival of the turf.

site levelling

Clean up the excess sand in the dam slope and sundries that are not conducive to the growth of turf or affect the landscape.

Level the ground according to the outline size, shape and outline of the construction drawing plane. In line with the principle of "high shovel and low fill", finishing is carried out. Construction machinery adopts a small excavator and a small harrow loader with a capacity of 0.4 bucket. If the gentle slope cannot be constructed mechanically, it should be trimmed manually.

In order to loosen the topsoil, which is beneficial to the growth of plants, the topsoil should be deeply turned, and the topsoil with a depth of 20-30cm should be loosened mechanically, and large pieces of soil should be broken. Rubble, roots, stumps and other rubbish should be removed and transported to the place agreed by the supervisor for treatment, so that the undisturbed soil in the work area can form planting soil.

Improve and control some areas with poor soil physical and chemical properties. Targeted treatment.

Topsoil laying:

After the site is leveled and approved by the supervision engineer, the topsoil shall be laid immediately. When the topsoil is too wet or not conducive to laying, it shall not be laid.

After the laying is completed, the topsoil will be rolled to make the dam slope meet the design slope ratio, and the drainage ditch will be used for drainage.

Sow grass seeds

work progress

Construction preparation → soil preparation → grass seed selection → transportation → sowing → watering and fertilization → management and maintenance.

building material

Grass seeds: Seed selection should be drought-resistant, waterlogging-resistant, easy, with large vines, developed roots, short and strong stems and long growth time.

Fertilizer: The content of fertilizer shall not be lower than 10% ammonia, 15% phosphate and 10% potassium carbonate; Or choose the component content according to soil fertility. The mixed fertilizer consists of 10% organic fertilizer, 20% chemical fertilizer and 70% topsoil. Liquid fertilizer containing not less than the above effective nutrients can be used.

Water: The water used for planting or maintenance should not contain oil, acid, salt or other substances harmful to plant growth, and should meet the requirements of Water Quality Standard for Irrigation in Farmland (GB5084- 1992).

Construction requirements

Ground: according to the construction requirements of topsoil laying, arrange and prepare the ground.

Procurement and transportation of grass seeds: All purchased grass seeds shall comply with the existing laws on plant diseases and insect infections, and the relevant quarantine certificates shall be delivered to the supervisor after the grass seeds are selected.

Planting: according to the plane layout requirements of soil and water conservation project, mark the planting area, location and variety outline, and set out. When planting, the planting site shall be arranged and prepared according to the requirements of near-surface soil laying, and approved by the supervisor. In addition to paving the road, you can also lay it on a higher and steeper slope, that is, nail it at the foot of the slope, nail the turf on the slope with a small pointed pile or bamboo stick, and water it after planting.

Turf maintenance

After the turf planting construction is completed, we will start water conservation within the time approved by the supervisor until the project is completed.

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