Construction of Geotextile Horse Farm

Slope Trimming：Trim the slope surface according to the design requirements to make the slope gradient meet the regulations. Generally, it should not exceed 1:1.5, and the slope surface should be flat and smooth, without obvious unevenness and pits.

Laying Direction：Determine the laying direction of the geotextile according to the slope direction and terrain characteristics. Generally, it is laid from top to bottom along the slope to facilitate drainage and prevent the geotextile from sliding.

Unfolding and Laying：Fix the geotextile at the top of the slope, and then slowly unfold it along the slope. During the laying process, pay attention to making the geotextile closely fit the slope surface to avoid wrinkles and suspension. It can be laid by manual or mechanical assistance. Fix the geotextile on the slope surface with U - shaped nails or wooden stakes at a certain distance. The fixed spacing is generally 30 - 50 cm.

Lap Treatment：Adjacent geotextiles need to be overlapped. The lap width is generally not less than 10 cm. At the lap joint, connect and fix it with U - shaped nails or iron wires to ensure a firm connection and form an integrated protection structure.

Sowing Method：The grass seeds can be sown by hydro - seeding or manual broadcasting. For hydro - seeding, mix the grass seeds, fertilizers, water - retaining agents, water, etc. in a certain proportion and then evenly spray them on the geotextile through a hydro - seeder. For manual broadcasting, evenly mix the grass seeds with an appropriate amount of fine soil, fertilizers, etc. and then scatter them by hand on the geotextile. The sowing should be even to avoid missed sowing or local over - density.

Covering with Thin Soil：After sowing, cover a layer of thin soil on the geotextile. The thickness is generally 0.5 - 1 cm, just enough to cover the grass seeds. The thin soil should be loose, fertile and free of impurities. After covering, gently compact it to make the soil closely combine with the geotextile and grass seeds.

Watering and Maintenance：Water in a timely manner after sowing to keep the slope surface moist, which is beneficial to the germination and growth of grass seeds. In the early stage of grass seed germination, the number of watering times should be appropriately increased. As the grass seedlings grow, gradually reduce the number of watering times, but ensure that the soil always maintains a certain humidity. When watering, avoid large - water scouring, and the sprinkler irrigation or mist irrigation method can be adopted.

Fertilization Management：Fertilize in a timely manner according to the growth situation of grass seeds and the soil fertility status. In the early stage after grass seed germination, apply some nitrogen fertilizers to promote the growth of grass seedlings. After the grass seedlings grow to a certain stage, increase the application of phosphorus and potassium fertilizers to improve the stress resistance and root development of grass seedlings. The amount of fertilizer should be determined according to the soil fertility and grass seed requirements to avoid excessive or insufficient fertilization.

Appearance Inspection：After the completion of construction, conduct an appearance inspection on the laying of the geotextile and the growth of the vegetation. Check whether the geotextile is laid flat and firmly, and whether there are any damages, displacements, etc. Check whether the germination rate of grass seeds meets the requirements, whether the vegetation grows evenly and densely, and whether there are any obvious bald spots or pest and disease problems.

Vegetation Coverage Detection：Adopt the method of sampling survey, select several sample plots on the slope surface, measure the vegetation coverage area in the sample plots, and calculate the vegetation coverage rate. Generally, it is required that the vegetation coverage rate reaches the design requirements within a certain time, such as not less than 80% - 90% within 3 - 6 months.

Slope Stability Evaluation：Evaluate the impact of the geotextile greening on the slope stability through observation and some simple detection methods. For example, check whether there is soil erosion, landslides, collapses, etc. on the slope surface, and observe the reinforcement effect of the vegetation roots on the soil.

Prevention of Human Damage：Set up warning signs to prohibit irrelevant personnel from entering the construction area to avoid human trampling, picking or damaging the vegetation. Educate the construction personnel to improve their awareness of protecting the vegetation.

Avoidance of Mechanical Damage：During the subsequent construction or daily maintenance, avoid the rolling, collision and other damages of construction machinery and vehicles to the geotextile and vegetation. If other operations need to be carried out near the greening area, necessary protective measures should be taken.

Prevention and Control of Pests and Diseases：Regularly check the vegetation and promptly detect and prevent pests and diseases. Adopt a combination of biological control, physical control and chemical control methods to minimize environmental pollution and protect the healthy growth of vegetation.