Geotextile mat three dimensional plays an important role in afforestation, especially in slope protection

Geotextile mat three dimensionalis a new type of civil engineering material, also known as 3D vegetation net, which belongs to the reinforcement material in the new material technology field repeated in various materials in the national high-tech product catalog.

Geotextile mat three dimensionalis a kind of three-dimensional structure like loofah network mat used for grass planting and soil consolidation, with loose and flexible texture. 90% of the space can be filled with soil, gravel and fine stone. The plant roots can pass through it, and grow in a comfortable, orderly and balanced way. The turf after growing makes the mesh mat, turf and soil surface firmly combined. As the plant roots can penetrate into the ground 30 - - 1000px, forming a solid green composite protective layer. As early as 1997, this kind of slope protection product has been applied.

Under the premise of three-dimensional geonet mattress slope protection, many customers have repeatedly raised the question whether the grass planted on the slope protection will be destroyed by the flood. Many experts are also carefully considering this question, saying that the grass growing on the slope protection will definitely not withstand the flood erosion. Therefore, it seems that the client and the expert equate the grass planting on the slope protection with that on the conventional riverbank.

The grass growing on the conventional river bank is a natural slope composed of scattered soil particles with small shear strength. The grass itself is also a single one fighting alone there. Under the impact of the torrent, it is easy to be broken by each one, and it is easy to be washed out of the gap by the water in a certain part; With this gap, large areas of turf will soon be destroyed.

The grass growing out of slope protection with geotextile mat three dimensionalis quite different. First of all, the non-woven geotextile reinforced soil is used to enhance the shear strength of the slope soil and ensure the overall stability of the slope under the impact of the torrent. Then, a geotextile mat three dimensionalis laid on the non-woven geotextile reinforced soil slope surface for grass planting, and the plastic anchor nails with barbs are used to anchor in the soil under the mat, and grass is planted on the mat. The geotextile mat three dimensionalis a kind of three-dimensional structural material in which the grass roots are firmly locked. In particular, there is no such phenomenon that the grass on the natural soil slope is broken by each one, because at this time, the grass root, mesh pad and the soil under them have been connected into a whole, and with the passage of time, the grass root system will be more and more developed, and its firmness will be further strengthened.

The composite soil composed of grass root, geotextile mat three dimensionaland soil material can be seen as the "micro reinforced soil" in geotechnical engineering, which can greatly enhance the shear resistance of soil. It can be seen that the grass growing on the slope protection of geotextile mat three dimensionalis difficult to be destroyed.

In addition, the author briefly introduces the characteristics of geotextile mat three dimensional:

★ before the turf grows, geotextile mat three dimensionalcan protect the land surface from the erosion of wind and rain.

★geotextile mat three dimensionalcan firmly keep the grass seeds evenly distributed on the slope surface, and avoid the loss caused by the wind and rain.

★ the black net mat can absorb a large amount of heat energy, increase ground moisture, promote seed germination, and prolong plant growth period.

★Geotextile mat three dimensionaldue to the rough surface, the wind and water flow will generate numerous eddy currents on the surface of the mesh pad, thus generating energy dissipation effect, which will promote the deposition of the carried objects in the mesh pad.

★ the composite protective layer formed after the growth of plants can withstand the scour of high water level and high velocity (it can withstand 3 - 4m/s in two days and 5 - 6m/s in 4 - 5 hours).

★Geotextile mat three dimensionalcan replace permanent slope protection materials such as concrete, asphalt, block stone, etc., and be used for slope protection of roads, railways, rivers, dams, hillsides, etc.

★ it can greatly reduce the project cost, which is 1 / 7 of the cost of C15 concrete and dry block stone slope protection, and 1 / 8 of the cost of mortar block stone.

★ after laying on the surface of sand land, it can prevent the movement of sand dunes, greatly improve the surface roughness, increase the surface sediment, change the physical and chemical properties of the surface, and improve the local ecological environment.

★ special advanced composite technology;

★Geotextile mat three dimensionalis suitable for slope protection of municipal engineering of highway, railway, water conservancy and mine to prevent water and soil loss;

 ★ the preferred material for landscaping and environmental protection.