Planting bag, also called green bag, planting grass bag ------ MADE of non-woven fabric and shade NET EXCELLENT UV resistance, long durability, water permeability and air permeability.

The 3D soil and water conservation slope protection plant greening system is composed of "plant bags + connecting clips + vegetation planting" through a stable stacking method in a regular triangle. In addition, the well-developed root system penetrates the ecological bags and penetrates the slope soil in the later stage, making the slope more stable. The soil retention and water seepage functions of the planting bags reduce the static water pressure on the slope, ensure the normal exchange of water in the soil, provide the medium for the survival of vegetation, and make the greening effect of the slope more obvious and effective.

Many planting bag slope protection projects, especially those for railway and highway slopes. The slope protection formed by the stacking method of planting bags is due to natural settlement; The top of the slope has subsided due to the vertical pressure from trains, cars, etc. Or the hydrostatic pressure of the slope will cause the slope to be subjected to a powerful horizontal shear force, thereby affecting the stability of the slope.

The characteristics of the plant growth bag:

1. It is easy to install and lay, lightweight and convenient for transportation. ,

2. The survival rate of grass seeds is high.

3. It has a high tensile strength, so there is no need to worry about the grass seed paper tape being torn.

4. The grass seeds are evenly distributed, avoiding uneven density of the lawn in the later stage.

5. There is no need to spray grass seeds again, which avoids the waste of grass seeds and reduces the construction procedures.

6. The types of grass seeds can be changed at will, and different grass seeds can be replaced as needed.

7. After the grass seeds grow out in the later stage, the glass fiber geogrid serves as a reinforcing layer. Even when the grass dies in winter, it can achieve the effect of slope protection more firmly and effectively reduce soil erosion in winter.

8. Low cost and simple production. In conclusion, the "three highs" - high survival rate of grass seeds, high production efficiency, and high construction efficiency - determine the irreplaceable position of plant growth bags in greening.

Welding specification:

Lap joint: The lap width should be greater than 15cm.

Hot welding: It is suitable for slightly thicker geotextile membrane base materials, and the lap width of the weld seam should not be less than 5CM.(Adhesive bonding is not recommended. Long-term water immersion is prone to delamination, and the anti-seepage effect is poor.)

1) The clearance of the embankment slope, the leveling of the site, the removal of all sharp corners and debris, the backfilling and compaction of the under-slope, and the slope cutting and leveling of the over-slope, after passing the supervision's acceptance inspection, provide a working surface for the laying of the composite geomembrane.

2) For the convenience of construction and to ensure the quality of splicing, the composite geomembrane should be as wide as possible to reduce the amount of on-site splicing. Before construction, according to the width of the composite geomembrane and the on-site length requirements, it should be cut within the unit and spliced into blocks of the required size, rolled on steel pipes, and manually transported to the working surface for laying.

1) Laying method of composite geomembrane

The laying of composite geomembrane is divided into two parts: the laying at the bottom of the channel and the laying on the slope. Laying method: Roll and lay horizontally along the axis of the channel. After the slope is laid on the slope and passes the acceptance inspection, it should be rolled out along the axis of the slope and connected to the composite geomembrane at the bottom of the channel in a T-shaped manner.

2) Technical requirements for laying composite geomembrane:

The laying should be carried out in dry and warm weather. To facilitate splicing and prevent stress concentration, the laying of the composite geomembrane adopts a wavy relaxation method, with an excess of about 1.5%. After spreading, it should be leveled and pulled apart in time. The composite geomembrane should fit the slope surface flat and without protrusions or wrinkles. Construction personnel should wear flat cloth shoes or soft rubber shoes, and it is strictly forbidden to wear spiked shoes to avoid damaging the geomembrane. If any damage to the geomembrane is found during construction, it should be repaired in time.

During transportation, composite geomembrane should not be dragged or pulled hard to avoid being punctured by sharp objects.

1. It should extend from the bottom to the top. Do not pull it too tight. Leave a margin of 1.50% to allow for local sinking and stretching. Considering the actual situation of this project, the slope adopts the laying sequence from top to bottom.

2. The longitudinal joints of two adjacent pieces should not be on the same horizontal line and should be staggered by more than 1 meter from each other.

3. The longitudinal joints should be at least 1.50m away from the dam foot and the bend foot, and should be set on a plane.

4. Slope first, then field bottom;

When laying on the slope, the direction of the membrane extension should be basically parallel to the major slope line.

Three-dimensional drainage net (also known as three-dimensional geotextile drainage board, tunnel drainage board, and drainage board) is composed of a three-dimensional plastic net with water-permeable geotextile adhered to both sides. It can replace the traditional sand and gravel layers and is mainly used for drainage in landfill sites, roadbeds, and the inner walls of tunnels.

In fact, the lap joint method of the drainage net is very simple:

Adjust the direction of the geosynthetic material so that the length direction of the material roll is perpendicular to the road.

2. Composite geotextile drainage nets must be joined at certain ends, and the geotextiles on adjacent geotextile net cores should be overlapped along the material rolls.

3. Connect the geonet cores of adjacent geosynthetic material rolls with white or yellow plastic clips or polymer bands to link the material rolls. Connect with tape every 3 feet along the length direction of the material roll.

4. The direction of the geotextile where the three-dimensional drainage net is overlapped should be consistent with the direction of the filling material stacking. If geosynthetic materials are laid between the foundation/base layer and the subbase layer, continuous wedge welding, flat head welding or sewing should be carried out to fix the upper layer of the overlapped geotextile. If sewing is required, it is recommended to use the flat head sewing method or the general sewing method to meet the length requirements of the stitches.

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