The ecological bag is a bag made of polypropylene (PP) or polyester fiber (PET) as raw materials, which is made of double-sided ironed needle-punched non-woven fabric. The thickness, unit mass, physical and mechanical properties, shape, fiber type, force mode, direction, geometric size, water permeability and equivalent aperture to meet the plant growth index of the UV-resistant ecological bag were strictly screened. It has the characteristics of UV-resistant (UV), anti-aging, non-toxic, non-combustion, non-extension of cracks, and truly realizes zero pollution. Mainly used in the construction of flexible ecological slope. Ecological bag slope protection and greening is one of the important construction methods in barren hills, mine restoration, highway slope greening, river bank slope protection and inland river regulation.

Ecological bag has excellent physical and chemical properties. This specially prepared material can resist the erosion of ultraviolet rays, is not affected by chemical substances in the soil, will not undergo qualitative change or decay, is permanently non-degradable and can resist the erosion of insect pests, is anti-aging, non-toxic, resistant to acid and alkali salt erosion and microbial decomposition, only permeable to water and soil, friendly to plants and afforestation. As a new slope component material, it has the following environmental universality advantages:

 

Main characteristics

◎ Moisture resistance

The raw material of the ecological bag does not absorb moisture, and the bag will not be damaged when moisture appears, and the bag will not be deformed and insoluble in contaminated liquid

◎ Chemical corrosion resistance (PH)

Extensive research and testing have shown that eco-bags are highly resistant to certain concentrations of acid-base chemicals and can be used in the vast majority of solid and heavily contaminated sites.

◎ Anti-biodegradation and animal damage ecological bag adopts special formula material, which does not support, absorb, do not help fungus growth, does not rot, does not mold, does not deteriorate. Ecological bags will not be digested by insects and related animals, and will not become food for gnawing animals (rats), termites, borers, beetles, whitebait moths, etc.

◎ anti-purple polymer

The ecological bag can withstand a high temperature of 150 degrees Celsius without melting, and can withstand a minimum temperature of -40 degrees Celsius.

◎ Anti-ultraviolet (UV)

◎ Eco-bag carbon ink and other anti-UV components

 

Advantage Features

In slope engineering, this new material can completely replace stone, cement and other materials, which can greatly reduce the cost of the project. The slope after construction has a surface that can be covered by vegetation, so that the excavated slope can achieve the effect of greening and form a natural ecological slope. It has the filtering function of permeable and impermeable soil. The slope formed in this way has a high degree of water permeability, which has a strong protective and stabilizing effect on soil loss, local mud (soil) rock flow, slope collapse, etc., and can become a permanent high stability natural slope.

 

Application areas

ecological restoration

On both sides of the river: the natural coastal environment where humans and wildlife coexist

◎ Mine greening: comprehensive utilization of mine gangue, scientific regulation of settlement area, greening of barren hills, purification of water and gas, to create a new era of mine ecological restoration and barren hills greening.

◎ Lake shore, surface landslide treatment, culvert mouth, drainage ditch, soil erosion, irrigation system, etc.

◎ Constructed Wetlands: Ecological Restoration

◎ Roof Greening

Basic Construction

◎ Road slope protection: railway and highway slope protection, suitable for excavation slope and fill slope.

◎ River and lake slope protection: suitable for rivers, lakes, reservoirs slope.

◎ Special applications: military facilities and flood control emergency, bunkers, flood control dams, etc.

Landscaping and Residential

◎ Vertical greening, garden art;

◎ Commercial residential quarters;

◎ Roof garden-style greening.

 

Specifications

Plane size range: (can be customized according to design and engineering needs)

Weight range of cloth: wide range, common ones are 100g, 125g, 150g, etc.

Fabric tensile strength: ≥ 4.5kN/m

Elongation at break of cloth: ≥ 40%

The formula for calculating the volume of ecological bags filled with soil after molding:

Length = length of ecological bag-(12~15)cm,

Width = width of ecological bag * 0.7

Height = height of eco bag * 0.4

For example: for a bag with an outer diameter of 810mm * 430mm, the approximate specifications after loading soil are 65cm in length, 30cm in width and 15cm cm in height (the specifications of ecological bags and the specifications of molding after loading soil can be designed according to actual requirements. The maximum allowable deviation is 2%)

 

Technical index reference

At present, there is no national and industry standard for ecological bags in China, and the technical parameters refer to the national standard GB/T 17639-2008 for the People's Republic of China geosynthetics filament spunbond needle-punched nonwoven geotextile.

 

development process

Eco-bag is a bag made of polypropylene (PP) or polyester fiber (PET) as raw materials made of double-sided sintered needle punched non-woven eco-bag cloth. It is applied to vegetation slope protection technology, and completes the system component synthetic material engineering, which becomes the ecological bag. After that, the ecological bag with its excellent physical and chemical properties.

 

Production requirements

On the premise of fully considering the requirements of many disciplines such as material mechanics, water conservancy, biology, botany, etc., the thickness, unit mass, physical and mechanical properties, shape, fiber type, force mode, direction, geometric size, water permeability and equivalent aperture to meet the requirements of plant growth are strictly screened. It has the characteristics of anti-ultraviolet (UV), anti-aging, non-toxic, non-combustion, and non-extension of cracks, it is truly zero pollution.

The ecological bag has a targeted water-permeable and soil-impermeable filtering function, which can not only prevent the loss of filling (soil and nutrient mixture), but also realize the normal exchange of water in the soil, and the water required for plant growth has been effectively maintained and timely The supplement is very friendly to plants, allowing plants to grow freely through the bag. The root system enters the foundation soil of the project, such as countless anchor rods to complete the re-stabilization between the bag body and the main body, the longer the time, the stronger, further realize the purpose of building a stable permanent slope, greatly reducing the maintenance cost.

The functional design of ecological bags with special functional requirements is a necessary condition for the stability of flexible slope structures.

With equivalent aperture proof:

1. aperture is too large (bag body, material is too thin)

⑴ When the quality of bagged materials is washed by rain and running water, a large amount of loss will occur, resulting in a great reduction in unit weight, a great change in the mechanical design value of the tableland, and the mechanical structure will be destroyed.

⑵ Bagged materials are easily lost under water flushing, and the settlement amplitude greatly exceeds its natural settlement amplitude, which does not match the design scheme of tableland, resulting in collapse.

2. aperture is too small (bag material is too thick)

(1) It will hinder the formation of vegetation growth and root extension, and seriously affect the structural stability of flexible slope.

⑵ Under a certain specification, the weight of the bag is a fixed value in the design of the mechanical structure of the flexible slope, and the aperture is too small to reduce its water permeability. When a large amount of water penetrates, its unit weight is greatly enhanced. The numerical value of the force structure of the tableland increases, resulting in structural deformation and collapse.

 

Product specifications and performance parameters

Project	Unit	Detection value	Technical indicators	Single judgment
Bag size	cm	81.5 × 44.1	81.5 × 44	Compliant
Mass per unit area (single layer)	G/square meter	135	≥ 100	Compliant
Thickness (single layer)	mm	0.71	/	/
warp breaking strength	kN/m	6.62	≥ 4.5	Compliant
Meridional elongation at break	%	53.6	40~80	Compliant
Weft breaking strength	kN/m	6.78	≥ 4.5	Compliant
Elongation at break in weft direction	%	68.6	40~80	Compliant
CBR bursting strength	N	1038	≥ 800	Compliant
vertical permeability coefficient	cm/s	0.233	≥ 0.0172	Compliant
Equivalent aperture O	mm	0.151	0.07~0.20	Compliant