CN108513763A - A kind of antiscour anti-erosion ecological vegetation gauze pad - Google Patents

Abstract

The invention belongs to the technical field of flexible slope protection, and in particular relates to an anti-scouring and anti-erosion ecological vegetation mesh pad. Its main technical scheme includes a folded net, grass seed sticky paper and a top net layer are laid on the upper part of the folded net, and a geotextile layer and a ground net net layer connected and fixed are sequentially arranged on the bottom of the folded net. The ecological vegetation mat of this structure can not only fix the soil and protect the slope, but also effectively overcome the limited thickness of the multi-layer composite ecological protective blanket, and the rainwater flow penetrates into the bottom of the protective blanket, causing soil erosion at the bottom, forming a slope collapse and causing Slope vegetation ecological environment damage occurs, and it has the characteristics of simple structure and convenient construction.

Description

An anti-scouring and anti-erosion ecological vegetation mesh pad

technical field

The invention belongs to the technical field of ecological soil stabilization, and specifically relates to an anti-scouring and anti-erosion ecological vegetation net pad used on steep slopes on both sides of roads, railways and rivers, and on slopes with poor water and soil conservation ecology.

Background technique

Spraying of foreign soil is the main construction method of ecological slope protection, that is, the foreign soil is formed into a granulated structure with agglomerates, and the reinforcing fibers play a role in reinforcing the network similar to plant rhizomes, thereby creating a certain thickness of rain-resistant soil. , wind erosion, strong air permeability, porous and stable soil structure similar to or better than natural topsoil; it is mostly used for the cultivation of plant ecology on steep slopes on both sides of roads, railways and rivers, and slopes with poor soil and water conservation ecology. The invention patent whose Chinese patent number is 201620186474.4 and authorized announcement number is CN205421288U discloses a multilayer composite ecological protection blanket. The structure constituting the protective cover includes more than three layers of biaxially stretched net, the top biaxially stretched net and the bottom biaxially stretched net are regular plane biaxially stretched nets, and the top biaxially stretched net and the bottom biaxially stretched net are arranged The pleated biaxially stretched net, the pleated biaxially stretched net has an irregular uneven pleated structure, and the top biaxially stretched net, the bottom biaxially stretched net, and the pleated biaxially stretched net are stitched together. The multi-layer composite ecological protection blanket can effectively prevent the loss of water and soil particles in the middle layer by being inserted into the middle layer composed of folded biaxially stretched nets during use, and can reduce the speed of surface rainwater runoff through the strengthened plant root system , Improve the anti-corrosion ability of the system. During the use of the ecological vegetation mesh mat with this structure, it is first buried in the soil, and then the grass seeds are sprayed in the soil layer covering the biaxially stretched mesh on the top. However, the construction process of the ecological vegetation mat of this structure is not only complicated, but also difficult to preserve the grass seeds sprayed on its surface in areas with high rainfall and side slopes, thus affecting its use effect.

Contents of the invention

The purpose of the present invention is to provide an anti-scouring and anti-erosion ecological vegetation net mat which is simple and convenient in construction, beneficial to the preservation of grass seeds and soil-fixing and planting effects.

To achieve the above object, the technical solution adopted in the present invention is:

An anti-scouring and anti-erosion ecological vegetation mesh pad, its structure includes a folded net, characterized in that: the upper part of the folded net is covered with grass seed sticky paper and the top net layer, and the bottom of the folded net is sequentially provided with It connects the fixed geotextile layer and the ground mesh layer.

The additional technical features constituting the above-mentioned anti-scouring and anti-erosion ecological vegetation mesh pad also include:

- The folded net is composed of one or more layers of wavy bidirectional micro-grid nets or clustered geonet mats;

- the sticker used in the grass seed sticker is a water-soluble plant paper layer;

——The bottom of the grass seed sticker is provided with a humus layer fixed with the folding net;

——The folded net is composed of vegetable blanket and coconut silk blanket;

——The top mesh layer and ground mesh layer are formed by stretching polypropylene.

The preparation method of the above-mentioned anti-scouring and anti-erosion ecological vegetation mesh pad comprises the following steps:

The first step is to sew a geotextile layer at the bottom of the folded net composed of one or more layers of wavy two-way micro-grid nets or lump-shaped geonet mats, and then fix the bottom mesh layer at the bottom of the geotextile layer ;

In the second step, the grass seed sticky paper fixed and evenly sprayed with grass seeds is laid on the upper part of the folded net;

In the third step, the top mesh layer is covered on the upper part of the grass seed sticky paper, and fixed to form a vegetation mesh pad;

In the fourth step, the above-mentioned vegetation net pad is rolled up to form a net roll.

In the preparation method for constituting the above-mentioned anti-scouring and anti-erosion ecological vegetation mesh pad, it may also include: rolling the moist humus layer covered with a double-layer net to form a sheet, and fixing it on the upper part of the folded net , forming the underlying structure of the grass seed sticker.

Compared with the prior art, the anti-scouring and anti-erosion ecological vegetation net mat provided by the present invention has the following advantages:

One, because the grass seed sticky paper is laid on the upper top layer of the vegetation mat, the grass seeds can be evenly laid on the grass seed sticky paper, so that the grass seeds can be spread evenly, which is conducive to the formation of lawns;

Second, since the bottom of the folded net that constitutes the vegetation mat is provided with a geotextile layer that is connected and fixed, the geotextile can not only realize the infiltration of surface water, but also effectively isolate the soil below it, preventing it from Form runoff flow with the upper part to cause soil loss in the folded net of the upper part of the geotextile;

Third, because the grass seed sticky paper used is a water-soluble plant paper layer, it can be dissolved when it meets water, so that the sticky grass seeds on the upper part can contact the soil at the lower part of the folding net, so as to germinate and grow as soon as possible to form vegetation ; Of course, the contact with the humus layer set at the bottom of the sticky paper will further improve the speed and quality of vegetation lawn formation, which is conducive to the protection of slopes;

Its four, owing to use grass seed sticky paper as the constituent part of ecological vegetation mat, promptly can realize the industrialized production of ecological vegetation mat; Simultaneously during construction, directly lay ecological vegetation mat in the excavated soil ditch, and It only needs to cultivate soil around it; it greatly simplifies the construction process of the ecological vegetation mesh pad and improves the construction efficiency.

Description of drawings

Fig. 1 is a schematic structural view of the anti-scouring and anti-erosion ecological vegetation mesh pad of the present invention.

Detailed ways

The structure and working principle of an anti-scouring and anti-erosion ecological vegetation net mat provided by the present invention will be further described in detail below in conjunction with the accompanying drawings.

As shown in FIG. 1 , it is a schematic structural view of an anti-scouring and anti-erosion ecological vegetation mat provided by the present invention. The structure constituting the ecological vegetation mat includes a three-dimensional core-shaped folded net 1 composed of one or more layers of wavy bidirectional micro-geogrids. The flake moist humus soil layer 23 formed by rolling, and the grass seed sticky paper 3 evenly sprayed with grass seeds is fixed on the top of the net 21, and the grass seed fixed top mesh layer 4 is arranged on the grass seed sticky paper 3 top ; The bottom of the folding net 1 is sequentially provided with a geotextile layer 5 connected and fixed thereto and a ground net net layer 6 for improving the tensile strength of the vegetation mat.

In the structure constituting the above-mentioned anti-scouring and anti-erosion ecological vegetation mesh pad:

——The above-mentioned folding net is composed of one or more layers of wavy two-way fine grid nets or agglomerated geonet mats, but it is preferably made of plant blankets, coconut silk blankets 11, or made of extremely perishable plant blankets 1. The coconut silk blanket 11 is mixed with a three-dimensional net 12 formed by polymer chemical materials such as polypropylene; wherein, the three-dimensional net 12 formed by polymer chemical materials such as polypropylene mainly plays the role of a skeleton network, and the extremely perishable vegetation blanket Coconut silk blanket 11 then plays the effect of making guest soil form agglomerate structure; Of course the vegetation blanket of above-mentioned two kinds of materials, coconut silk blanket 11 and three-dimensional net 12 all can form folded net separately; Simultaneously the thickness of this folded net determines The thickness of an anti-scouring and anti-erosion ecological vegetation mat, which has a decisive effect on the formation of the preparation

——The sticky paper used in the above-mentioned grass seed sticky paper 3 is a water-soluble plant paper layer, that is, it can be melted to form a base fertilizer with grass seeds when exposed to water, so as to facilitate its germination and growth to form vegetation faster;

——The above-mentioned top net layer 4 and the ground net net layer 6 can all be stretched and formed by polypropylene, and the effect of both of them is used to play the role of integral tensile skeleton; In addition, the top net layer 4 can also be a plant net (such as Vegetable fiber-formed soft and able to cover grass seeds and prevent them from falling off).

The preparation of the above-mentioned anti-scouring and anti-erosion ecological vegetation mesh pad comprises the following steps:

First roll the moist humus layer 23 covered with double-layer nets 21, 22 to form a sheet 2; The bottom of the folded net 1 sews a geotextile layer 5, and then fixes the bottom mesh layer 6 at the bottom of the geotextile layer; in the third step, the grass seeds are spread evenly on the sticky paper to form the grass seed sticky paper 3, and the Grass seed sticky paper and the top mesh layer 4 covered on the grass seed sticky paper are fixed on the top of the folded net 1; finally the above-mentioned vegetation net pad is rolled up to form a net roll.

During construction, the slope site should be leveled first, and then the vegetation mesh pad should be rolled out, and the four sides should be cultivated and sprayed with water for maintenance.

The above-mentioned two-way micro-geogrid has a certain thickness and can be covered with a layer of humus to facilitate the growth of vegetation; at the same time, its root system is wrapped in a three-dimensional core structure, and the three-dimensional core structure layer acts as a "clamp" for the root system. , that is to use the three-dimensional mechanism of geotechnical materials and the intricate root system of plants to form a "capture mechanism and erosion control system" to limit the movement of soil particles, thereby naturally creating a system with high shear resistance to achieve dense vegetation , The root system is firm, and finally realizes the purpose of anti-scouring and anti-erosion of ecological vegetation.

Claims (8)

1. a kind of antiscour anti-erosion ecological vegetation gauze pad, structure includes folded net, it is characterised in that：In the folded net Top is covered with grass-seed sticky paper and top stratum reticulare, is disposed in the bottom of the folded net and is attached thereto fixed geotextile layer With earth mat stratum reticulare.

2. a kind of antiscour anti-erosion ecological vegetation gauze pad as described in claim 1, it is characterised in that：The folded net by The geotechnological gauze pad of one or more layers wavy two-way precise and tiny grid or bulk is constituted.

3. a kind of antiscour anti-erosion ecological vegetation gauze pad as described in claim 1, it is characterised in that：The grass-seed sticky paper institute The sticky paper used is water-soluble plant paper layer.

4. a kind of antiscour anti-erosion ecological vegetation gauze pad as described in claim 1, it is characterised in that：The grass-seed sticky paper Bottom is provided with and the fixed humic soil layer of the folded net.

5. a kind of antiscour anti-erosion ecological vegetation gauze pad as described in claim 1, it is characterised in that：The folded net is Plant-growth carpet, shredded coconut meat blanket are constituted.

6. a kind of antiscour anti-erosion ecological vegetation gauze pad as described in claim 1, it is characterised in that：The top stratum reticulare It is stretched and is formed by polypropylene with earth mat stratum reticulare.

7. a kind of preparation method of above-mentioned antiscour anti-erosion ecological vegetation gauze pad, includes the following steps：

The first step, in the folded net being made of the geotechnological gauze pad of one or more layers wavy two-way precise and tiny grid or bulk Bottom sews geotextile layer, then fixes spacer screen layer in the bottom of the geotextile layer；

Second step is laid with the fixed grass-seed sticky paper for being uniformly sprayed with grass-seed on the top of the folded net；

Third walks, and top stratum reticulare is covered on to the grass-seed sticky paper top, and fixed, forms vegetation gauze pad；

4th step rolls above-mentioned vegetation gauze pad to form net volume.

8. a kind of antiscour anti-erosion ecological vegetation gauze pad preparation method as claimed in claim 7, it is characterised in that：It will use double The humic soil layer for the moistening that layer guard rises rolls to form sheet, and is fixed on the top of the folded net, and it is viscous to form the grass-seed The fabric of paper.