CN111886959A - An ecological regreening method for the steep slope of a mine - Google Patents

Abstract

The invention discloses an ecological greening method for a steep slope of a mine, which comprises the following steps: trimming the loosened and protruded soil body to realize the effect of clearing the slope; chiseling a planting hole on the slope, wherein the planting hole is in a convex shape; hanging a net on the slope surface between the planting holes, and fixing the net by using an anchor rod after hanging the net; arranging a cylinder with holes in the axial direction of the planting hole, filling garden soil into the planting hole, and filling nutrient media into the cylinder with holes; cement pouring is carried out on the planting holes filled with the garden soil, and sowing holes are reserved on the cement pouring layer; and sowing Hexi chrysanthemum in the planting hole through the sowing hole, watering the Hexi chrysanthemum for enough water, and covering the soil. After the ecological greening method is used for construction, the side slope is stable, landslide and collapse phenomena do not occur within two years after construction, the passenger soil in the pit hole is kept complete, rain wash and loss phenomena do not occur, the plant coverage rate of the side slope is high, plants grow vigorous, and the landscape effect is excellent.

Description

An ecological regreening method for the steep slope of a mine

technical field

The invention belongs to the technical field of slope re-greening, and in particular relates to an ecological re-greening method for a steep slope of a mine.

Background technique

Slope re-greening refers to the ecological slope protection method that uses plant seeds, seedlings, etc. to be planted on the slope of mines, river embankments and other structures to protect the slope stability and beautify the environment. The combination of pole support, hanging net, lattice, etc.) can effectively realize the restoration and protection of ecological vegetation on the slope. Infrastructure construction and mine resource development have formed a large number of exposed slopes. These exposed slopes not only affect the ecological environment and landscape, but also have hidden dangers of geological disasters, which affect the safety and stability of the main greening projects. Therefore, slope greening is urgently needed.

Fish scale pit re-greening technology is a common method of re-greening. It uses a pit similar to a half-moon to plant seedlings, which has the effect of preventing soil erosion, flexible construction, small soil movement, labor saving and low cost. This method can be applied in areas with relatively small rainfall, especially in areas where the surface Quaternary cover layer is thin, fish scale pits are beneficial to collect natural precipitation. However, this method is more suitable for regreening of slopes with gentle slopes, and the pit surface and pit bottom lack adaptive changes. The root system of seedlings in the early stage of growth is not developed, and the demand for soil space is small. The demand for soil space increases, and the amount of foreign soil filled in the pits in the mining area is small, which is not conducive to the growth and development of seedlings. In order to provide sufficient foreign soil environment, it is usually necessary to dig larger pits, which requires a large amount of soil to be broken and the cost is high.

The inventor found in the slope re-greening construction that the use of convex-shaped pits for slope re-greening can not only reduce the amount of construction soil, but also adapt to the growth and development of seedlings, especially in the later stage of growth. structure, increase water and fertilizer absorption capacity. In addition, in the present invention, a perforated cylinder filled with a nutrient matrix is arranged in the planting pit, which not only allows the nutrients in it to be slowly supplied to the seedlings to avoid waste caused by excess nutrients in the early stage, but also can carry out irrigation and top-dressing through the cylinder, which greatly reduces the top-dressing of water and fertilizer. In the process of loss, water and fertilizer resources are saved, and at the same time, cement is poured at the mouth of the pit to avoid rainwater scouring the filled foreign soil.

SUMMARY OF THE INVENTION

In view of this, the present invention provides an ecological regreening method for the steep slope of a mine.

A method for ecological regreening of a steep slope of a mine provided by the present invention comprises the following steps:

Slope cleaning: trim loose and protruding soil;

Making a planting hole: digging a planting hole on the slope, and the planting hole is convex;

Slope hanging net: hang net on the slope between the planting holes, and fix it with anchor rods after hanging the net;

Filling the planting hole: a perforated cylinder is arranged in the axial direction of the planting hole, and the garden soil is filled into the planting hole, and the perforated cylinder is filled with a nutrient matrix;

Pouring planting holes: Cement the planting holes filled with pastoral soil, and reserve seeding holes on the cement pouring layer;

Planting vegetation: Sow Hexi chrysanthemum in the planting hole through the seeding hole, pour enough water and cover with soil.

Preferably, the depth of the planting hole is 60-100 cm, and the diameter is 100-120 cm.

Preferably, the slope distance between the planting holes is 100-120 cm.

Preferably, the perforated cylinder extends 10-20 cm outside the planting hole.

Preferably, the thickness of the cement pouring layer is 3-5 cm, and the diameter of the seeding hole is 20-30 cm.

Preferably, the nutrient matrix includes biochar and additional components dispersed in the biochar, in parts by weight, the additional components include: 20-40 parts of humus, 30-60 parts of mushroom residue, and 50-60 parts of peat soil. 80 parts, 20-30 parts of acrylamide-acrylate copolymer cross-linked colloid.

Compared with the prior art, the beneficial effects of the present invention are:

The invention adopts the convex-shaped planting hole to regreen the slope, the hole can adapt to the soil space requirements of the seedling root system in different growth periods, and in the early stage of the seedling growth, it is mainly to go deep into the soil layer, so the narrow and tight hole is conducive to promoting the root system. It grows deeply into the soil layer. In the later stage of seedling growth, it mainly increases the number of roots and forms a network structure with stability. Therefore, the wide pit bottom can promote the root system to grow around to form a network structure, which not only enhances the ability of seedlings to absorb water and fertilizer, Moreover, the stability of the seedlings is increased, and the soil-fixing ability of the seedlings is improved; at the same time, the invention provides a perforated cylinder filled with a nutrient matrix in the pit, which can not only release the nutrients therein slowly and be absorbed by the seedlings, avoid nutrient loss and waste, Moreover, the cylinder is also used as an irrigation device, so that water can penetrate deep into the soil to supply the root system, and can also be used as an anchor to increase the stability of cement pouring.

In the present invention, cement pouring is performed after the planting hole is filled with guest soil, which effectively prevents the guest soil from being washed by rainwater, and at the same time, the cement pouring layer and the slope net form mutual support to prevent the anchor rods fixing the slope net from falling off.

Description of drawings

FIG. 1 is a schematic structural diagram provided by the ecological restoration greening of the present invention.

In the figure, 1-slope, 2-planting hole, 3-seedling, 4-perforated cylinder, 5-casting layer.

Detailed ways

The technical solutions and effects of the present invention will be further elaborated below in conjunction with specific embodiments, so as to facilitate the understanding of those skilled in the art. It should be noted that the following embodiments are only suitable for explaining and illustrating the present invention, and are not suitable for limiting the right scope of the present invention.

Example 1

Please refer to FIG. 1, which provides a schematic structural diagram of the ecological restoration of the present invention.

The invention provides an ecological restoration greening method for a steep slope of a mine, comprising the following steps:

Cleaning the slope surface: mechanically clean the loose and protruding soil on the slope surface, so that the slope surface has no obvious depressions and protrusions, and the joints are smooth and flat without obvious edges and corners;

Making planting holes: dig planting holes on the slope, the slope distance between the planting holes is 100cm, the planting holes are convex, the diameter of the pit surface of the planting holes is 100cm, and the diameter of the enlarged surface of the hole is 150cm , the depth from the pit surface to the enlarged surface is 20cm, and the total depth of the planting hole is 60cm,;

Slope hanging net: hang net on the slope between the planting holes, and fix it with anchor rods after hanging the net;

Filling the planting hole: set a holed cylinder in the axial direction of the planting hole, the holed cylinder extends to 10cm outside the planting hole, and then fill the planting hole with pastoral soil, wherein the holed cylinder is filled with a nutrient matrix, nutrient The matrix is made by mixing 20 parts of humus, 30 parts of mushroom residue, 50 parts of peat soil, and 20 parts of acrylamide-acrylate copolymer cross-linked colloid;

Pouring planting holes: Cement the planting holes filled with garden soil, and reserve seeding holes on the cement pouring layer, wherein the thickness of the cement pouring layer is 3-5cm, and the diameter of the seeding holes is 20-30cm;

Planting vegetation: Sow Hexi chrysanthemum in the planting hole through the seeding hole, pour enough water and cover with soil.

Example 2

The invention provides an ecological restoration greening method for a steep slope of a mine, comprising the following steps:

Cleaning the slope surface: mechanically clean the loose and protruding soil on the slope surface, so that the slope surface has no obvious depressions and protrusions, and the joints are smooth and flat without obvious edges and corners;

Making planting holes: dig planting holes on the slope surface, the slope distance between the planting holes is 110cm, the planting holes are convex, the diameter of the hole surface of the planting holes is 110cm, and the diameter of the enlarged surface of the hole is 160cm , the depth from the pit surface to the enlarged surface is 20cm, and the total depth of the planting hole is 80cm;

Slope hanging net: hang net on the slope between the planting holes, and fix it with anchor rods after hanging the net;

Filling the planting hole: set a holed cylinder in the axial direction of the planting hole, the holed cylinder extends to 15cm outside the planting hole, and then fill the garden soil into the planting hole, wherein the holed cylinder is filled with a nutrient matrix, and the nutrients The matrix is made by mixing 20 parts of humus, 30 parts of mushroom residue, 50 parts of peat soil, and 20 parts of acrylamide-acrylate copolymer cross-linked colloid;

Pouring planting holes: Cement the planting holes filled with garden soil, and reserve seeding holes on the cement pouring layer, wherein the thickness of the cement pouring layer is 3-5cm, and the diameter of the seeding holes is 20-30cm;

Planting vegetation: Sow Hexi chrysanthemum in the planting hole through the seeding hole, pour enough water and cover with soil.

Example 3

The invention provides an ecological restoration greening method for a steep slope of a mine, comprising the following steps:

Cleaning the slope surface: mechanically clean the loose and protruding soil on the slope surface, so that the slope surface has no obvious depressions and protrusions, and the joints are smooth and flat without obvious edges and corners;

Making planting holes: dig planting holes on the slope surface, the slope distance between the planting holes is 120cm, the planting holes are convex, the diameter of the hole surface of the planting holes is 120cm, and the diameter of the enlarged surface of the hole is 170cm , the depth from the pit surface to the enlarged surface is 20cm, and the total depth of the planting hole is 100cm;

Slope hanging net: hang net on the slope between the planting holes, and fix it with anchor rods after hanging the net;

Filling the planting hole: set a holed cylinder in the axial direction of the planting hole, the holed cylinder extends to 10cm outside the planting hole, and then fill the planting hole with pastoral soil, wherein the holed cylinder is filled with a nutrient matrix, nutrient The matrix is made by mixing 20 parts of humus, 30 parts of mushroom residue, 50 parts of peat soil, and 20 parts of acrylamide-acrylate copolymer cross-linked colloid;

Pouring planting holes: Cement the planting holes filled with garden soil, and reserve seeding holes on the cement pouring layer, wherein the thickness of the cement pouring layer is 3-5cm, and the diameter of the seeding holes is 20-30cm;

Planting vegetation: Sow Hexi chrysanthemum in the planting hole through the seeding hole, pour enough water and cover with soil.

Taking Example 1 as the investigation object: at 30 days of construction, the abundance of Hexi chrysanthemum was 12.5%; at 90 days of construction, the abundance of Hexi chrysanthemum increased significantly to 31.9%. After the method of the invention is used to repair the slope, the slope is stable, and within two years after the construction is completed, no landslide and collapse phenomenon occur, the foreign soil in the pit remains intact, no rainwater erosion and loss phenomenon occur, the slope plant coverage rate is high, the plants are vigorous, and the landscape effect is good. Excellent.

Examples 2 and 3 have statistical significance with Example 1, and both achieve a better ecological regreening effect.

The above are only the preferred embodiments of the present invention. It should be pointed out that for those skilled in the art, without departing from the principles of the present invention, several improvements and modifications can be made. It should be regarded as the protection scope of the present invention.

Claims (6)

1. An ecological greening method for a steep slope of a mine is characterized by comprising the following steps:

clearing the slope surface: trimming loose and protruding soil bodies;

making planting holes: chiseling a planting hole on the slope, wherein the planting hole is in a convex shape;

hanging a net on a slope surface: hanging a net on the slope surface between the planting holes, and fixing the net by using an anchor rod after hanging the net;

filling planting holes: arranging a cylinder with holes in the axial direction of the planting hole, filling garden soil into the planting hole, and filling nutrient media into the cylinder with holes;

pouring a planting hole: cement pouring is carried out on the planting holes filled with the garden soil, and sowing holes are reserved on the cement pouring layer;

planting vegetation: and sowing Hexi chrysanthemum in the planting hole through the sowing hole, watering the Hexi chrysanthemum for enough water, and covering the soil.

2. The ecological greening method as claimed in claim 1, wherein the depth of the planting hole is 60-100cm, and the diameter is 100-120 cm.

3. The ecological greening method as claimed in claim 1, wherein the slope distance between the planting holes is 100-120 cm.

4. The ecological greening method of claim 1, wherein the perforated cylinder extends 10-20cm outside the planting hole.

5. The ecological greening method of claim 1, wherein the thickness of the cement pouring layer is 3-5cm, and the diameter of the seeding holes is 20-30 cm.

6. The ecological greening method of claim 1, wherein the nutrient medium comprises biochar and additive components dispersed in the biochar, and the additive components comprise, in parts by weight: 20-40 parts of humus, 30-60 parts of mushroom residues, 50-80 parts of peat soil and 20-30 parts of acrylamide-acrylate copolymerization cross-linked substance colloid.

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