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A kind of vegetation restoration method in coal mine area

A technology for vegetation restoration and coal mines, which is applied in the fields of botanical equipment and methods, planting substrates, and leguminous plant cultivation. Structural improvement, improving soil fertility, and benefiting plant growth

Active Publication Date: 2021-01-26
CHINA INST OF WATER RESOURCES & HYDROPOWER RES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] my country's energy structure is dominated by coal, which accounts for about 70% of the primary energy consumption. While coal has made great contributions to my country's economic development, it has also seriously affected the soil environment in mining areas. The topsoil and rock layer above the coal seam are peeled off. After the mining of coal resources, a certain goaf will be formed underground, which will lead to land subsidence. The general repair method is to cover with foreign soil, but the nutrient content of the soil layer formed after covering with foreign soil Low, poor moisture retention performance, making it difficult for plants to quickly establish

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] A method for restoring vegetation in a coal mining area, comprising the following steps:

[0039] (1) Break the coal gangue into fragments with a diameter of 2-5cm, and flatten the subsidence area of ​​the coal mine and the surrounding land;

[0040] (2) laying a layer of thickness on the land after leveling is the first matrix material of 0.6-0.8m; wherein the first matrix material comprises the following components by weight: 40 parts of loam, 20 parts of coal gangue, 10 parts of urban sludge 1 part, 10 parts of biomass charcoal, 4 parts of urea-formaldehyde foam powder, 2 parts of thiourea, 2 parts of calcium hydroxyphosphate and 1 part of modified chitosan; the preparation method of the first matrix material is: mix each component evenly Can;

[0041] (3) The second matrix material of 0.4-0.6m behind the layer thickness of bedding on the cover soil layer; Wherein, the second matrix material comprises the component of following parts by weight: 20 parts of loam, 2 p...

Embodiment 2

[0059] A method for restoring vegetation in a coal mining area, comprising the following steps:

[0060] (1) Break the coal gangue into fragments with a diameter of 2-5cm, and flatten the subsidence area of ​​the coal mine and the surrounding land;

[0061] (2) laying a layer of thickness on the land after leveling is the first matrix material of 0.6-0.8m; wherein the first matrix material comprises the following components by weight: 55 parts of loam, 35 parts of coal gangue, 20 parts of urban sludge parts, 20 parts of biomass charcoal, 8 parts of urea-formaldehyde foam powder, 5 parts of thiourea, 5 parts of calcium hydroxyphosphate and 4 parts of modified chitosan; the preparation method of the first matrix material is: mix each component evenly Can;

[0062] (3) The second matrix material of 0.4-0.6m behind the layer thickness of bedding on the covering soil layer; Wherein, the second matrix material comprises the following components by weight: 30 parts of loam, 5 parts ...

Embodiment 3

[0080] A method for restoring vegetation in a coal mining area, comprising the following steps:

[0081] (1) Break the coal gangue into fragments with a diameter of 2-5cm, and flatten the subsidence area of ​​the coal mine and the surrounding land;

[0082] (2) Laying a layer of thickness on the land after leveling is the first matrix material of 0.6-0.8m; wherein the first matrix material comprises the following components by weight: 45 parts of loam, 25 parts of coal gangue, 13 parts of urban sludge 13 parts of biomass charcoal, 5 parts of urea-formaldehyde foam powder, 3 parts of thiourea, 3 parts of calcium hydroxyphosphate and 2 parts of modified chitosan; the preparation method of the first matrix material is: mix each component evenly Can;

[0083] (3) The second matrix material of 0.4-0.6m behind the layer thickness of bedding on the covering soil layer; Wherein, the second matrix material comprises the following components by weight: 23 parts of loam, 3 parts of urea...

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Abstract

The invention discloses a method for vegetation restoration in a coal mine area. The method comprises the following steps: (1) crushing coal gangue into fragments with a diameter of 2-5 cm, and leveling a coal mine subsidence area and surrounding land; (2) laying a layer of a first matrix material with a thickness of 0.6-0.8 m on the leveled land; (3) laying a layer of a second matrix material with a thickness of 0.4-0.6 m on the a soil covering layer; and (4) planting Chinese pines and amorpha fruticosa on the second matrix material in a row interplanting manner, then planting alfalfa at empty spaces of the Chinese pines and the amorpha fruticosa, and subsequently carrying out management according to a conventional management method. The first matrix material and the second matrix material provided by the invention can provide soil fertility, improve the soil structure, provide abundant nutrient substances for growth of the Chinese pines, the amorpha fruticosa and the alfalfa, and also can exert an effect of retaining water and fixing heavy metals. The growth of the three plants is facilitated, and the effect of vegetation restoration is further achieved.

Description

technical field [0001] The technical field of the vegetation restoration method of the present invention, in particular relates to a vegetation restoration method in a coal mining area. Background technique [0002] my country's energy structure is dominated by coal, which accounts for about 70% of the primary energy consumption. While coal has made great contributions to my country's economic development, it has also seriously affected the soil environment in mining areas. The topsoil and rock layer above the coal seam are peeled off. After the mining of coal resources, a certain goaf will be formed underground, which will lead to land subsidence. The general repair method is to cover with foreign soil, but the nutrient content of the soil layer formed after covering with foreign soil Low, poor moisture retention performance, making it difficult for plants to quickly establish. Therefore, how to solve the problem of vegetation restoration in coal mining areas, especially in ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01G17/00A01G22/40A01G24/10A01G24/20A01G24/22A01G24/27A01G24/30A01G24/35C05G3/70C05G3/80C05G3/00C05G3/40
CPCA01G17/005A01G22/40A01G24/10A01G24/20A01G24/22A01G24/27A01G24/30A01G24/35C05B7/00C05D9/00C05G3/00C05G3/80C05C11/00C05F7/00C05F3/00C05F5/002C05F11/00C05F11/08
Inventor 刘广全土小宁刘长海刘磊刘广亮
Owner CHINA INST OF WATER RESOURCES & HYDROPOWER RES
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