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Method for recovering anti-erosion vegetation of gangue dump slope

A vegetation restoration and anti-erosion technology, applied in the fields of mine ecological restoration and environmental management, can solve the problems of weak anti-erosion ability and limited anti-erosion ability, and achieve the effect of preventing soil erosion, realizing mine ecological restoration, and resisting wind and rain erosion.

Active Publication Date: 2018-09-11
山西智德生态环保股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The main component of the matrix layer is still soil, and the plant fiber is obtained by fermenting and decomposing straw, and its anti-erosion ability is weak, so the anti-erosion ability of this matrix layer is limited.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Example of Restoration of Anti-erosion Vegetation in Wangzhuang Coal Mine of Changzhi Branch of Shanxi Jinneng Group

[0038] Wangzhuang Coal Mine Gangue Dump Treatment Project has six bridleways with a width of 5m, a vertical height of 5m, a slope length of 11m, and a slope ratio of 1:2. On the vegetative layer, vegetation is carried out using a guest soil sprayer.

[0039] 1. The matrix mixture consists of the following components in parts by weight:

[0040] Calcium-based bentonite 800 parts

[0041] Zeolite 300 parts

[0042] Fulvic acid 25 parts

[0043] 2200 parts of wood fiber

[0044] 50 parts methyl cellulose

[0045] 1 part polypropylene fiber

[0046] Mix the above materials and stir evenly to make the anti-erosion matrix mixture.

[0047] 2. Plant seed selection

[0048] Choose tall fescue, ryegrass, bluegrass and other herbaceous seeds, the mixing ratio is 5:3:2, and the spraying amount is 25g / m 2 . The shrub is Amorpha fruticosa, and the spraying...

Embodiment 2

[0055] Example of restoration of anti-erosion vegetation on the east slope of Wangzhuang Coal Mine of Changzhi Branch of Shanxi Jinneng Group

[0056] On the eastern side of Wangzhuang gangue, due to road construction at the gangue field, an irregular slope of exposed rock is formed, with a slope ranging from 30-70 degrees and a height of 5-10m. A nutrient layer has been constructed, with an area of ​​about 2000m 2 .

[0057]1. The matrix mixture consists of the following components in parts by weight:

[0058] Calcium-based bentonite 1200 parts

[0059] Zeolite 500 parts

[0060] Fulvic acid 30 parts

[0061] 2500 parts of wood fiber

[0062] Ethyl hydroxyethyl cellulose 60 parts

[0063] 1.5 parts of polyvinyl chloride fiber

[0064] Mix the above materials and stir evenly to make the anti-erosion matrix mixture.

[0065] 2. Plant seed selection

[0066] Choose tall fescue, ryegrass, bluegrass and other herbaceous seeds, the mixing ratio is 5:3:2, and the spraying am...

Embodiment 3

[0073] Example of Restoration of Anti-erosion Vegetation on the West Slope of Wangzhuang Coal Mine of Changzhi Branch of Shanxi Jinneng Group

[0074] On the west side of the gangue hill in Wangzhuang, due to road construction at the waste rock field, irregular slopes of exposed rocks are formed. The slopes range from 50-80 degrees, and some parts reach 90 degrees. Even the slopes are 5-10m high. The nutrient layer has been constructed. The area about 1500m 2 .

[0075] 1. The matrix mixture consists of the following components in parts by weight:

[0076] Calcium-based bentonite 1500 parts

[0077] Zeolite 400 parts

[0078] Fulvic acid 30 parts

[0079] 2600 parts of wood fiber

[0080] 70 parts of hydroxyethyl cellulose

[0081] 2 parts polyethylene fiber

[0082] Mix the above materials and stir evenly to make the anti-erosion matrix mixture.

[0083] 2. Plant seed selection

[0084] Choose tall fescue, ryegrass, bluegrass and other herbaceous seeds, the mixing ra...

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Abstract

The invention provides a method for recovering anti-erosion vegetation of a gangue dump slope. An anti-erosion substrate comprises bentonite, zeolite, fulvic acid, wood fibers, polymers and syntheticfibers; water is added into a mixture of the anti-erosion substrate to prepare slurry; plant seeds and fertilizer are added into the slurry; the slurry is sprayed on a soil covering layer or a nutrient layer of gangue dump through a spraying machine, so that the slope is prevented from being eroded by rain, and the seeds quickly germinate, root and grow to protect the slope of the gangue dump. Wherein, the mixture of the anti-erosion substrate comprises, by weight, 600-1200 parts of bentonite, 200-600 parts of zeolite, 20-40 parts of fulvic acid, 1400-2600 parts of wood fibers, 20-100 parts ofpolymers and 0.5-2 parts of synthetic fibers. An anti-erosion vegetation layer prepared by the method retains water, protects the fertilizer, is loose and permeable and can effectively resist wind and rain erosion, prevent soil erosion of the slope of the gangue dump slope and rapidly form plant communities to achieve ecological restoration of mines.

Description

technical field [0001] The invention belongs to the fields of environmental management and mine ecological restoration, and in particular relates to a method for restoring anti-erosion vegetation on gangue hill slopes. Background technique [0002] Coal gangue is the largest industrial solid waste discharged by coal mines, accounting for about 10-20% of raw coal production. At present, there are thousands of gangue dumps in the country that have not been treated, and about hundreds of millions of tons of new gangue are added every year. Gangue hills not only occupy a large amount of land and destroy the surrounding ecological landscape, but also release a large amount of toxic and harmful gases and dust into the atmosphere, as well as produce a large amount of leaching solution. Therefore, the environmental and ecological governance of gangue hills is a heavy responsibility and an arduous task. [0003] Conventional methods for gangue dump management: slope reduction → soi...

Claims

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Application Information

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IPC IPC(8): A01G22/00A01G17/00A01B79/02A01G24/15A01G24/13A01G24/30A01G24/22A01G24/28
CPCA01B79/02A01G17/005A01G22/00A01G24/13A01G24/15A01G24/22A01G24/28A01G24/30Y02P60/20
Inventor 岳新积张银玲
Owner 山西智德生态环保股份有限公司
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