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Revegetation method for tailings dams in northern region

A technology of vegetation restoration and tailings dams, applied in the direction of site preparation methods, botanical equipment and methods, applications, etc., can solve the problems of poor stability of vegetation communities, achieve strong drought resistance, maintain water and soil, and improve adaptability

Inactive Publication Date: 2012-09-19
青岛冠中生态股份有限公司
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  • Application Information

AI Technical Summary

Problems solved by technology

Although the invention has established a vegetation layer, it is mainly herbaceous plants, and the stability of the vegetation community is poor.

Method used

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Examples

Experimental program
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Embodiment 1

[0024] Location: Tailings dam of ore dressing plant of Baotou Steel (Group) Company, Baotou City, Inner Mongolia. Follow the steps below:

[0025] A. Clean up and level the slope to eliminate potential geological hazards;

[0026] B. Cover the surface of the tailings dam with 10-15 cm of planting soil;

[0027] C. Spray the slurry-like plant growth soil medium on the surface of the covering soil layer to form a plant growth substrate with a stable and excellent aggregate structure. The material ratio of plant growth soil medium is as follows:

[0028] Clay, 0.35m 3 ; Vegetable fiber, 0.19 m 3 ; Organic matter, 0.75m 3 ; Stabilizer, 0.045m 3 ;

[0029] Slow Release Fertilizer, 0.048m 3 ; Granules, 0.0004m 3 ; Clear water, 1.0m 3 ; Plant seeds, 0.037m 3 ;

[0030] The physical and chemical indicators of the plant growth soil culture medium of this embodiment are as follows:

[0031] Effective water holding capacity 70% (volume) Organic content 60g / ...

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Abstract

A revegetation method for tailings dams in the northern region includes the following steps: (A) slopes are cleaned up and leveled in order to eliminate potential geological hazards; (B) the surface layer of a tailings dam is covered by 10 to 15 centimeters of planting soil; (C) slurry-like plant-growing soil culture medium is sprinkled on the surface of the covering soil, so that a plant-growing substratum with a stable, excellent crumble structure is formed; (D) plant seeds with high stress resistance combined with artificial soil are chosen to be sowed on the surface of the plant-growing substratum, so that a seed layer which is about 2 centimeters in thickness is formed; (E) a management measure with a spray irrigation system and protective nets is adopted to maintain epigaeous seedlings at the late stage. The revegetation method has the advantages that the revegetation method can enhance the adaptability of plants to the complex adverse environment of a tailings pond, including stronger drought-resisting, saline-alkali tolerant, barren-tolerant and nutrient-obtaining capabilities, the method can be utilized to restore the ecology of the slopes of the tailings dam and build a steady vegetation layer, and also has the effects of stabilizing the slopes, conserving water and soil and inhibiting runoff and flying tailings sand.

Description

technical field [0001] The invention relates to a method for comprehensive treatment of large-scale metallurgical tailings dams, in particular to a method for restoring vegetation of metallurgical tailings dams in the northern region by applying aggregate spray technology, and belongs to the technical field of vegetation restoration of industrial tailings slopes. Background technique [0002] my country's mineral resources are rich in content and complete in variety. However, large-scale industrial mining has caused serious ecological and environmental problems, among which the problems caused by abandoned mine tailings are the most serious. Metal mines discharge a large amount of tailings after ore sorting, and then build dams and storehouses to store tailings to form tailings ponds. The tailings storage area lacks vegetation and the stability of the matrix is ​​poor. During rainfall, metal pollutants seep into the groundwater layer with rainwater, resulting in The water bo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01G1/00A01B79/02C05G3/00
Inventor 李春林许剑平孟凡彬史海涛边桂香
Owner 青岛冠中生态股份有限公司
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