A method for restoring vegetation without covering soil in a strongly acidic tailings abandoned land

A technology for vegetation restoration and abandoned land, applied in the direction of site preparation methods, botanical equipment and methods, restoration of contaminated soil, etc., can solve the problems of secondary ecological damage, high cost, high cost, etc., to reduce treatment costs and post-management The effect of less investment and simple method

Active Publication Date: 2017-08-01
CHINA NERIN ENG CO LTD
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Problems solved by technology

[0017] The technical problem to be solved by the present invention is that the method of covering the surface with clay with a thickness ranging from 30 to 60 cm for vegetation in the current domestic treatment of strong acid-polluted tailings wastelands is expensive, expensive, and easy to use. To solve the problem of secondary ecological damage, provide a method for direct vegetation restoration of strongly acidic tailings waste land without covering soil

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  • A method for restoring vegetation without covering soil in a strongly acidic tailings abandoned land
  • A method for restoring vegetation without covering soil in a strongly acidic tailings abandoned land

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Embodiment Construction

[0047] In order to explore the feasibility of unplanted soil vegetation restoration technology for strongly acidic tailings, entrusted by a copper mine in Jiangxi, we conducted a research on the ecological restoration of unplanted soil vegetation for a tailings pond, and explored the reasonable soil suitable for tailings wasteland in southern China Improvement mode and plant matching planting mode.

[0048] The surface of the tailings wasteland is flat, the surface is powdery white sand, and the lower layer is dense and cohesive, and the compaction phenomenon is very serious; there is no plant growth in the entire tailings wasteland area, the surface temperature is high, water is short, and the soil water retention is poor; the soil layer is soft and human Deep traces can be left when trampled on, which is easy to raise dust and cause serious water and soil erosion.

[0049]In view of the situation of abandoned mine tailings, we conducted on-site investigation, sampling and an...

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Abstract

The invention discloses a method for restoring uncovered soil vegetation in a strongly acidic tailings wasteland, which is characterized in that it comprises the following processes and steps: A. pre-preparation and drainage; B. improving the pH value of the land; C. cultivating the tailings wasteland Soil fertility; D. Screening and cultivating plant varieties; F. Management of seedlings after transplantation; the advantage is that the method of vegetation restoration without covering the soil reduces the disturbance to the tailings land, can achieve drainage, and can reduce acidity The effect of water on vegetation, the purpose of stabilizing heavy metals and improving the living environment of plants. Moreover, the cost is low, the effect is quick, the effect is good, and the operability is strong.

Description

technical field [0001] The invention relates to a method for restoring vegetation to tailings abandoned land, especially to heavy metal mines, such as: copper mines, lead-zinc mines, gold mines, pyrite mines and other mine tailing waste lands that have strong Due to the extreme characteristics of acidity, heavy metal pollution, and extremely low nutrients, vegetation cannot recover naturally. Specifically, it is a method for restoring vegetation in the waste land of strongly acidic tailings without soil covering. Background technique [0002] Because the tailings produced by mine dressing are a special "soil" formed by a series of processed ore slag accumulation, its physical and chemical properties are quite different from the normal "soil" that plants rely on for survival, which is extremely unfavorable for vegetation restoration. The tailing ponds of heavy metal mines generally have the characteristics of strong acid pollution, heavy metal pollution, extremely low nutrie...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B09C1/00B09C1/08B09C1/10A01G1/00A01B79/00
Inventor 曾宪坤袁永强曹学新胡虎刘晓峰
Owner CHINA NERIN ENG CO LTD
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