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Ecological restoration method for metal mine waste lands

A technology for ecological restoration and abandoned land, applied in the field of ecological restoration of mines, to achieve the effects of saving costs and processes, less damage, and reducing toxicity

Inactive Publication Date: 2018-06-29
SHENZHEN WENKE GARDENING IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to overcome the defects existing in the prior art, aiming at the extremely acidic and high-concentration multiple metal soil ecological restoration problems in the abandoned land formed by metal mine mining, the purpose of the present invention is to provide an ecological restoration method for the abandoned metal mine land, aiming to solve the problem Problems of in-situ soil improvement and rapid ecological restoration using extremely acidic and high-concentration polymetallic soils

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0012] Use an iron rake to loosen the 5-10cm soil on the surface of the site, and drill holes at a distance of 1m, with a hole diameter of 2-4cm and a hole depth of 20-40cm; , 28% mixed material, calculated according to the amount of mixed material per square meter of 1kg, add 6-8 times of water to make a slurry, wait for it to slowly infiltrate and dry for 2 days; rake the surface soil of the site again, and then Mix plant seeds, organic fertilizer, water retaining agent, calcium magnesium phosphate fertilizer, add water and stir evenly, spray on the soil surface with special spraying equipment, and the dosage of plant seeds is 3.2g / m 2 , the plant seeds are a mixture of black fern, ghost needle grass, and paulownia taiwanensis, the mass fraction ratio of the three is 1:2:1, and the amount of organic fertilizer used is 0.6kg / m 2 , the amount of water retaining agent used is 0.4kg per square meter of water, and the amount of calcium magnesium phosphate fertilizer used is 0.1kg...

Embodiment 2

[0014] Use an iron rake to loosen the 5-10cm soil on the surface of the site, and drill holes at a distance of 1m, with a hole diameter of 2-4cm and a hole depth of 20-40cm; , 30% of the mixed material, calculate the usage amount according to the mixed material of 0.6kg per square meter area, add 6-8 times of water to make a slurry and evenly spray it on the surface of the site, wait for it to slowly penetrate and dry for 1 day; again to the site Rake the surface soil, then mix the plant seeds, organic fertilizer, water-retaining agent, calcium magnesium phosphate fertilizer, add water and stir evenly, and spray it on the soil surface with special spraying equipment. The amount of plant seeds is 5g / m2, and the plant seeds are black The mixture of hair fern, ghost needle grass, and Taiwan paulownia, the mass ratio of the three is 1:2:1, the amount of organic fertilizer used is 0.8kg / m2, the amount of water retaining agent used is 0.5kg per square meter of water, and calcium magn...

Embodiment 3

[0016] A 500-square-meter copper mine dump was selected as the test site, and iron rakes were used to loosen the 5-10 cm soil on the surface of the site, and holes were drilled with a claw hammer at a distance of 1 m. The hole diameter was 2-4 cm, and the hole depth was 20-40 cm. etc.; Weigh 50kg of biochar, 300kg of quicklime, and 150kg of bentonite respectively, configure the mixture, add 3 tons of water to make a slurry and evenly spray it on the surface of the site, wait for it to slowly penetrate and dry for 1-2 days, depending on the weather conditions, Subject to drying; rake the surface soil of the site again, and then weigh 2.4kg of plant seeds (0.6kg of black fern, 1.2kg of ghost needle grass, 0.6kg of Taiwan paulownia), 400kg of organic fertilizer, 1.5kg of water retaining agent, Add 100kg of calcium magnesium phosphate fertilizer into the water tank of the seed spraying machine, add water to stir and mix evenly, and spray it evenly on the surface of the site; cover ...

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Abstract

The invention relates to the field of mine ecological restoration, in particular to an ecological restoration method for metal mine waste lands. The method mainly comprises the following steps that (1) surface soil of a site is loosened with a rake, and holes are punched at a one-meter interval; (2) compounds are prepared from charcoal, quick lime and bentonite, water is added into the compounds to prepare slurry, and the slurry is evenly sprayed on the site surface, permeated gradually and dried for 1-2 days; (3) the surface soil of the site is raked again, then plant seeds, organic fertilizers, water retention agents and calcium magnesium phosphate fertilizer are mixed, then water is added, the mixture is evenly stirred, and sprays on the surface soil with special spraying equipment, wherein the plant seeds comprise blechnoid, sticktight and paulownia kawakamii; lastly, after non-woven cloth is covered for conservation and management for 1 month, mulberry seedlings are planted. The ecological restoration method for the metal mine waste lands can realize the improvement of original soil and ecological restoration of the metal mine waste lands, the operation is convenient and effective, and the cost is saved.

Description

technical field [0001] The invention relates to the field of mine ecological restoration, in particular to an ecological restoration method for abandoned metal mines. Background technique [0002] my country is a country with rich mineral resources. The mining of a large number of mines has accompanied the rapid development of my country's economy and has made important contributions to economic development. It caused great damage to the ecological environment around the mine. Mine wasteland mainly includes time-consuming heaps of remaining rock fragments and low-grade ores after concentrate screening, dumps occupied by stripping materials, tailings formed by tailings, and gangue piles of waste rocks. The original ecosystem of the mine abandoned land was destroyed, forming extreme habitat conditions and affecting the settlement of plants, among which the high content of heavy metals in the soil and extreme pH were the most important limiting factors affecting plant growth. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01B79/02
CPCA01B79/02
Inventor 周文君田雪黎泉王业春曹华英杨超王序驰张正蕊曾鹏飞陈嘉健
Owner SHENZHEN WENKE GARDENING IND
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