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A kind of soilless planting base material and its vegetation restoration construction method for vegetation restoration of metal ore waste rock field

A technology of vegetation restoration and construction method, which is applied in the fields of planting substrate, botanical equipment and method, land preparation method, etc., can solve the problem of the construction method of vegetation restoration of soilless planting base material that has not yet been seen, and restricts the large-scale implementation of vegetation restoration project in metal mines. , increase the cost of mine treatment and other issues, and achieve the effect of avoiding a large amount of dust and occupational health of workers, avoiding secondary ecological damage, and huge environmental and social benefits.

Active Publication Date: 2021-06-15
BEIJING MINING & METALLURGICAL TECH GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The waste rock field of a large-scale open-pit mining mine covers an area of ​​up to several square kilometers. According to the average covering soil of 20cm, the required planting earth volume reaches several million cubic meters. However, most of the mining areas in our country are distributed in deep mountain rocky areas, especially in the south. The mines have no soil at all, and some even purchase cultivated land from other places to obtain soil, which not only causes the loss of cultivated land, but also greatly increases the cost of mine management, which seriously restricts the large-scale implementation of vegetation restoration projects in metal mines
[0005] With the increasingly stringent environmental protection, making full use of mine solid waste and researching and developing soilless vegetation restoration technology in waste rock dumps has become an important way to promote green mine construction and sustainable development of the mining industry. So far, no relevant metal mines have been seen. Relevant reports on soilless planting substrates and construction methods for vegetation restoration in waste rock sites

Method used

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  • A kind of soilless planting base material and its vegetation restoration construction method for vegetation restoration of metal ore waste rock field

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0062] In this embodiment, the ecological restoration of the experimental area A is carried out, and the relevant technical parameters are as follows:

[0063] (1) During slope reconstruction, the height of the contour line is 20cm, the slope length of the large step slope is 10m, the distance between the main platforms is 30m, the width is 1.5m, the distance between the auxiliary platforms is 10m, and the width is 0.5m, and the platform width of the small step slope is 5cm;

[0064] (2) Thick paste-like acidic improvement material with a solid-to-liquid ratio of 3:10, corresponding to each square meter of waste rock field, the dosages of the HDS bottom mud, lime powder, rice husk and organic polymeric bonding agent are 0.1 m 3 , 2kg, 0.5kg and 5g;

[0065] (3) Soilless planting substrate, the volume ratio of HDS sediment, rice husk and fermented sludge is 25: 50: 25, based on the area of ​​the metal ore waste rock site to be restored, the organic polymeric binder and microbi...

Embodiment 2

[0068] In this embodiment, the ecological restoration of the experimental area B is carried out, and the relevant technical parameters are as follows:

[0069] (1) During slope reconstruction, the height of the contour line is 40cm, the slope length of the large step slope is 15m, the distance between the main platform is 45m, the width is 2.5m, the distance between the auxiliary platforms is 15m, the width is 1.0m, and the platform width of the small step slope is 15cm;

[0070] (2) Thick slurry acidic improvement material, the solid-to-liquid ratio is 5:10, corresponding to each square meter of waste rock field, the dosage of the HDS bottom mud, lime powder, rice husk and organic polymer binder is 0.3 m 3 , 4kg, 1.0kg and 10g;

[0071] (3) Soilless planting substrate, the volume ratio of HDS sediment, rice husk and fermented sludge is 50: 25: 25, based on the area of ​​the metal ore waste rock site to be restored, the organic polymeric binder and microbial bacteria The add...

Embodiment 3

[0074] In this embodiment, the ecological restoration of the experimental area C is carried out, and the relevant technical parameters are as follows:

[0075] (1) During the slope reconstruction, the height of the contour line is 30cm, the slope length of the large step slope is 12m, the distance between the main platform is 40m, the width is 2.5m, the distance between the auxiliary platforms is 12m, the width is 1.0m, and the platform width of the small step slope is 15cm;

[0076] (2) Thick paste-like acidic improvement material with a solid-to-liquid ratio of 4.5:10, corresponding to each square meter of waste rock field, the dosages of the HDS bottom mud, lime powder, rice husk and organic polymeric bonding agent are 0.3 m 3 , 3kg, 1.0kg and 8g;

[0077] (3) Soilless planting substrate, the volume ratio of HDS sediment, rice husk and fermented sludge is 40: 35: 25, based on the area of ​​the metal ore waste rock site to be restored, the organic polymeric binder and micro...

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Abstract

The invention discloses a soilless planting base material for vegetation restoration in a waste rock field of metal mines and a vegetation restoration construction method thereof. The soilless planting base material includes HDS bottom mud, rice husk, fermented sludge, organic polymeric bonding agent and microorganisms Bacteria agent; its vegetation restoration construction method comprises, after metal ore waste rock field is carried out pretreatment, the acidic improvement material that acidic improvement matrix and water are made thick paste, sprays to the metal ore waste rock field surface to be restored and solidifies , and then mix the soilless planting substrate and plant seeds evenly, and then blow and sow them on the surface of the metal ore waste rock field containing the acidic improvement layer. The soilless planting base material of the present invention can realize the resource utilization of solid waste and the recovery of soil-free vegetation in metal ore waste rock fields, and adjust the content of organic nitrogen, phosphorus, potassium, and organic matter in the soil; the environmental benefits and social benefits of its vegetation recovery construction method The utility model has the advantages of good benefit and simple process, can avoid the problems of a large amount of dust in the existing construction and harmful to workers' health, has good effect, and is suitable for large-area application.

Description

technical field [0001] The invention belongs to the technical field of vegetation restoration, and relates to a vegetation restoration of a metal ore waste rock field, in particular to a soilless planting base material for vegetation restoration of a metal ore waste rock field and a construction method for vegetation restoration thereof. Background technique [0002] Acidification of mining waste is a relatively common phenomenon in the prior art. Metal mines have a large proportion of sulfide in minerals, accounting for about 75% of the total amount of various minerals. Due to the extremely low grade and high mineral stripping ratio, a large amount of solid waste is generated; 1 ton of ore produces an average of 1.25 tons of waste rock. In recent years, about 130-140 million tons of waste rock have to be discharged per year, and billions of tons have been accumulated. [0003] The waste rocks are piled in the open air, and under the catalysis of microorganisms such as Thio...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K17/40C05F5/00C05F11/08C05G3/00C05G3/80C05F15/00C05F17/20A01B79/02A01C7/00A01G17/00A01G20/00A01G22/00A01G24/12A01G24/20A01G24/25A01G24/30C09K101/00
CPCA01B79/02A01C7/00A01C7/008A01G17/005A01G20/00A01G22/00A01G24/12A01G24/20A01G24/25A01G24/30C05F5/002C05F7/00C05F11/08C05G3/00C09K17/40C09K2101/00C05F17/20C05G3/80Y02W30/40Y02A40/20
Inventor 王琼李昊孙伟孟磊杨越晴
Owner BEIJING MINING & METALLURGICAL TECH GRP CO LTD
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