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Pyrite mine abandoned land ecological restoration method

A restoration method and abandoned land technology, applied in the direction of land preparation methods, applications, agricultural machinery and tools, etc., can solve the problems of acidity, ineffective reduction of heavy metal hazards, waste of clean soil, high cost of covering soil, etc., to reduce soil erosion, The operation is simple and convenient, and the effect of eliminating secondary acidification and pollution

Inactive Publication Date: 2018-07-13
HUATIAN NANJING ENG & TECH CORP MCC +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It can be seen that the cost of simple covering soil is high, and it has no obvious effect on reducing acidity and reducing the hazards of heavy metals. Instead, it causes waste of clean soil and does not fundamentally solve the problem of mine governance.

Method used

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  • Pyrite mine abandoned land ecological restoration method
  • Pyrite mine abandoned land ecological restoration method

Examples

Experimental program
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Effect test

Embodiment 1

[0025] to combine figure 1 and figure 2 In this embodiment, a method for ecological restoration of abandoned pyrite mines is provided, comprising the following steps:

[0026] (1) Excavate the site to be treated to obtain the backfill pit and the acid matrix to be repaired;

[0027] (2) Prepare a modifier, and mix the prepared modifier with the acidic substrate to be repaired to perform maintenance treatment to obtain the repaired acidic substrate;

[0028] (3) lay rubble in the backfill pit as an isolation diversion layer;

[0029] (4) Backfill the repaired acid matrix into the backfill pit laid with rubble, cover with topsoil and plant vegetation.

[0030] The method for ecological restoration of pyrite mine waste land of the present invention is simple to operate, can control the migration and transformation of pollution sources from the source, and can also prevent secondary acidification and pollution of the substrate layer and cultivated soil, and has an obvious effe...

Embodiment 2

[0032] In this embodiment, as the specific scheme of embodiment 1, the method for the ecological restoration of pyrite mine waste land in this embodiment is specifically: (1) excavate the site to be treated, the excavation depth is 30-50cm, and obtain the backfill pit And the acid matrix to be repaired, the acid matrix to be repaired is broken and spread on the flat ground with an impermeable membrane at the bottom.

[0033] (2) Mix and stir 3-5 parts by mass of slaked lime and 5-7 parts by mass of pig manure to obtain the improver, and add the improver to the acidic matrix to be repaired according to the application rate of 4%-6%, and mix well Combined, and under the condition of 20-25% water content, curing for 7-10 days to ensure full reaction to obtain the repaired acidic matrix.

[0034] (3) Lay rubble in the backfill pit as an isolation diversion layer. The laying method is to lay the rubble from top to bottom according to the size of the rubble; the thickness of the rub...

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Abstract

The invention discloses a pyrite mine abandoned land ecological restoration method. The method comprises the following steps that 1, a to-be-treated field is excavated to obtain a backfill pit and a to-be-repaired acidic matrix; 2, a modifier is prepared, the prepared modifier is mixed with the to-be-repaired acidic matrix, and a repaired acidic matrix is obtained after maintenance; 3, ashlar is laid in the backfill pit as an isolation flow guide layer; 4, the repaired acidic matrix is backfilled into the backfill pit paved with the ashlar, and vegetation is planted after the backfill pit is covered with surface soil. According to the pyrite mine abandoned land ecological restoration method, slaked lime and pig manure are used for acid improvement and heavy metal stabilization, the ashlarlayer is used for acidic barrier, and then purchased planting soil and the vegetation restoration are used for achieving revirescence, so that the mine abandoned land environment problem is truly solved, and resource utilization is achieved.

Description

technical field [0001] The invention relates to an ecological restoration method for pyrite mine waste land, which is used for comprehensive management and land reuse of mine waste land. Background technique [0002] Mineral resources are an important material basis for the survival and development of human beings, and have made great contributions to the development of human society and the rapid progress of civilization. But at the same time, the development and utilization of mineral resources has also produced a large number of abandoned mines. Mine mining and smelting have formed 4 billion tons of tailings, and are still increasing at a rate of 2 million tons per year. Abandoned mine land not only occupies a large amount of land resources, but also causes damage to the ecological environment, and even threatens the safety of human life. It urgently needs to be properly treated and repaired. [0003] The matrix of mine waste land has the characteristics of poor physica...

Claims

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Application Information

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IPC IPC(8): A01B79/02
CPCA01B79/02
Inventor 朱巧红安忠义项萌李明冉景夏溢高卫民刘金光焦朋朋
Owner HUATIAN NANJING ENG & TECH CORP MCC
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