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

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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Example Embodiment

[0024] Example 1

[0025] Combine figure 1 with figure 2 In this embodiment, a method for ecological restoration of pyrite mine wasteland is provided, which includes the following steps:

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

[0027] (2) Prepare a modifier, and mix the prepared modifier with the acid matrix to be repaired for curing treatment to obtain the repaired acid matrix;

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

[0029] (4) Backfill the restored acid matrix into a backfill pit paved with rubble, and plant vegetation after covering it with topsoil.

[0030] The above-mentioned ecological restoration method of pyrite mine wasteland 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 substrate layer and cultivated soil, and has obvious effect o...

Example Embodiment

[0031] Example 2

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

[0033] (2) Mix 3-5 parts by mass of slaked lime and 5-7 parts by mass of pig manure to obtain the modifier, and add the modifier to the acid matrix to be repaired at an application rate of 4% to 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 acid matrix.

[0034] (3) Laying rubble in the backfill pit as an isolation diversion layer. The laying method is to lay from small to large according to the size of rubble; the thickness of rubble layer is generally 1...

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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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