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Vegetation recovery method for nonferrous metal mining wasteland

A non-ferrous metal and vegetation restoration technology, which is applied in the fields of site preparation methods, botanical equipment and methods, water conservancy projects, etc., can solve the difficult problems of vegetation restoration, achieve remarkable governance effects, prevent the diffusion of heavy metals and pollute the environment, and improve efficiency Effect

Active Publication Date: 2013-03-20
江苏绿之源生态建设有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Most of the precipitation leaching leachate in abandoned non-ferrous metal mines is strongly acidic or alkaline, and it is difficult to restore vegetation

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Example 1 Vegetation Restoration of an Abandoned Copper Mine in Dexing, Jiangxi

[0030] The terrain of the abandoned land is a slope made of waste, and the surface soil contains heavy metals such as copper and arsenic, and the soil is weakly acidic. The processing steps are as follows:

[0031] (1) The abandoned land is arranged near the natural topography. The near-natural topography is carried out on the abandoned land, and the slope of the pile is flattened according to the slope of the natural repose angle to form a storage yard with a stepped slope, and an ecological bag retaining wall is set at the foot of the slope. The slope length of the step slope is 6m, the width of the step platform is 1.5m, and the height of the ecological bag retaining wall is 0.6m.

[0032] (2) Heavy metal stabilization treatment. The surface of the abandoned land is evenly covered with heavy metal stabilizers, and the stabilizer is mixed with the waste at a depth of 20-30cm in the sh...

Embodiment 2

[0041] Example 2 Vegetation Restoration and Treatment of Abandoned Aluminum Mine in Zibo, Shandong

[0042] Part of the abandoned land of the mine is slope land. The surface contains iron, titanium, scandium and other metals. The surface soil is alkaline. The treatment process of wasteland with sloping land is as follows:

[0043] (1) The abandoned land is arranged near the natural topography. Near-natural topography is implemented on abandoned land, and the slope of the pile is arranged according to the slope not greater than the natural repose angle to form a storage yard with a trapezoidal slope and a platform, and an ecological bag retaining wall is set at the foot of the slope. The trapezoidal slope is 8m long, the platform width is 3m, and the ecological bag retaining wall is 1.2m high.

[0044] (2) Heavy metal stabilization treatment. The surface of the abandoned land is evenly covered with heavy metal stabilizers, and rakes are used to mix the stabilizer and shall...

Embodiment 3

[0052] Example 3 Vegetation Restoration and Treatment of Abandoned Land of an Aluminum Mine in Shandong

[0053] The abandoned land of the mine is flat land with potholes. The process of restoring governance is the same as that in Embodiment 2, the different steps are:

[0054] (1) Carry out high excavation and low filling leveling on the flat land;

[0055] (4) Cutting and drainage ditches for abandoned land. The drainage ditch is set on the flat ground, the ditch width is 80-120cm, and the ditch is an arc-shaped ditch with a depth of 40-60cm. The distance between drainage ditches is 25m.

[0056] The recovery effect achieved is the same as in Example 2.

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Abstract

The invention provides a vegetation recovery method for a nonferrous metal mining wasteland, which comprises the following steps: 1), terrain consolidation; 2), heavy metal stabilizing disposal; 3), shallow acid-base improvement and flexible impervious isolation: spraying the mixture of an acid-base modifier, a vegetative matrix and resin to a wasteland surface; 4), setting a section of drainage ditch; and 5), laying a vegetation cushion: laying a vegetation cushion on a slope surface and fixing the vegetation cushion with an anchor rod. The method provided by the invention combines the terrain consolidation, the heavy metal stabilizing disposal, the shallow acid-base improvement, the surface layer impervious isolation, wasteland vegetation recovery and other technologies to prevent heavy metal ions from relocating and diffusing to pollute the environment; the wasteland vegetation system is recovered; and the vegetation recovery method is high in standardization and industrialization level, is 2 to 3 times higher than a conventional soil replacement spray-sowing greening method in efficiency, low in governance cost, suitable for the popularization and application of ecological environmental management of large-area nonferrous metal mining wastelands, and remarkable and stable in effect.

Description

technical field [0001] The invention belongs to the field of ecological restoration, and in particular relates to a treatment method for vegetation restoration of abandoned nonferrous metal mines. Background technique [0002] Non-ferrous metals are essential basic materials and important strategic materials for national economy, people's daily life, national defense industry, scientific and technological development. One of the characteristics of China's non-ferrous metal resources is that there are many composite ores, and some of them are of low grade. During the mining, smelting and processing of non-ferrous metal ores, a large amount of waste rocks, tailings, slag and other solid wastes are produced. At present, the annual production of solid waste in the non-ferrous metal industry in my country is estimated to be 200-300 million tons, the comprehensive utilization rate of solid waste in the non-ferrous metal industry is still low, and a large amount of solid waste is p...

Claims

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Application Information

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IPC IPC(8): A01G1/00A01B77/00A01B79/00E02B11/00E02D29/02
Inventor 辜再元祁有祥王京燕
Owner 江苏绿之源生态建设有限公司
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