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 mi

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0029] Example 1 Vegetation restoration in a wasteland of a copper mine in Dexing, Jiangxi

[0030] The terrain of the abandoned land is a sloping land made of waste. 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) Arrangement of near-natural terrain in abandoned land. The wasteland is arranged near natural topography, the slope of the pile body is trimmed according to the slope of the natural repose angle, and the top of the slope is flattened to form a storage yard with a stepped slope, and an ecological bag retaining wall is set at the foot of the slope. The length of the stepped 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) Stabilization of heavy metals. The surface layer of the waste ground is evenly covered with heavy metal stabilizer, and manual raking is used to mix the stabilizer with th...

Example Embodiment

[0041] Example 2 Restoration and management of vegetation in a wasteland of an aluminum mine in Zibo, Shandong

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

[0043] (1) Arrangement of near-natural terrain in abandoned land. The wasteland is arranged near natural terrain, and the slope of the pile is arranged according to the slope not greater than the natural repose angle to form a pile yard with a trapezoidal slope and 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 height of the ecological bag retaining wall is 1.2m.

[0044] (2) Stabilization of heavy metals. The surface layer of the abandoned ground is evenly covered with heavy metal stabilizer, and the rake is used to mix the stabilizer and the shallow...

Example Embodiment

[0052] Example 3 Restoration and management of vegetation in a wasteland of an aluminum mine in Shandong

[0053] The mine's abandoned site is a flat land with potholes. The process of recovery management is the same as that of Example 2, and the different steps are:

[0054] (1) High digging and low filling to level the flat ground;

[0055] (4) Set up interception and drainage ditch in abandoned land. Set up drainage ditch on flat ground, the ditch is 80-120cm wide and 40-60cm deep. Drainage ditch spacing is 25m.

[0056] The recovery and treatment effect achieved is the same as that of 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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