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Efficient coal gangue dump ecological restoration method

A technology for ecological restoration and coal gangue, applied in land preparation methods, botanical equipment and methods, planting substrates, etc., can solve the problems of destroying vegetation and soil, and high production costs of covering substrates, achieving low production costs, controlled release, and economical efficiency. Good results

Active Publication Date: 2019-11-05
贵州鸿璟稀有金属开发应用科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the prior art generally adopts loam soil covering, which destroys vegetation and soil in other areas. In addition, the production cost of the covering substrate used is high

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] This embodiment is an outdoor simulated potted plant test, and the steps are as follows:

[0022] 1. Collect the newly produced sulfur-containing coal gangue samples from the coal mining area, air-dry them indoors, crush them, and screen out the slag below 3mm for storage.

[0023] 2. By volume, 25 parts of coal gangue slag, 15 parts of fly ash, 15 parts of Chinese herbal medicine residue, 15 parts of edible fungus waste residue, and 5 parts of loam are used to prepare the cultivation layer matrix of the gangue yard.

[0024] 3. Adopt 150 (diameter 15cm, height 13cm) polyethylene two-color plastic basins, fill the prepared coal gangue samples in the basins, cover the surface with 5cm culture layer matrix, and use no matrix and covered loam as controls. Evenly plant 5 plants of S. aurea in flower pots, and set a water receiving tray at the bottom.

[0025] 4. Water 500mL once a week to collect rainwater for daily maintenance. Sampling once a week to measure leachate pH...

Embodiment 2

[0029] This embodiment is an on-site small-scale test:

[0030] 1. Choose a small rock pile with a gentle slope in the coal gangue yard that has been weathered for many years, with an area of ​​about 2 mu, neatly arranged into a gentle slope with an inclination angle of less than 30°. Dig a 60cm×60cm circular planting pit every 5m.

[0031] In terms of parts by volume, 25 parts of coal gangue slag, 15 parts of fly ash, 15 parts of Chinese herbal medicine residue, and 15 parts of edible fungus waste slag are used to prepare the cultivation layer matrix of the gangue yard.

[0032] Evenly cover the cultivation layer matrix to the surface of the coal gangue with a thickness of 4-6 cm, and fill the planting pit with the cultivation layer matrix.

[0033] Planting is carried out in the tree planting season around mid-March, planting A. chrysanthemum plug seedlings with a row spacing of 15cm×15cm, and planting native tree species mulberry in the planting pits. After planting, wate...

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Abstract

The invention discloses an efficient coal gangue dump ecological restoration method. The method comprises the following steps that A, coal gangue slag, coal ash, Chinese herbal medicine residues, edible fungus residues and loam are adopted to prepare a cultivation layer medium; B, a coal gangue dump is arranged to form a gentle slope, according to the terrain, one planting pit is dug every 3-5 meters, the cultivation layer medium is laid on the surface layer of the coal gangue dump, the thickness is 4-6 cm, and the planting pits are filled; C, Sedum lineare Thunb. is planted on the cultivationlayer medium, and large indigenous plant seedlings are planted in the planting pits; D, after the surface of a dump body is basically covered with the Sedum lineare Thunb., pteridium aquilinum sporesare taken and spread; after pteridium aquilinum and indigenous plants grow and survive, coal gangue dump ecological restoration is completed. By means of the method, a good growth environment can beprovided for the restoration plants, a good vegetation coverage layer can be formed, and release of coal gangue contaminants is effectively controlled. The production cost of the cultivation layer medium is low, and the economical efficiency is high.

Description

technical field [0001] The invention relates to an ecological restoration method, in particular to an efficient coal gangue mountain ecological restoration method. Background technique [0002] It accounts for about 74% of my country's energy composition. Coal gangue is the gangue removed during the coal mining process and coal washing process, accounting for 15% to 20% of the raw coal output. At present, my country's coal gangue piles are huge, increasing year by year, and occupying a large amount of land. , The pollution of coal gangue seriously damages the ecological system of the mining area, affects the restoration of vegetation, and destroys the growth substrate of plants. In order to eliminate pollution, since the 1960s, many countries began to pay attention to the treatment and utilization of coal gangue. [0003] Vegetation greening on coal gangue hills is one of the effective ways to establish a stable and efficient artificial vegetation ecosystem on gangue hills a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01B79/02A01G24/00A01G24/17A01G24/22A01G24/20
CPCA01B79/02A01G24/00A01G24/17A01G24/22A01G24/20
Inventor 丁培文刘钢黄飞罗爱阮星淇
Owner 贵州鸿璟稀有金属开发应用科技有限公司
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