Comprehensive treatment method for restoration of gangue hill ecological environment

Abstract

The invention provides a comprehensive treatment method for restoration of gangue hill ecological environment. The method specifically comprises the following steps of carrying out gangue hill slope cutting, shaping and fire extinguishing engineering, carrying out enclosure and isolation engineering, carrying out soil covering engineering, carrying out semi-flexible rapid drainage system engineering, carrying out nutrient soil construction engineering, carrying out anti-erosion vegetation restoration engineering and carrying out vegetation maintenance system engineering. According to the method, through reasonable gangue hill slope cutting and a semi-flexible rapid drainage system, a gangue hill can be ensured to be safe and stable; through gangue hill fire extinguishing and enclosure andisolation, the damage to the gangue hill can be thoroughly eliminated; through scientific and reasonable soil improvement through soil exchange, vegetation can grow fast and permanently; through an anti-erosion vegetation restoration technology, the erosion of wind and rain to a side slope can be resisted; and a reasonable vegetation maintenance system is designed, so that the problems of vegetation irrigation and fertilization of the side slope of the gangue hill can be solved, and water and soil loss of the side slope of the gangue hill can be prevented. The method has the advantages that acombination of measures are taken from the seven key points, so that the damage of spontaneous combustion of the gangue hill to the environment can be avoided, a plant community can be quickly formed,and the restoration of the mine ecological environment can be realized.

Description

technical field [0001] The invention belongs to the technical fields of environmental management, land reclamation, ecological reconstruction, and mine ecological restoration, and in particular relates to a comprehensive treatment method for ecological environment restoration of gangue hills. Background technique [0002] Coal gangue is currently one of the largest industrial solid wastes in China, with an annual output of hundreds of millions of tons. Due to the limitations of existing technical means, the current resource utilization rate is very low, and most of them are piled on the ground to form gangue hills. At present, more than 5 billion tons have been piled up, and the annual increase is hundreds of millions of tons. In Shanxi alone, there are thousands of waste rock dumps, and the largest pile of waste rock piles reaches tens of millions of tons. Because coal gangue contains sulfide, it is very easy to oxidize and spontaneously ignite, producing a large amount of ...

AI Technical Summary

Problems solved by technology

[0008] (2) Vegetation technology is backward, and conventional vegetation technology cannot control rain erosion, especially the vegetation planted on a large number of slopes of gangue hills, it is difficult to survive by itself, let alone resist rain erosion

[0009] (3) Nutrient deficiency in the planting layer

The covering soil generally adopts the foreign soil around the gangue hill. The foreign soil is generally poor and lacks organic matter and nutrients, which makes the growth effect of the vegetation poor and cannot play the role of slope protection.

[0010] (4) No vegetation maintenance or improper maintenance

[0024] (1) Unreasonable slope design and height difference design of graded horse tracks will aggravate rain erosion, and at the same time, the natural wind pressure formed by the height difference will aggravate air leakage and oxygen supply

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