Ecological restoration method for geological environment of coal mine

Abstract

The invention discloses an ecological restoration method for the geological environment of a coal mine. The ecological restoration method for the geological environment of the coal mine comprises the following steps that S1, an open pit coal mine is investigated; S2, at the initial stage of comprehensive treatment, structures, garbage and waste influencing construction in a treatment area are removed; S3, surface soil is collected; S4, overlying rock is stripped, and stripped objects are stacked at a pre-selected site; S5, residual coal is extracted; S6, a deep boundary coal pillar is blocked and covered; S7, a repair area is backfilled and leveled, specifically, the repair area is backfilled, leveled and compacted by using the rock which is stripped firstly; S8, matrix soil covering is conducted; S9, after the matrix soil is backfilled, appropriate plants are selected for planting within the matrix soil backfilling range to conduct ecological restoration; S10, management is conducted after restoration; and S11, microorganisms are added, so that the fertility and air permeability of the soil are favorably preserved. According to the ecological restoration method for the geological environment of the coal mine, waste open pit coal mines and solid waste are subjected to resource utilization, so that the restoration cost is reduced, and ecological balance is achieved.

Description

technical field [0001] The invention relates to the technical field of ecological restoration, in particular to a method for ecological restoration of the geological environment of coal mines. Background technique [0002] my country is rich in coal resources, and there are many open-pit mines. But this has also led to the occupation and waste of a large amount of land resources. Goafs, dumps, and tailings in mines will produce a large number of high, steep and unstable abandoned slopes, which will expose the surface of the area, cause water and soil erosion, and degrade biodiversity. Cause subsidence, collapse, landslide and other geological disasters, lead to the imbalance of the ecological system in the mining area, and restrict the sustainable economic development of a region. [0003] At present, the more extensive mine restoration methods include: surface covering method, foreign soil landfill method, aerial planting vegetation method, and each method has certain sho...

AI Technical Summary

Problems solved by technology

The implementation cost of the surface covering method is high, the effect is unsustainable, and it is a kind of damage to the cultivated land resources.

Foreign soil landfill, that is, to cover the original mine with foreign soil, the workload is heavy and the cost is high

The aerial planting method requires special equipment to spray on the slope, and the maintenance time is long in the later stage, and it is greatly restricted by the site.

The above three methods all have problems such as long repair period, high repair cost, inconspicuous repair effect and too single purpose.

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