Restoration method for quarry in frozen soil region

Abstract

The invention discloses a restoration method for a quarry in a frozen soil region, and relates to the technical field of geological restoration. The restoration method comprises the following steps that S1, waste rocks in a quarry region are cleared, and are intensively stacked for later use; S2, two circles of gabion retaining walls are manufactured at the edge of the quarry, an edge planting region is formed in the middle of the two circles of gabion retaining walls, and a region defined by the inner circle of gabion retaining wall is a middle planting region; S3, the rock of the edge planting region is downwards dug to form edge planting pits, and the rock of the middle planting region is downwards dug to form middle planting pits; S4, a plant is planted in each of the edge planting pits and the middle planting pits; a first soil layer is backfilled into each of the edge planting pits and the middle planting pits; a second soil layer is backfilled to the rock surface of each of theedge planting regions and the middle planting regions; and the thickness sum of each first soil layer and the corresponding second soil layer is greater than or equal to 100 cm; and S5, watering and conserving the plants to finish restoration. The restoration method has the advantages that backfill soil is reduced, cost is low, and the survival rate of the plants is high.

Description

technical field [0001] The invention relates to the technical field of geological restoration, in particular to a restoration method for quarries in permafrost regions. Background technique [0002] The quarry is an area formed by artificial mining of stone or minerals, and most of the existing quarries adopt the open-air quarry method. After the resources are developed and utilized, the quarry will be abandoned, and the natural waste, the quarry After being abandoned, the surface is all bare rocks, and there are few substances that form soil, and the soil-forming speed is slow; the soil moisture content is small, the surface temperature is high, and the soil is easy to lose; the phytoremediation process is slow, and the vegetation coverage is low; the ecosystem structure is simple, The function is low, the self-repair ability of the vegetation is very weak, and the harsh habitat conditions make it difficult for the vegetation in the abandoned quarry to be repaired, making t...

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Problems solved by technology

[0005] The above-mentioned prior art scheme has the following defects: although the above-mentioned scheme can be used to repair limestone mine pits, because it needs to backfill the planting soil layer of 3-5 meters, the cost of backfilling is too high, and it is difficult to be used for repairing mining in permafrost areas. Therefore, there is an urgent need for a quarry restoration method in permafrost regions that can take into account restoration cost and seedling survival rate

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