A method of repairing quarry in permafrost area

Abstract

The invention discloses a method for restoring a quarry in a permafrost area, and relates to the technical field of geological restoration. It includes the following steps: step 1, cleaning the waste rock in the quarry area, stacking it in a centralized manner, and reserve; step 2, making two circles of gabion gabion retaining walls on the edge of the quarry, and the middle of the two circles of gabion gabion retaining walls The edge planting area is formed, and the area enclosed by the inner gabion retaining wall is the middle planting area; step 3, the edge planting pit is dug downward on the rock of the edge planting area, and the edge planting pit is dug downward on the rock of the middle planting area. Dig the middle planting pit; step 4, plant plants in the edge planting pit and the middle planting pit, backfill the first soil layer to the edge planting pit and the middle planting pit, and backfill the second soil layer on the rock surface of the edge planting area and the middle planting area, The sum of the thicknesses of the first soil layer and the second soil layer is greater than or equal to 100 cm; in step five, water and maintain the plants to complete the restoration. The invention has the advantages of reducing backfill, low cost and high plant survival rate.

Description

technical field [0001] The invention relates to the technical field of geological restoration, in particular to a method for restoring a quarry in a frozen land area. 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 quarrying method. After the resources are developed and utilized, the quarry will be abandoned. After being abandoned, the surface is all bare rock, with less soil-forming material and slow soil-forming speed; low soil water content, high surface temperature, and easy soil loss; slow phytoremediation process and low vegetation coverage; simple ecosystem structure, The function is low, the self-healing ability of vegetation is weak, and the harsh habitat conditions make it difficult to restore the vegetation of the abandoned quarry, which makes the ecological environment of the area slowly move towards rocky desertification. Therefore, ecological restoration ...

AI Technical Summary

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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