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Method for repairing frozen soil layer in plateau alpine mining area

A repair method, technology of frozen soil layer, applied in the direction of land preparation method, botany equipment and method, filling, etc.

Active Publication Date: 2022-03-25
中国煤炭地质总局勘查研究总院
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] At present, there is a lack of comprehensive restoration technologies for permafrost reconstruction, water conservation, and vegetation regeneration. Most of them are simple restoration solutions that directly plant vegetation on the slag hills and turn mining pits into artificial lakes.

Method used

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  • Method for repairing frozen soil layer in plateau alpine mining area
  • Method for repairing frozen soil layer in plateau alpine mining area
  • Method for repairing frozen soil layer in plateau alpine mining area

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Embodiment Construction

[0050] The permafrost 1 restoration method of the plateau alpine mining area provided in this embodiment, such as Figure 1-Figure 2 shown, including the following steps:

[0051] S100: Backfilling of permafrost layer 1: Backfilling the slag mountain or mining pit with frozen soil layers 101, each layer is 4-5m thick, compacted in layers, and the first fine-grained slag layer 102 is laid on the bottom of each layer ;

[0052] S200: Reconstruction of the active layer 2: Lay the second fine-grained muck layer 201 above the permafrost layer 1 to form an active relative water-resisting layer; lay a permeable layer above the active relative water-resisting layer, and the permeable layer includes the lower first Three fine-grained muck layers 202 and the upper coarse-grained muck layer 203;

[0053] S300: Reconstructing the protective layer 3: laying a soil matrix layer 301 above the permeable layer, plowing and mixing the soil conditioner and the soil matrix layer 301, and then s...

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Abstract

The invention relates to a method for repairing a frozen soil layer in a plateau high and cold mining area, which comprises the following steps: S100, backfilling the frozen soil layer: backfilling a slag hill or a mining pit in a layered manner, compacting in a layered manner, and paving a first fine-grain slag soil layer at the bottom of each layer; s200, a movable layer is reconstructed, specifically, a second fine-grain muck layer is laid on the frozen soil layer, and a movable relative water-resisting layer is formed; a permeable layer is laid above the movable relative water-resisting layer, and the permeable layer comprises a third fine-grain muck layer on the lower portion and a coarse-grain muck layer on the upper portion; s300, reconstruction of a protective layer: a soil matrix layer is laid above the permeable layer, a soil conditioner and the soil matrix layer are ploughed and mixed, and then organic fertilizer is applied and scattered; and S400, vegetation regeneration, wherein plants are sown on the soil matrix layer where the organic fertilizer is applied and scattered, and enclosure breeding is conducted.

Description

technical field [0001] The invention belongs to the technical field of restoration of plateau alpine mining areas, and in particular relates to a method for repairing permafrost in plateau alpine mining areas. Background technique [0002] There are unbalanced, uncoordinated, and unsustainable problems in the development of the coal industry, and coal mining in plateau and alpine regions has major problems such as the fragility of the natural environment and the difficulty of repairing once it is damaged. The plateau alpine region is an important water source and ecological conservation area, and an important part of the plateau ecological barrier. It is necessary to strengthen the protection and restoration of permafrost in alpine mining areas and the protection of the ecological environment. [0003] Coal mining has formed mining pits and slag mountains of various sizes on the surface, seriously affecting the ecological landscape, ecological security barriers, water conser...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01B79/02A01G20/00E02D17/18E02D3/10E02D3/12E03F5/04
CPCA01B79/02A01G20/00E02D17/18E02D3/10E02D3/12E03F5/0401
Inventor 王佟曹银贵周伟孙杰胡云霄
Owner 中国煤炭地质总局勘查研究总院
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