Improved method for compacted soil in surface mine dump

A technology for dumping sites and open-pit mines, which is applied in the fields of land preparation methods, earth drilling, botanical equipment and methods, etc., can solve the problems of reduced biological communities, low precipitation, large evaporation, etc., and achieve the goal of reducing vegetation ecological restoration Effect

Active Publication Date: 2020-05-19
CHINA UNIV OF MINING & TECH (BEIJING) +1
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  • Application Information

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Problems solved by technology

[0005] Open-pit coal mining has resulted in large-scale soil structure destruction and a sharp reduction in biological communities. The reconstruction of the dump site will lead to more complex soil reconstruction. Large-scale open-pit mines are mainly located in the grasslands of eastern China, where precipitation is low, evaporation is large, soil desertification is severe, and the background value of effective nutrients in the soil is low, which seriously restricts the growth of surface vegetation and ecological reconstruction in this area

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  • Improved method for compacted soil in surface mine dump
  • Improved method for compacted soil in surface mine dump
  • Improved method for compacted soil in surface mine dump

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Embodiment Construction

[0024] The present invention will be further described below in conjunction with specific embodiments. It should be understood that the following examples are only used to illustrate the present invention but not to limit the scope of the present invention.

[0025] The experimental methods used in the following examples are conventional methods unless otherwise specified.

[0026] The materials and reagents used in the following examples can be obtained from commercial sources unless otherwise specified.

[0027] The arbuscular mycorrhizal fungus is Glomusdiaphanum (BGC SC01B), and the number in the Chinese arbuscular mycorrhizal germplasm resource bank is BGC SC01B. It was disclosed in the document "Bi Yinli, Wu Fuyong, Liu Bohui, 2005, Preliminary Study on the Ecological Adaptability of AM Fungi in Coal Mine Wastes, Acta Mycophyta Sinica, 24(4):570-575". Publicly available from China University of Mining and Technology (Beijing).

[0028] Bromus without awn (Bromusinermi...

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Abstract

The invention discloses an improved method for compacted soil in a surface mine dump. According to the method, perennial gramineous plants including BromusinermisLeyss., Agropyroncristatum(L.)Gaertn,FestucaelataKeng ex E.Alexeev and Leymuschinensis(Trin.)Tzvel. are mixed with leguminous plants including Medicago falcata L. and Melissilusruthenicus(L.)Peschkova(TrigonellaruthenicaL.) to serve as acolonization plant which cooperates with arbuscular mycorrhizal fungi. The method provided by the invention can provide effective help for vegetation ecological restoration of the surface mine dump and can significantly reduce the compaction degree of the compacted soil, so that the method can be popularized.

Description

technical field [0001] The invention belongs to the field of soil improvement and relates to a method for improving long-term compacted soil in an open-pit mine dump. Background technique [0002] Soil compaction is common in cities and will bring a series of adverse consequences, such as increased soil compaction and bulk density. When the soil bulk density exceeds the soil bearing capacity, the soil porosity, air permeability and water permeability will be relatively reduced, affecting the flow of water in the soil, hindering the growth and extension of plant roots, and compacting the soil will also affect the availability of nutrients in the soil, changing soil chemicals, etc. Therefore, enhancing plant resistance, repairing and stabilizing urban green space soil systems are issues worth exploring. [0003] Under the action of external force, the surface soil sinks, the bulk density increases, and the soil permeability decreases, which is called soil compaction. In par...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01B79/02A01G22/00A01G22/40A01G18/10E21C41/32
CPCA01B79/02A01G18/10A01G22/00A01G22/40E21C41/32
Inventor 毕银丽宋子恒
Owner CHINA UNIV OF MINING & TECH (BEIJING)
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