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Ultrahigh altitude copper-gold mine wasteland greening method

A wasteland and altitude technology, applied in land preparation methods, botanical equipment and methods, excavation, etc., can solve the problems of lack of vegetation restoration methods in mine wasteland, large evaporation in ultra-high altitude areas, and large temperature difference between day and night, and achieve good results. The effect of isolation and water retention, strong resistance to rain erosion, and small permeability coefficient

Inactive Publication Date: 2019-03-26
青岛冠中生态股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The invention provides a method for regreening the abandoned land of copper-gold mines at ultra-high altitudes, which can effectively deal with the problems of large evaporation, large sandstorms, and large temperature differences between day and night in ultra-high altitude areas, and solves the problems in the prior art that are not suitable for ultra-high-altitude areas such as Tibet. Technical Problems of Vegetation Restoration Method for Mine Abandoned Land in Harsh Natural Environment at High Altitude

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  • Ultrahigh altitude copper-gold mine wasteland greening method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0056] A method for regreening the abandoned land of an ultra-high altitude copper-gold mine, the steps are as follows:

[0057] (1) Slope finishing

[0058] Mountains with a slope greater than 70 degrees should be slope-cut;

[0059] (2) Interception and drainage works

[0060] Set intercepting ditches at the top of the slope, vertical drainage ditch on the slope surface, and drainage ditch at the bottom of the slope;

[0061] (3) hanging protective net

[0062] A protective net is laid on a site with a slope greater than 30°, the protective net includes an upper metal protective net and a lower flexible protective net, the metal protective net is anchored with a metal anchor, and the flexible protective net is fixed with a steel wire anchor; The metal mesh is a hot-dip galvanized wire mesh with an aperture of 20*20cm, the flexible protective mesh is a steel wire rope mesh with an aperture of 2*2m, and the metal anchor is a steel anchor.

[0063] (4) Artificial soil matri...

Embodiment 2

[0071] The volume ratio of the middle and lower layers, middle and upper layers, and surface layer components of the soil matrix of this embodiment is different from that of Embodiment 1, and other steps are all the same as that of Embodiment 1.

[0072] In the soil matrix of this embodiment, the middle and lower layer matrix includes the following components and component volume ratios: 45% of loam soil, 35% of decomposed highland barley straw, 14.05% of crushed highland barley straw, 0.15% of compound microbial preparation, 5.6% of biochar, 0.2% polyglutamic acid; the upper and middle matrix includes the following components and component volume ratios: 45% loam soil, 35% decomposed highland barley straw, 13.65% crushed highland barley straw, 0.15% compound microbial preparation, 5.6% biochar, poly 0.2% of glutamic acid, 0.4% of seeds; the surface matrix includes the following components and component volume ratios: 23% of loam, 75% of highland barley straw crushed and passed...

Embodiment 3

[0074] The volume ratio of the middle and lower layers, middle and upper layers, and surface layer components of the soil matrix of this embodiment is different from that of Embodiment 1, and other steps are all the same as that of Embodiment 1.

[0075] In this embodiment, the middle and lower layer matrix includes the following components and component volume ratios: 40% loam, 40% decomposed highland barley straw, 11.4% crushed highland barley straw, 0.3% compound microbial preparation, 8% biochar, polyglutamine acid 0.3%; the upper and middle layers of the matrix include the following components and component volume ratios: 40% loam, 40% decomposed highland barley stalks, 11% crushed highland barley stalks, 0.3% compound microbial preparations, 8% biochar, polyglutamic acid 0.3%, seeds 0.4%; the surface matrix includes the following components and component volume ratios: 18% of loam, 80% of highland barley straw crushed and passed through a 4-mesh sieve, and 2% of soil bind...

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Abstract

The invention provides an ultrahigh altitude copper-gold mine wasteland greening method, which comprises the following steps of: (1) conducting slope consolidation, namely slope cutting treatment on amountain body with the gradient of more than 70 degrees; (2) constructing intercepting drainage engineering, wherein the top of the slope is provided with an intercepting channel, the slope surface is provided with a vertical drainage ditch, and the bottom of the slope is provided with a drainage ditch; (3) hanging a protective net, laying the protective net on a site with the gradient of more than 30 degrees, combining a metal protective net with a flexible protective net to form the protective net , anchoring the metal protective net by using a metal anchor rod, and fixing the flexible protective net by using a steel wire rope anchor rod; (4) conducting artificial soil matrix construction, which comprises the following steps of spraying and sowing granules, uniformly spraying and sowing2 cm of a bottom matrix on a protective net to form a sealing layer, uniformly spraying and sowing 4-5 cm of a middle-lower layer matrix on the bottom layer, uniformly spraying and sowing 1-2 cm of amiddle-upper layer matrix on the middle-lower layer matrix, and spraying 0.5-1 cm of a surface layer matrix on a seed layer matrix; (5) implementing maintenance management. The super-high altitude copper-gold mine wasteland greening method can effectively cope with the severe environment in the ultrahigh altitude area, and has the advantages of good effect of vegetation greening and effective improvement of the ecological environment of the wasteland.

Description

technical field [0001] The invention relates to the technical field of regreening abandoned copper-gold mines, in particular to a method for regreening abandoned copper-gold mines at ultra-high altitudes. Background technique [0002] With the development of mineral resources in Tibet, a large area of ​​copper and gold mining areas have appeared at ultra-high altitudes (higher than 3,500 meters above sea level), and the abandoned land after mining has seriously damaged the local ecological environment. The ecosystems in ultra-high altitude areas are already very fragile, and the generation of large-scale abandoned copper and gold mines has further increased the pressure on regional ecological protection. The ecological restoration of copper-gold mine wasteland in high-altitude areas needs to overcome extreme climatic conditions such as high radiation, high evaporation, and hypoxia in ultra-high-altitude areas, as well as the barren environment of mine wasteland. Existing ec...

Claims

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Application Information

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IPC IPC(8): A01B79/02A01G24/46E02D17/20E03F5/04
CPCA01B79/02A01G24/46E02D17/20E03F5/04Y02A30/60
Inventor 许剑平孟凡奎曲宁曹凤娟杨悦
Owner 青岛冠中生态股份有限公司
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