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Ecological restoration method for metal mine waste yard

A technology for mine waste and ecological restoration, applied in botany equipment and methods, excavation, plant cultivation, etc., can solve problems such as ecological deterioration, environmental pollution of metal mine waste yards, etc., achieve mechanical properties and reduce engineering The effect of low cost and high impact resistance

Active Publication Date: 2016-08-10
BEIJING GENERAL RES INST OF MINING & METALLURGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to solve the problems of environmental pollution and ecological deterioration caused by metal mine waste dumps

Method used

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  • Ecological restoration method for metal mine waste yard
  • Ecological restoration method for metal mine waste yard
  • Ecological restoration method for metal mine waste yard

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] In this embodiment, the slope length of the storage yard 1 is 55 meters, without classification, and the slopes are all above 45°, and the slope of the storage yard 1 is relatively loose, and there is no soil layer, which seriously restricts the normal growth of plants. .

[0032] Such as figure 1 and image 3 As shown, the embodiment of the present invention provides an ecological restoration method for a metal mine waste dump, which mainly includes the following steps during implementation:

[0033] Step S1, repairing the metal mine waste storage yard 1 to form several ladder-shaped storage yards with trapezoidal slopes and slope cutting platforms; specifically, step S1 also includes step S11, performing stabilization treatment on the storage yard 1 , including clearing the pumice on the slope of the storage yard 1, filling the slope depression of the storage yard 1, and cutting the slope of the storage yard 1 to reduce the load to form a stepped storage yard. The l...

Embodiment 2

[0043] The slope length of the storage yard 1 in the embodiment of the present invention is 36m, is divided into two grades of side slopes, and the slope is all more than 55 °, and the slope of the storage yard 1 has a high degree of hardening, is alkaline, and does not have a soil layer. Not conducive to the restoration works of the preparation. When repairing the storage yard 1 of this embodiment, the construction steps are similar to those of the embodiment, and the similarities will not be repeated. The difference is that in step S23, the volume fraction A of the fermented sludge in the filling material 11 is 35%. , the volume fraction B20% of the light matrix, the volume fraction C of the loam is 45%, and the addition of the water-retaining agent is 500g; in step S3, the spraying thickness of the seed layer 6 is 4cm, and the volume of the light matrix in the seed layer 6 The fraction D is 40%, the volume fraction E of the loam is 60%, and the binder content is 12g / m 2 , ...

Embodiment 3

[0045] The slope length of the storage yard 1 in the third embodiment of the present invention is 80m, ungraded, and the slope is all above 55°, and the slope of the storage yard 1 has a high degree of looseness, and there is no soil layer, which seriously restricts the normal growth of plants. . A kind of slope ecological restoration method provided by this embodiment is similar to the slope ecological restoration method in Embodiment 1 and Embodiment 2, and the same parts will not be repeated, and the difference is that in step S1, the stockyard 1 Repairing is a four-level stepped slope, and the slope length of each level is 20m; the volume fraction A of the fermented sludge during the preparation of the filling material 11 in step S23 is 35%, and the volume fraction B of the light matrix is ​​30% %, the volume fraction C of the loam is 35%, and the addition of the water-retaining agent is 400g; In step S3, the spray thickness of the seed layer 6 is 4cm, and the volume fract...

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Abstract

The invention relates to the technical field of ecological restoration and in particular to a restoration method for a metal mine waste yard. The restoration method comprises the following steps of S1, finishing the metal mine waste yard to form a plurality of levels of step-like yard with trapezoid slopes and slope cutting platforms; S2, laying a filling type ecological blanket on each level of trapezoid slope; and S3, arranging a seed layer on each filling type ecological blanket. When the ecological restoration method is used for restoring the metal mine waste yard, the yard is refit firstly so at to prevent personal or a machine from being hurt or damaged as floating stones slip off in the ecological restoration construction process and improve the construction safety, then the filling type ecological blankets are laid, and the seed layers are laid finally, so that the filling type ecological blankets can isolate upper layer vegetations from the yard, prevent influences of the yard on growth of the vegetations and have the effect of rapidly restoring the vegetations; and with arrangement of the seed layers, the vegetations can be formed on the surface of the yard, rainfall leaching and natural weathering of yard wastes are effectively prevented, and the environmental harms are lowered.

Description

technical field [0001] The invention relates to the technical field of ecological restoration, in particular to a restoration method for metal mine waste storage yards. Background technique [0002] In my country, there are many lean metal mines, few rich mines, many polymetallic mines, few single minerals, extremely low metal grades, and high mineral stripping ratios, resulting in a large amount of solid waste. Non-ferrous metal sulfide mines produce an average of 1.25 tons of waste rock per ton of ore mined. In recent years, non-ferrous metal mines need to discharge 130 to 140 million tons of waste rock per year; the average output of each ton of ore is about 0.92 tons Sand and tailings will increase by about 110 million tons per year, and the comprehensive utilization rate of tailings will be less than 10%. Billions of tons of tailings and waste rock accumulated in metal mines occupy a large amount of farmland. [0003] The surface layer of the metal waste dump is mostl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D17/20A01G1/00A01G17/00
CPCA01G17/005A01G22/00E02D17/20
Inventor 王琼
Owner BEIJING GENERAL RES INST OF MINING & METALLURGY
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