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Ecological restoration method of iron mine steep slope waste rock field in northern area

A technology for ecological restoration and rock drainage, applied in botany equipment and methods, horticulture, plant cultivation, etc., can solve undiscovered problems and achieve the effects of accelerating ore weathering, improving landscape aesthetics, and improving soil structure

Inactive Publication Date: 2015-11-25
SHENYANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The present invention aims at the above-mentioned problems, and combines the climate characteristics of the northern region and the characteristics of the iron ore rock drainage field to provide an ecology suitable for the rock drainage field where a large amount of waste slag is accumulated after the iron ore mining and selection of the surrounding rock with high hardness in the northern region. Recovering method, in further search, have not yet found the same or similar bibliographical reports with the present invention

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] 1) The slope of the rock drainage field is 40-50°, and fish scale pits are dug from top to bottom on the steep slope of the rock drainage field. The size of the fish scale pits is 0.4m in diameter and 0.5m deep. The row spacing is 1.0m; a 0.4m wide small platform is built at 0.7m below every two rows of fish scale pits, and a runoff ditch with a width of 0.2m and a depth of 0.1m perpendicular to the direction of the slope is dug on the small platform every 5m; A stone embankment with a width of 1.0m is built at the foot of the slope of the rock field. It is mainly formed by the accumulation of large abandoned ore rocks around it. The middle is connected with iron wires, and the barbed wire is anchored to the ground with rivets.

[0026] 2) Fill artificial substrates in fish scale pits, and lay a layer of degradable plastic film on the bottom of each fish scale pit. Since the rock drainage field is mainly composed of ore sand, with large pores and poor water holding capa...

Embodiment 2

[0030]1) The slope of the rock drainage field is 50-70°, and fish scale pits are dug from top to bottom on the steep slope of the rock drainage field. The size of the fish scale pits is 0.3m in diameter and 0.6m deep. The row spacing is 1.2m; a 0.3m wide small platform is built at 0.8m below every two rows of fish scale pits, and a runoff ditch with a width of 0.2m and a depth of 0.1m perpendicular to the slope is dug on the small platform at intervals of 5m; A stone embankment with a width of 1.2m is built at the foot of the site slope. It is mainly formed by the accumulation of large abandoned ore rocks around it. The middle is connected with iron wires, and the wire mesh is anchored to the ground with rivets.

[0031] 2) Fill artificial substrates in fish scale pits, and lay a layer of degradable plastic film on the bottom of each fish scale pit. Since the rock drainage field is mainly composed of ore sand, with large pores and poor water holding capacity, the prepared arti...

Embodiment 3

[0035] 1) The slope of the rock drainage field is 20-40°, and fish scale pits are dug from top to bottom on the steep slope of the rock drainage field. The size of the fish scale pits is 0.5m in diameter and 0.4m deep. The line spacing is 1.5m; a 0.5m wide small platform is built at 0.6m below every two rows of fish scale pits, and a runoff ditch with a width of 0.2m and a depth of 0.1m perpendicular to the slope is dug on the small platform at intervals of 5m; A stone embankment with a width of 0.8m is built at the foot of the site slope. It is mainly formed by the surrounding large-scale abandoned ore rocks. The middle is connected with iron wires, and the wire mesh is anchored to the ground with rivets.

[0036] 2) Fill artificial substrates in fish scale pits, and lay a layer of degradable plastic film on the bottom of each fish scale pit. Since the rock drainage field is mainly composed of ore sand, with large pores and poor water holding capacity, the prepared artificial...

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Abstract

Provided is an ecological restoration method of an iron mine steep slope waste rock field in a northern area. The soil ecological restoration method includes the following steps that fish scale pits are dug in a waste rock field steep slope from top to bottom, and a small platform is built under every two rows of fish scale pits; a stone protection dam is built on a slope toe of the steep slope waste rock field; artificial matrixes are buried in the fish scale pits, and the small platforms are covered with the artificial matrixes which are 0.5 m thick; the artificial matrixes are composed of urban sludge, river bottom sediment, corn straw, coal ash, fired coal slag and sawdust; the vegetation plant modes are sequentially arranged as following, the fish scale pits in the slope are in a shrub and grass planting mode, the small platforms are in a shrub, glass and vein planting mode, and the stone protection dam below the slope toe is in an arbor, shrub and grass planting mode. The method can effectively prevent rock steep slope collapse, improve the soil structure of waste land and quickly restore a vegetation ecological system.

Description

technical field [0001] The invention relates to a soil ecological restoration method, in particular to an ecological restoration method for steep slope rock dumps of iron mines in the northern region. Background technique [0002] Mining and dressing activities not only occupy and destroy a large amount of land, but also pollute and destroy surrounding land resources again through dust, potential acid wastewater discharge, surface runoff, landslides, subsidence and other processes within a long period of time after mining and mining. The surrounding environment continues to deteriorate. Once the water and soil in the mining area are polluted and damaged, not only will the treatment be difficult, the cost will be high, the environment will take a long time to restore, and it will even bring a series of social problems. Therefore, the restoration of the ecological environment in mining areas is an indispensable task in the sustainable development of the mining industry and ev...

Claims

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Application Information

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IPC IPC(8): A01G1/00
CPCA01G22/00
Inventor 张鸿龄马国峰
Owner SHENYANG UNIV
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