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Ecological restoration method for geological collapse area

A technology for ecological restoration and subsidence area, which is applied in the fields of land preparation methods, applications, agricultural machinery and equipment, etc. It can solve the problems of undeveloped coal mine subsidence areas, and achieve the effects of improving soil environmental quality, easy operation and implementation, and simple methods.

Inactive Publication Date: 2015-10-07
SUZHOU GOLD MANTIS GREEN LANDSCAPE LIMITED
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, my country's coal mine subsidence area is still in the basic undeveloped stage.

Method used

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  • Ecological restoration method for geological collapse area

Examples

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example 1

[0029] A method for ecological restoration in a geological subsidence area, comprising the steps of:

[0030] Step 1: Fill the subsidence area with coal gangue as backfill, wherein the coal gangue with a particle size greater than 15 mm is filled in the lower layer of the subsidence area, and the coal gangue with a particle size of less than 3 mm is filled in the space near the ground in the subsidence area, and then filled with Bulldozers bulldozed and road rollers compacted to obtain a well-sealed coal gangue layer;

[0031] Step 2: laying a covering layer with a thickness of 0.5m above the gangue layer, wherein the covering layer includes 30wt% sludge, 50wt% coal gangue and 20wt% fly ash;

[0032] Step 3: On the covering soil layer, lay a topsoil layer with a thickness of 0.3m, wherein the topsoil layer includes 40wt% loess, 30wt% fly ash, 28.8wt% sludge, 0.3wt% urea-formaldehyde , 0.5wt% microbial fertilizer and 0.4wt% polyacrylamide, wherein the microbial fertilizer incl...

example 2

[0036] A method for ecological restoration in a geological subsidence area, comprising the steps of:

[0037] Step 1: Fill the subsidence area with coal gangue as backfill, wherein the coal gangue with a particle size greater than 15 mm is filled in the lower layer of the subsidence area, and the coal gangue with a particle size of less than 3 mm is filled in the space near the ground in the subsidence area, and then filled with Bulldozers bulldozed and road rollers compacted to obtain a well-sealed coal gangue layer;

[0038] Step 2: laying a covering layer with a thickness of 1m above the gangue layer, wherein the covering layer includes 60wt% sludge, 30wt% coal gangue and 10wt% fly ash;

[0039]Step 3: laying a topsoil layer with a thickness of 0.5m on the covering soil layer, wherein the topsoil layer includes 60wt% loess, 15wt% fly ash, 23.1wt% sludge, 0.5wt% urea-formaldehyde , 0.8wt% microbial fertilizer and 0.6wt% polyacrylamide, wherein the microbial fertilizer inclu...

example 3

[0043] A method for ecological restoration in a geological subsidence area, comprising the steps of:

[0044] Step 1: Fill the subsidence area with coal gangue as backfill, wherein the coal gangue with a particle size greater than 15 mm is filled in the lower layer of the subsidence area, and the coal gangue with a particle size of less than 3 mm is filled in the space near the ground in the subsidence area, and then filled with Bulldozers bulldozed and road rollers compacted to obtain a well-sealed coal gangue layer;

[0045] Step 2: laying a 0.8m-thick covering soil layer above the coal gangue layer, wherein the covering soil layer includes 40wt% sludge, 50wt% coal gangue and 10wt% fly ash;

[0046] Step 3: On the covering soil layer, lay a topsoil layer with a thickness of 0.4m, wherein the topsoil layer includes 50wt% loess, 20wt% fly ash, 28.5wt% sludge, 0.4wt% urea-formaldehyde , 0.6wt% microbial fertilizer and 0.5wt% polyacrylamide, wherein the microbial fertilizer inc...

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Abstract

The invention provides an ecological restoration method for a geological collapse area. The ecological restoration method comprises the following steps that gangue is employed as fillers to fill into a collapse area and then the area is flattened by a bulldozer; the gangue layer is solidly pressed by a road roller; a soil coating layer is paved on the gangue layer; the soil coating layer is formed by 30 to 60wt% of sludge, 30 to 50wt% of gangue and 10 to 30wt% of coal ash; surface soil layer with thickness of 0.3 to 0.5cm is paved on the soil coating layer; the surface soil layer is formed by loess, coal ash, sludge, ureaformaldehyde, bacterial manure and polyacrylamide with proper proportions; and at last, Chinese pines, Populus davidiana and leguminosae trees are mixedly planted on the surface soil layer. By the use of the method, productivity of reconstructed soil can be restored and enhanced in short time, soil environment quality can be improved and soil ecological system can be restored; and the method is simple and easy to operate.

Description

technical field [0001] The invention relates to a method for ecological restoration of a geological subsidence area. More specifically, the present invention relates to a method with excellent restoration function for the ecological environment of geological subsidence areas, especially coal mine subsidence areas. Background technique [0002] Geological subsidence refers to a geological phenomenon in which the top of surface rocks and caves in the body collapse downwards under the action of man-made or natural geological factors, forming collapse pits, collapse holes, and collapse troughs. Among them, especially the land and ecological environment damage caused by mining, the amount is large and wide, and the situation is becoming more and more serious. The impact of coal mining on the natural environment is mainly manifested in the damage to water resources and surface structures, resulting in surface subsidence and changes in groundwater levels within a certain range. T...

Claims

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Application Information

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IPC IPC(8): A01B79/02
Inventor 张真尹丰臣刘磊薛忠明潘晓华骆飞王卫青刘佳利刘盈
Owner SUZHOU GOLD MANTIS GREEN LANDSCAPE LIMITED
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