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Ecological restoration method for construction refuse landfill

A construction waste and ecological restoration technology, applied in filling, construction, excavation, etc., can solve problems such as landslides or debris flow disasters, and the decline in the supporting capacity of the underlying structure of construction waste landfills, so as to reduce the impact and speed up internal ecological restoration. , keep dry effect

Active Publication Date: 2016-09-07
谢铁冬
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Construction waste contains a lot of sand and loose soil, and there is a hidden danger of landslides or mudslides if it is buried randomly
For example, in the Shenzhen landslide incident in 2015, after the buried construction waste was stored for a long time, groundwater seeped into the bottom of the landfill, and at the same time, rainwater from the top of the landfill flowed into the piled construction waste from the top. The soil continuously absorbs rainwater and groundwater, and finally turns into mud, which leads to the decline of the structural support capacity of the bottom layer of the construction waste landfill, directly causing landslides

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] A method for ecological restoration of a construction waste landfill, comprising the following steps: A, selecting a site with a high slope in the middle and low periphery as the landfill site; B, building a rainwater drainage ditch on the top of the high slope to divert the rainwater to the landfill site Outside; C, filling construction waste into the landfill site to form a construction waste layer, laying a layer of composite non-woven fabric layer on the upper surface of the construction waste layer after every filling of H meter thick construction waste, and then continue to fill in the building Garbage, reciprocatingly fill in construction waste until the filling is completed; D. After the construction waste is filled, lay a soil layer on the upper surface of the uppermost layer of construction waste; E. Plant vegetation in the soil layer and set it on the edge of the soil layer Drainage channels divert stormwater away from the landfill site.

[0018] When the hig...

Embodiment 2

[0024] The difference between this embodiment and embodiment 1 is:

[0025] The composite non-woven fabric layer is composed of non-woven fabric and high-strength glass fiber net arranged on the surface of the non-woven fabric.

[0026] The size of H in the step C is 1.2.

[0027] The soil of the soil layer is composed of the following raw materials in parts by weight: 110 parts of natural soil, 22 parts of biogas residue, 25 parts of coal cinder, 6 parts of grass ash or wood ash, and 1.5 parts of compound fertilizer.

[0028] The plants planted in the step E are redbud trees, casuarinas, vetiver and Bermuda grass, and the redbud trees, casuarinas and vetiver are planted equidistantly, and the distance between two adjacent redbud trees is 3.5 m, the distance between two adjacent casuarinas is 2.2m, the distance between two adjacent bunches of vetiver is 0.8m, and the space after planting redbud trees, casuarinas and vetiver is planted with Bermuda grass turf.

Embodiment 3

[0030] The difference between this embodiment and embodiment 1 is:

[0031] The composite non-woven fabric layer is composed of non-woven fabric and high-strength glass fiber net arranged on the surface of the non-woven fabric.

[0032] The size of H in the step C is 1.3.

[0033] The soil of the soil layer is composed of the following raw materials in parts by weight: 130 parts of natural soil, 25 parts of biogas residue, 30 parts of cinder, 7 parts of grass ash or wood ash, and 2 parts of compound fertilizer.

[0034] The plants planted in the step E are redbud trees, casuarinas, vetiver and Bermuda grass, and the redbud trees, casuarinas and vetiver are planted equidistantly, and the distance between two adjacent redbud trees is 4m , the distance between two adjacent casuarinas is 2.5m, the distance between two adjacent bunches of vetiver is 0.9m, and the space after planting redbud trees, casuarinas and vetiver is planted with Bermuda grass turf.

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Abstract

The invention relates to the technical field of landfill, in particular to an ecological restoration method for a construction refuse landfill. The ecological restoration method comprises the steps of A, selecting the landfill; B, constructing a rainwater drainage ditch in the top of a high slope; C, filling the landfill with construction refuse for forming a construction refuse layer, laying a composite non-woven fabric layer on the upper surface of the construction refuse layer after construction refuse with the thickness reaching H meters is accumulated, continuously filling the landfill with the construction refuse and repeating the operation of filling the landfill with the construction refuse until filling-in is completed; D, laying a soil layer on the upper surface of the construction refuse layer at the top layer after filling-in of the construction refuse is completed; and E, planting plants on the soil layer and arranging a drainage ditch in the edge of the soil layer for draining rainwater out of the landfill. According to the ecological restoration method, landfill of the construction refuse can be completed well, the hidden danger of landslides or debris flow is avoided, and the surface of the construction refuse landfill can be ecologically restored and is prevented from being damaged.

Description

technical field [0001] The invention relates to the technical field of garbage landfills, in particular to an ecological restoration method for construction waste landfills. Background technique [0002] With the further development of China's economy, the progress of China's urbanization has been further accelerated. However, in the process of rapid urbanization, a large amount of construction waste has been generated. How to properly deal with construction waste has become one of the problems in today's society. . Construction waste contains a large amount of sand and loose soil, and there are hidden dangers of landslides or mudslides if they are buried randomly. For example, in the Shenzhen landslide incident in 2015, after the buried construction waste was stored for a long time, groundwater seeped into the bottom of the landfill, and at the same time, rainwater from the top of the landfill flowed into the piled construction waste from the top. The soil continuously ab...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D17/20E02D17/18E02D19/00
CPCE02D17/18E02D17/20E02D19/00
Inventor 谢铁冬
Owner 谢铁冬
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