Afforesting matrix for improving stone-pit waste muck and preparation method and application of afforesting matrix

A technology of waste dregs and greening substrates, applied in the field of mine ecological environment management, can solve the problems of high cost of vegetation restoration, drought, endangering human survival and health, increase the supply of effective nutrients in dregs, and realize waste recycling Effects of Utilization and Protection of Land and Vegetation Resources

Active Publication Date: 2013-12-25
BEIJING FORESTRY UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At the same time, the dregs and soil wastes in abandoned land formed by mining have many extreme properties, mainly manifested as poor physical structure, barrenness, extreme pH value, high heavy metal content, drought, etc. As well as the landscape of mining areas, etc. have had a huge impact, and at the same time endanger human survival and health, and affect the sustainable development of regional economy
[0003] Since most of the waste muck is not classified, it is directly stacked in the form of random piles. The particle size of the waste muck in the waste muck pile is different, and the difference is large. At the same time, huge pores are formed under the ground, which causes serious seepage of surface water Leakage, resulting in great difficulty in terrain finishing
Moreover, the waste muck is composed of different layers of debris particles, lacks nutrients, has poor water retention capacity, and is more difficult to restore vegetation.
[0004] In the prior art, d

Method used

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  • Afforesting matrix for improving stone-pit waste muck and preparation method and application of afforesting matrix

Examples

Experimental program
Comparison scheme
Effect test

experiment example 1

[0046] The additives selected in the present invention are quarry waste slag, fly ash, mineralized garbage and sewage sludge. The invention selects 2 kinds of herbs and 8 kinds of shrub plants for experiments, 2 kinds of herbs: tall fescue, ryegrass; 8 kinds of shrubs: purple leaf barberry, Euonymus euonymus, pearl plum, crape myrtle, forsythia, sumac, Chinese pine, torch Tree. The characteristics of each additive are as follows:

[0047] The abandoned slag in the quarry of the present invention is the residual material after mining in the quarry, which is manually or mechanically passed through a sieve with an aperture of 20 mm to remove the weed material;

[0048] The fly ash is taken from Beijing Changping District Cement Plant, which is the powdery residue carried out in the flue gas and the bottom slag removed from the bottom of the boiler when the boiler is burning;

[0049] The mineralized waste is taken from the landfill in Beitiantang Village, Beijing, and is old wa...

Embodiment 2

[0078] Example 2 Experimental Demonstration Project of Huangyuan Village, Zhoukoudian Town, Fangshan District, Beijing

[0079] The waste residue slope and platform of Huangyuan quarry in Zhoukoudian Town, Fangshan District are formed by the natural accumulation of discarded loose deposits left by quarrying. The slope is between 30° and 40°, and the application area is 10,000m2. The construction season is June to July.

[0080] The test was carried out in mid-April 2011, and the test was carried out in conjunction with the ecological restoration project of the abandoned mine. The site conditions of abandoned mines are extremely poor, and the soil layer is extremely thin or even non-existent. Soil improvement technology is mainly used for greening and planting. The composition of the greening substrate for improving the dregs in this test is: waste quarry muck: fly ash: mineralized garbage: sewage sludge = 75:10:10:5, mix the garbage humus with the purchased greening soil Plan...

Embodiment 3

[0082] Embodiment 3 Demonstration project of the second phase construction project of Yunhu Resort

[0083] The test demonstration was carried out in early April 2011, and the location was located in Yunhu Resort, and the test was carried out in conjunction with the second phase construction project of Yunhu Resort. This project is a natural landscaping design, all plants are planted in an irregular and natural distribution, and the planting locations are scattered. The plant varieties selected for the experiment mainly include ryegrass and tall fescue. The composition of the greening substrate selected for the test is: waste residue: fly ash: mineralized waste: sewage sludge = 75:5:15:5.

[0084] Effect: After half a year of construction, the plant survival rate is over 95%. After a year of natural rainfall and artificial watering, the planting matrix layer has good overall stability. It not only makes full use of the waste dregs and urban solid waste generated during the c...

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Abstract

The invention discloses an afforesting matrix for improving stone-pit waste muck and a preparation method and application of the afforesting matrix. The preparation method includes selecting the stone-pit waste muck, manually or mechanically screening the waste muck by a screen with the bore diameter of 20mm, removing impurities like weeds, matching, by dry weight, 75 parts of the stone-pit waste muck, 5-10 parts of coal ash, 10-15 parts of mineralized waste and 5 parts of sewage mud, and uniformly mixing under normal temperature. Vegetation matrixes or soil improving materials and formulas can be produced on site, waste muck and waste soil quantity can be reduced, cost can be lowered, and land and vegetation resources can be protected. The afforesting matrix can be applied to overall afforestation, local borrowed-soil afforestation and bagged afforestation in semi-humid areas in north China and seasonally-dry and concentrated-rainfall areas where large building projects are carried out.

Description

technical field [0001] The invention relates to the field of mine ecological environment management, in particular to a greening substrate for improving waste slag in quarries, a preparation method and application thereof. Background technique [0002] At present, the rapid increase in the demand for mineral resources in economic development, the accelerated development of modern cities, and the accelerated popularization of urbanization at the county and township levels have led to the emergence of a series of construction projects, and the development of mining and other industries continues to emerge. Excessive and illegal mining in mining areas, Various forms of damage and hazards are caused in the quarry, especially open-pit mining, which has caused serious ecological and environmental problems in the mining area: seriously affecting the natural landscape, the phenomenon of landscape fragmentation is very serious, destroying the original soil surface and vegetation, bloc...

Claims

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Application Information

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IPC IPC(8): A01G31/00
Inventor 郭小平张平赵廷宁王玮璐汪明勇
Owner BEIJING FORESTRY UNIVERSITY
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