Greening substrate of quarry waste muck as well as preparation method and application of greening substrate

Abstract

The invention discloses a greening substrate of quarry waste muck as well as a preparation method and application of the greening substrate. The method comprises the following steps of: selecting the quarry waste muck, artificially sieving with a sieve of 2cm (to remove impurities such as weed), and artificially crushing corn straws to 1-2cm; sealing at a high temperature, and decomposing; proportioning in parts by mass: 40 to 60 parts of muck, 30 to 40 parts of sewage sludge, 10 to 20 parts of straws, 50 to 100g / m<2> of sheep dung, 2 to 6g / m<2> of water holding agent and 15 to 45g / m<2> of bacillus licheniformis fertilizer; and mixing uniformly at normal temperature to obtain the greening substrate. The vegetation substrate or a soil improvement material and a formula can be produced on site, waste soil quantity is reduced, the cost is reduced, and land and vegetation resources are protected; and the greening substrate can be applied to integral greening, local soil dressing greening and bagged greening in semi-humid regions of north China and construction project active regions with seasonal drought, centralized and large rainfall.

Description

technical field [0001] The invention relates to the field of mine ecological environment management, in particular to a greening matrix of waste slag in a quarry and 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, the development of mining and other industries, and the excessive and illegal mining of mining areas. There are various forms of quarry damage and hazards, 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, blocking the river, and aggravating soi...

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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 slag is not classified, it is directly piled up at random. The particle size of the waste slag in the waste slag pile is different, and the difference is large. At the same time, huge pores are formed under the ground, which causes serious leakage of surface water and causes Terrain arrangement is difficult

Moreover, the waste residue 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, the soil is directly covered for greening. Due to the high cost of soil and the long transportation distance, the cost of vegetation restoration is high. Conventional afforestation fails to achieve the purpose of sustainable vegetation restoration, resulting in a low survival rate of seedlings.

There are also many studies on the ratio of substrates, such as artificial soil, thick-layer substrate type and vegetation concrete formula, rock ecological restoration substrate, high and steep slope ecological slope protection substrate, sludge spraying greening substrate, coal gangue pulverization The emergence of products such as spraying greening matrix, greening matrix for rocky slope ecological protection, and greening matrix for sandstone rocky slope, but there are still many problems in practical application, for example, the formula of the matrix is ​​similar, and the regional limitations are large, which affects the restoration of vegetation. Effect

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