Coal gangue pulverizing article ecological recovery greening substrate and method of use thereof

Abstract

The present invention discloses an ecology recovering greening substrate of coal gangue crushing material. The coal gangue crushing material is mainly used as substrate, wherein the volume ratio of soil in the compound of coal and coal gangue is 10%-95%, and the volume of coal gangue is 5%-90%. The using of waste of coal gangue can effectively improve the environment of waste mine, reduces the environment pollution and saves the cost for recovering ecology. The mixture of soil and coal gangue is also mixed with water-loss reducer. The application method of the invention is using the mixture of soil and coal gangue crushing material to the recovering and cultivation of herb or shrub for greening the coal gangue mine.

Description

technical field [0001] The invention relates to an ecological restoration matrix of a mining abandoned land, in particular to an ecological restoration greening matrix of pulverized coal gangue. Background technique [0002] Environment and development are major issues that the international community is generally concerned about, and a series of ecological, social and economic issues caused by the development and utilization of mineral resources, an important means that human production activities and economic growth depend on, are environment and development issues. one of the focal issues. [0003] According to statistics in 2008, there are more than 8,000 state-owned mining enterprises and more than 230,000 individual mining enterprises in my country. The destruction of the land and the environment by a huge amount of mining is quite astonishing. However, the land reclamation rate is only 2%, which seriously damages the land resources and ecological environment. Among...

AI Technical Summary

Problems solved by technology

[0007] 1) Extensive excavation results in poor soil physical properties, lack of fertilizer, water, and low content of nitrogen, phosphorus and organic matter in mining wasteland

At the same time, the land is barren and the vegetation is degraded, which eventually leads to the formation of a large area of ​​artificial bare land in the mining area, which is easily washed by rainwater and aggravates the formation of soil erosion.

[0008] 2) The excavation of the ground and slope affects the stability of the mountain and slope, often leading to frequent ground subsidence, cracking, collapse and landslides

[0009] 3) The "three wastes" in the mining area are seriously polluted

[0010] 4) Heavy metal pollution is serious

There are generally heavy metal pollution problems in mining wastelands. Although some experiments have shown that a very small amount of heavy metals is beneficial to the rooting of certain plants, a slightly larger amount of copper, lead, zinc, etc. can completely prevent plant growth.

[0011] 5) Vegetation damage is serious