Mine restoration greening method

Abstract

The invention relates to the field of ecological restoration, and particularly discloses a mine restoration greening method which comprises the following steps that leveling is conducted; heavy metal treatment is conducted, specifically, a heavy metal treatment agent is spread on the leveled land, the land is turned, the heavy metal treatment agent is turned into the mining area soil, and the heavy metal treatment agent is obtained by mixing the following raw materials in parts by weight: calcium bentonite, silicon dioxide, monosaccharide, hydroxyethyl cellulose and cement; hydration is conducted, and water is sprinkled for irrigation or standing and curing are conducted after raining; clay is paved, and a clay layer is paved after standing and curing; a soil planting matrix is laid, specifically, the soil planting matrix is laid on the clay layer, and the soil planting matrix is obtained by mixing the following raw materials in parts by weight: a water-retaining agent, an organic fertilizer, an inorganic fertilizer, soil and bentonite; and planting and greening are conducted, and green plants are planted on the soil planting matrix. According to the method, the environment more beneficial to vegetation growth can be created, vegetation growth is better, the survival rate is higher, mine greening is facilitated, and ecological reconstruction of the mine is accelerated.

Description

technical field [0001] This application relates to the technical field of ecological restoration, more specifically, it relates to a mine restoration and greening method. Background technique [0002] The development and utilization of mine mineral resources has effectively promoted the development of national and local economies and societies, but the mining of mines will also cause serious damage to the environment near the mines, especially if there is no vegetation in the mines after mining, resulting in soil and water pollution. Therefore, how to green mines and prevent soil erosion has become an urgent problem to be solved. The primary problem to solve the above problems is to solve the basic conditions for the survival of plants. The problem of vegetation growth in mines after mining is largely due to the fact that the key to ecological damage caused by mining is land degradation, that is, changes in soil factors. That is, the physical and chemical properties of aban...

AI Technical Summary

Problems solved by technology

This method mainly has the following problems: Due to the limitation of the water and fertilizer retention performance of the soil matrix on the surface of the mine soil, under the environmental conditions of drought or high rainfall, the water and nutrients of the soil are easy to lose, resulting in the growth of vegetation being inhibited or even dead. , In addition, even if the soil is improved to produce the elements needed for plant growth, it is found that the plant growth is still poor and easy to die. After research, it is found that the soil contains more heavy metal ions. Mining solid waste has been accumulated for a long time under the effects of weathering and rainwater leaching. Trace heavy metal elements in the solid waste migrate and enter the surrounding soil, resulting in an increase in the content of heavy metals in the soil. These toxic heavy metal elements are not easy to be degraded by soil organisms. Gradually accumulate in the soil, leading to soil pollution, and excessive heavy metals in the soil are not good for plant growth. For example, although Cu in the soil is an essential nutrient element for plants, excessive Cu has obvious toxic effects on plants and can also inhibit the growth of plants. Physiological metabolism makes the roots of plants seriously damaged, the main roots cannot be elongated, the growth is poor, and they are easy to die. These will affect the final growth of plants, which will ultimately affect the effect of mine restoration and greening

Images