Iron ore waste-rock yard land rehabilitation integral regulation method

Abstract

The invention discloses an iron ore waste-rock yard land rehabilitation integral regulation method comprising the following steps: cleaning large size rocks and foreign materials on the waste-rock yard land surface, keeping original roads and public & auxiliary facilities, and leveling the waste-rock yard land and slopes and rolling out; keeping and reconstructing original draining systems according to plans, and newly constructing water supply and power supply facilities; building a retaining wall, an apron wall, a waterway, and / or catch water drain on a slope with easy water and soil floating; covering an iron ore open pit mining erosive rehabilitation pile-up topsoil layer with a thickness of at least 40cm on a compacted platform and a slope, leveling and naturally depositing the soil;building a sprinkling facility on a platform, and covering a humus soil of at least 5cm on a planting soil surface layer, and planting city greening normal tree species; digging planting pits with theline spacing of at least 1.5m*1.5m on other platforms and smooth slopes, setting an impervious layer on the bottom, refilling the rehabilitation pile-up topsoil, and finally planting fast-growing forest trees. The iron ore waste-rock yard land rehabilitation integral regulation method is low in rehabilitation cost, high in land treatment rate, and stable in post-rehabilitation geology, and has sustainable benefits.

Description

technical field [0001] The invention belongs to the technical field of land reclamation, and in particular relates to a land reclamation comprehensive treatment method for iron ore waste rock yards with low reclamation cost, high land treatment rate, stable geology after reclamation, and sustainable benefits. Background technique [0002] While the development of mineral resources has made an important contribution to the development of the national economy, the tailings, waste rock piles, and waste residues left during the mining process and after mining not only cause a large number of abandoned land around the mining area and serious damage to soil, groundwater, and ground surface. Water and air pollution lead to serious damage to the surrounding ecological environment, and directly or indirectly endanger the health of the surrounding population through various means. At present, in iron ore mining and dressing areas, waste rock dumps and tailings ponds are the largest an...

AI Technical Summary

Problems solved by technology

Although this kind of scheme is simple in planning, convenient in construction and high in reclamation rate, the cost of rebuilding after demolition is not only high, but also the construction waste after demolition will cause environmental pollution

In addition, in the prior art, after the land reclamation of the waste rock site, landscaping or ordinary greening is generally carried out, and comprehensive renovation is not carried out. As a result, it is not only necessary to continue to support the cost of greening and maintenance, but it is also difficult to generate direct economic benefits, which seriously restricts mining enterprises. Activeness in Land Reclamation of Waste Rock Sites