A method for comprehensive land reclamation of iron ore waste rock yard

Abstract

The invention discloses a land reclamation comprehensive treatment method for an iron ore waste rock field, which includes cleaning up large-sized stones and sundries on the waste rock field surface, retaining original roads and public auxiliary facilities, and leveling the waste rock field site and side slopes and flatten; retain and renovate the original drainage system and build new water supply and power supply facilities according to the plan; set retaining walls, toe walls, drainage ditches and / or intercepting ditches on slopes prone to water and soil flow; The platform and side slope of the platform shall be covered with at least 40cm-thick reclaimed topsoil stripped from open-pit mining of iron ore, and it will naturally settle down after leveling; sprinkler irrigation facilities shall be built on the platform, and the surface layer of cultivated soil shall be covered with humus soil of at least 5cm to plant urban greening Commonly used tree species; excavate tree planting pits with a row spacing of at least 1.5m×1.5m on the remaining platforms and gentle slopes, set an anti-seepage layer at the bottom, backfill and reclaim topsoil, and finally plant fast-growing trees. The invention has the characteristics of low reclamation cost, high land treatment rate, geological stability after reclamation and 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