Technique for safe improvement as well as ecological repair and reconstruction of mine soil discharge yard

Abstract

The invention discloses a technique for safe improvement as well as ecological repair and reconstruction of a mine soil discharge yard. The technique is implemented according to the following processes and steps: carrying out comprehensive optimization according to experience, calculation and land use properties to determine slope, slope length and flat pan width of the soil discharge yard, and designing slope cutting grade of an accumulation side slope of the soil discharge yard into three grades, wherein the height of each grade of slope is 9-11 m, the flat pan width of the side slope is 4-8 m, and the slope ratio is as follows: the first grade is 1:(2.0-2.1), the second grade is 1:(1.7-1.8) and the third grade is 1:(1.45-1.60); preparing the flat pan into a horizontal, slope or reverse slope type; and constructing the first-grade and second-grade side slopes by adopting grass planting in stone masonry arch rack, slope bottom apron protection, and designing mortar flag stone side slope flat pan and water discharge channel of the flat pan as well as slope edging, constructing the third-grade side slope by a vetiver grass slope protection greening technique, firstly sowing Bahia grass in the flat pan of the soil discharge yard with the seed amount of 15-25 g/m<2>, after sowing, maintaining and managing in time, checking seedlings and supplementing deficient seedlings, harvesting 1-2 times every year and maintaining seedling height of 20-30 cm when most stem tillers enter fringe-bearing flourishing growth stage, and planting fruit trees or crops in the flat pan after 1-2 years. In the technique disclosed by the invention, engineering measure and biological measure are comprehensively adopted to ensure the safety of the mine soil discharge yard and achieve good ecological repair effect and landscape effect; and plants adaptable to local conditions are planted and the cost is lower.

Description

technical field [0001] The invention relates to an ecological restoration technology of mine waste land, in particular to a method and measure for regulating and restoring the ecology of a mine dump. Background technique [0002] The development of mineral resources has caused a large number of ecological and environmental problems. The environmental problems, safety problems, and occupation of cultivated land and forest land caused by the large amount of abandoned land generated by mine development have always been widely concerned and valued by the international community. As early as the 1950s, the ecological and environmental problems caused by mining have attracted the attention of developed countries. Countries have successively implemented strict mining land reclamation and ecological environment protection systems, and promptly restored the damaged ecological environment of mining areas. As the global environment, land, resources and population issues become more and...

AI Technical Summary

Problems solved by technology

[0007] At present, the relatively large waste dump ecological restoration technology, the traditional method is that the slope is completely planted with grass on the masonry arch, mainly based on engineering measures, and the grass sp

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