Slope soil three-dimensional restoration ecological network for abandoned rare earth mining area and maintenance method thereof

Abstract

The invention discloses a slope soil three-dimensional restoration ecological network for an abandoned rare earth mining area and a maintenance method thereof, and belongs to the technical field of soil ecological restoration of abandoned land of a mine. An ecological network is that corresponding ditches are manually dug in the surface of soil (00); soil fixing devices (10) are fixed to the interiors of the ditches in sequence; the dug soil (00) is backfilled; 3 / 4 of each soil fixing device (10) is ensured to be buried in the soil (00); the soil fixing devices (10) are that horizontal square frames (11) are fixed to the ditches through vertical wooden piles(12); modified biomass charcoal (13), a carbon fibre mesh membrane (14), grass seeds (15) and sawdust (16) are arranged on each horizontal square frame (11) in sequence from bottom to top. The slope soil three-dimensional restoration ecological network for the abandoned rare earth mining area and the maintenance method thereof have an important effect on effectively improving the extremely degraded ecological environment caused by tailing abandon in a rare earth mining area and improving a treatment effect of mining area ecological damage and environmental pollution caused by rare earth mineral mining.

Description

technical field [0001] The invention belongs to the technical field of soil ecological restoration of abandoned mine lands, and in particular relates to a three-dimensional restoration ecological net for slope soil in abandoned rare earth mining areas and a maintenance method thereof. Background technique [0002] Rare earth is called "industrial gold" and is an important material required in high-tech fields. It is listed as a specific mineral and strategic resource for protective mining by the state. According to the white paper "China's Rare Earth Status and Policies" released by the State Council Information Office in 2012, my country's rare earth reserves are about 18.59 million tons, accounting for about 23% of the world's total reserves. It is the world's most abundant rare earth resources and the most complete mineral types. s country. The Jiangxi Gannan region has more than 30% of the country's ionic heavy rare earths. Its prospective reserves are more than 9.4 mill...

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Problems solved by technology

[0005] The purpose of the present invention is to overcome the shortcomings and deficiencies of the existing technology, and to provide a three-dimensional repair ecological network and maintenance method for slope soil in abandoned rare earth mining areas, so as to comprehensively solve soil erosion, soil property restoration and soil pollution control in abandoned rare earth mining areas The problem

[0007] The use of biomass "well" soil-fixing materials can solve the problems of rare earth abandoned mine soil water and soil loss, difficult plant survival and soil pollution control, that is, to provide a method that can reduce soil heavy metals and ammonia nitrogen pollution (combined with biomass charcoal accumulation, adsorption, The principle of secondary absorption and extraction of plants, forming a new idea of ​​"absorption well" system of pollutants into parts); the ecological network used for restoration has the characteristics of stability, durability and environmental friendliness, and is also a waste of crops A New Way of Resource Utilization

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