Study Of Damaged Land Suitability Evaluation And Land Reclamation Planning In Coal Mine

Shanxi as the largest province of coal resource, it has been transported outside province, at the same time cause more land damaged and environmental disruption. Along with the mining of coal, the damage of the land and environment due to mining is gradually serious. In order to restore damaged land, it is necessary to reclaim land. The fundamental word for land reclamation is suitability evaluation, it can reasonable plan the direction of land reclamation, effective use land resource, Achieving land resource for sustainable development.This text takes Mengjiayao coal mine in Shanxi province as an example, productively analysis and suitably evaluates damaged land. Through the analysis of land use status, mining damage, topography, soil condition, and other natural factors and social economic factors of mining area. Using GIS software, on above basic data attribute input, graphic overlay analysis and other related operations, we can get the suitability assessment unit project area. According the classification standard of "land suitability, land quality, land limited", establish the mining land reclamation suitability evaluation system. The basic standard takes the land reclamation technical standards (Trial) in1995mediation standard. It can be referenced around the reclaimed land suitable for selection of evaluation factors and indicators to determine the weight of evaluation in typical cases. The evaluation combine with the characteristics of mining area, land natural features and social economic attributes and ecological environment. The evaluation factors selected:topographic slope, soil organic matter, soil thickness, the extent of the damage land in mining area, the total nitrogen in the soil, surface material composition. Select the factor, construct the index system, determine the weight factor, a variety of methods are combined to evaluate, to determine the suitability appropriate level of mining damaged land. it can provide direction and guidance for the land reclamation work. The main damaged land in project area is cultivated land. According to the evaluation, Area of first grade in land that is suitable for agriculture is95.37hm2, for forest is23.72hm2, for grass is85.36hm2.According to the suitability grade classification of damaged land, combined with the regional land use overall planning of land use and agricultural planning, the factor of land natural characteristics and damaged grade, preliminarily determining the direction of the land reclamation. Making reclamation measures based on the different land reclamation direction. Specific measures include filling engineering, land leveling, slope engineering, topsoil stripping, covering soil measures and biological measures. From the actual situation of coal mine, reclaiming the damaged land, the goal of reusing the land resources in coal mine.