Establishment and application of the suitability evaluation model for reclamation of grassland of Xinjiang coal mine

This paper combined with the Xinjiang regional characteristics to establish the suitability evaluation model for reclamation of grassland for Xinjiang coal mine on the basis of reasonable index system of suitability evaluation for land reclamation.Taking 12coal mines in Xinjiang as the research background,the author selected 9 factors such as the slope of land reclamation unit after land destruction,the depth of land destruction or the amount of deposit of land occupancy,the guaranteed rate of soil for land reclamation,the reduced production of land by land destruction,the groundwater depth after land excavation or subsidence,groundwater depth the clay content in the soil,the thickness of topsoil,water for irrigation of mining area,the content of organic matter in soil as analyzing indexes.The suitability evaluation model for land reclamation of coal mines in Xinjiang was established by taking the 55 land reclamation units of 12 coal mines in Xinjiang as the training samples.Every sample was tested by using resubstitution method according,and the correct rate was equal to 98.2%.The evaluation model was applied to Yili No.1 Coal Mine and the evaluation results was ideal.The evaluation model can be widely used in suitability evaluation for land reclamation of coal mine in Xinjiang.