Study on Ecological Restoration Mode of Ultra Wide Fully-Mechanized Coal Mining in West China Aeolian Sand Area

In order to establish an ecological restoration mode suitable for the large scale high intensity coal mining, a mining area of ultra wide fully-mechanized C oal mining face in Bulianta Minefield in Shendong Mining Area of West China ecological vulnerable Area selected a an study object, a surface ground ecological damag e observation system was established .An analysis was conducted on the ecological damage features and parameters (including surface ground cracks, plants, rhizosph ere environment and others) before the mining operation, during the mining period, after the mining operation and when the strata were in a tendency of stabilization.Th e study had obtained the partitions and closed time of the surface ground crack development, the variation tendency of the surrounding soil water contents, plants and r hizosphere environment.The results showed that the surface ground ecological damages would have a self restoration in tendency under the natural force role.An artific ial guided ecological restoration mode and method with the partition restoration, damage reduction and plant promotion as the key was provided.The application results showed that the method would be favorable to systematically upgrade the ecological restoration efficiency of the large scale high intensity coal mining.