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ANALYSIS OF RECLAMATION CONDITIONS OF FILLING OF COAL GANGUES IN MINING DEPRESSION AREA IN THE HAIZI COALMINE IN HUAIBEI

LI Dong;YAN Jia-ping;XU Liang-ji;YU Huai-jun;DONG Xiang-lin;School of Earth & Environment,Anhui University of Science and Technology;School of Surveying and Mapping,Anhui University of Science and Technology;Huaibei Mining Group Co.Ltd.;  
In order to increase farmland resources in the depression area,effectively improve land use rate,and reduce environmental pollution,this paper analyzed reclamation conditions by filling of coal gangues in the area based on a site survey and lab test.Analytical result indicated that the landform conditions in the depression area are favorable to implementation of land reclamation program,higher groundwater level can provide adequate water for reorganization of soil;shallow depth of depression and majority of the area in a state of stable depression are helpful to filling with coal gangues for reclamation;massive coal gangues lay a solid material basis for the work,low content of harmful elements in the gangues would not cause remarkable pollution to groundwater and soil after reclamation,and the size and composition of gangues are good to retaining and moving-up of water.
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