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《Coal Engineering》 2015-10
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Influence of Sand-Bedrock Ratio on Overlying Rock Movement and Damage in Aeolian Sand Area

WANG Chuang-ye;XUE Rui-xiong;ZHANG Xi;Institute of Mining,Inner Mongolia University of Science and Technology;  
The seam deposit features of Bulianta 12407 coal mining face were analyzed and the 3D geological model of the coal mining face was established with FLAC3 D,the movement and damage of overlying rock occurred during coal mining were simulated. The paper analyzed the displacement and stress distribution law of the strata above seam during the coal mining process and discussed the influence of sand- bedrock ratio on overlying rock movement and damage,which could forecast damage extent of the overlying rock in the mined- out area,so that measures could be taken to prevent sand inrush and water inrush in the working face and protect plants on the surface.
【Fund】: 科技部“十二五”国家科技支撑计划项目(2012BAC10B03);; 国家自然科学基金项目(51464036);; 内蒙古自然科学基金项目(2012MS0718);; 内蒙古高等学校科学研究项目(NJZY12105)
【CateGory Index】: TD325
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