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《Chinese Journal of Underground Space and Engineering》 2013-01
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Numerical Simulation Analysis of Overlying Rock Movement Factors Based on Orthogonal Experiment Design

Huang Zhen,Zhu Shuyun,Jiang Zhenquan,Sun Qiang,Zhang Rui(School of Resources and Earth Science,China University of Mining and Technology,Xuzhou, Jiangsu 221116,China)  
Based on the condition of the main mining coal seam of Yanzhou,and aiming at exploring the effect of the main factors on the overlying rock movement of goaf,and making a reference for mining and protection of surface buildings,four factors,namely the mining thickness,mining depth,mining width and properties of overlying rock,were selected to analyze their sensitivity using the orthogonal experiment design and the numerical simulation program FLAC3D.The results show that the sensitivity of factors is of great difference,and the mining width has the greatest sensitivity to the overlying rock movement,and the mining thickness and properties of overlying rock have the greater sensitivity than mining depth.A mathematical formula of overlying rock movement,which considers several factors,is obtained by regression analysis and the result is excellent.
【Fund】: 中国矿业大学青年科研基金(2009A029);; 国家自然科学基金项目(No.41102201)
【CateGory Index】: TD821
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