An investigation of surface deformation after fully mechanized,solid back fill mining

查看全文 作　　者：Li [1]Jian;Zhang [1]Jixiong;Huang [1]Yanli;Zhang [1]Qiang;Xu [1]Junming

机构地区：[1]School of Mines.China University of Mining&Technology,Xuzhou 221008,ChinaState Key Laboratory of Coal Resources and Mine Safety,Xuzhou 221008,China

出　　处：《International Journal of Mining Science and Technology》索引2012年第22卷第4期,共5页

基　　金：provided by the National Natural Science Foundation of China (Nos. 51074165 and 50834004) 摘　　要：The surface deformation after fully mechanized back filling mining was analyzed.The surface deformation for different backfill materials was predicted by an equivalent mining height model and numerical simulations.The results suggest that:(1) As the elastic modulus,E,of the backfill material increases the surface subsidence decreases.The rate of subsidence decrease drops after E is larger than 5 GPa;(2) Fully mechanized back fill mining technology can effectively control surface deformation.The resulting surface deformation is within the specification grade I,which means surface maintenance is not needed.A site survey showed that the equivalent mining height model is capable of predicting and analyzing surface deformation and that the model is conservative enough for engineering safety.Finally,the significance of establishing a complete error correction system based on error analysis and correction is discussed. 关键词：地表变形充填采矿表面变形固体高程模型模拟预测回填材料弹性模量

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An investigation of surface deformation after fully mechanized,solid back fill mining

参考文献(20)

引证文献(24)

耦合文献(1024)

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