Numerical simulation of compound media coupling mechanism of deep mining overburden strata

查看全文 作　　者：YANG Fan, CHEN Shuang School of Geometrics, Liaoning Technical University, Fuxin 123000, China

出　　处：《中国有色金属学会会刊:英文版》索引2011年第21卷第S3期,共6页

基　　金：Project(504006009)supported by the National Natural Science Foundation of China;Project(2007-09)supported by Open Research Project of State Key Laboratory of Coal Resources & Safe Mining(CUMTB)of China;Project(2010921099)supported by Liaoning Baiqianwan Talents Program 摘　　要：Aiming at the regularity of deep mining strata movement, through the application of plate theory and discrete medium theory in establishing the coupling model of the deep mining strata composite medium, the continuum media and the non-continuum media were coupled into the compound media giant system, and the stress of compound layer and strain coupling relationship were established. The accuracy of forecasting surface subsidence in deep mining conditions was improved. The deep mining was simulated through 3-D numerical value by the FLAC3D finite difference software, and the coupling relationship and coupling layer in the strata composite layer were analyzed. The results show that, under the deep mining condition, the coupling zone is in the position of coal seam roof with the thickness of 15-20 times, on which, the stress-strain has much difference on the coupling zone. Considering interlayer effect of coupling zone can improve the prediction precision of surface subsidence. 关键词：deep MINING NUMERICAL simulation coupling mechanism

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Numerical simulation of compound media coupling mechanism of deep mining overburden strata

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