Numerical simulation of compound media coupling mechanism of deep mining overburden strata
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.
deep mining numerical simulation coupling mechanism
YANG Fan CHEN Shuang
School of Geometries, Liaoning Technical University, Fuxin 123000, China
国际会议
河南焦作
英文
631-636
2011-06-18（万方平台首次上网日期，不代表论文的发表时间）