Application of RFPA2D in Sublevel Caving Mining Extra-thick Coal Seams
On the basis of suitable arrangement for the special stress surrounding and parameters selection, Realistic Failure Process Analysis 2-D (RFPA2D) numerical simulation of extra-thick coal seams displacement and failure is carried out. Its proved that the numerical simulation results are consistent with the in-sit measurement results of top coals advance supporting stress and deep-hole displacement. So application of RFPA2D in sub-level caving mining extra-thick coal seams is reliable. Its also proved that application of RFPA2D in sub-level caving mining can do great help to study the nature of top coals displacement, fragmentation and failure process of extra-thick coal seams. As the top coals displacement and failure situation under certain circumstance can be forecasted by RFPA2D numerical simulation, the most suitable top coal thickness under certain circumstance can be predicted by RFPA2D numerical simulation test, which can do great benefit to extra-thick coal seams safe and high efficient mining.
numerical simulation test stress surrounding parameters’ selection failure of top coal extra-thick coal seams
Hua NAN Tao XU Zhidong WEI
School of Energy Science and Technology, Henan Polytechnic University，Jiaozuo 454000 China Research Center for Numerical Tests on Material Failure, Dalian University，Dalian 116622 China
国际会议
郑州
英文
2007-10-23（万方平台首次上网日期，不代表论文的发表时间）