Wang Yi-ming, Wu Ai-xiang, Chen Xue-song, J Yang Bao-hua, Su Yong-ding. New mining technique with big panels and stopes in deep mine[J]. Transactions of Nonferrous Metals Society of China, 2008,18 : 183-189(SCI,EI).
Abstract: For the purpose to suit the bad mining technical conditions, such as deep imbed, gentle dip angle, and high initial stress in Dongguashan deposit, the stoping scheme was optimized. The new mining technique, with temporary curtain walls, large panels and stopes, was achieved as well. The deposit model, which was built through the DATAMINE, was led into FLAC(3D) for numerical simulation. Based on these, the stabilities of pillars and stopes were analyzed. On the other hand, the impact of output stability by new scheme was verified with the help of optimization planning theory. The results show that slopes and curtain walls are safe when the width of temporary curtain walls between panels are 18 in. The length and width of stope increase to 78 in (82 m) and 18 in respectively, and those of panel increase to 300-500 in and 100 in respectively. The commercial test indicates that the new scheme can attain the aims of simpler production organization, better stope ventilation and work condition, smaller quantities of development and cutting, and 2/3 of equipments as before with the stable output. The pillar stoping technique is credible and valuable.